× Didn't find what you were looking for? Ask a question
  
  
Top Posters
Since Sunday
22
22
19
18
18
17
17
16
16
16
16
16
You look like an expert
Quickly gain a reputation by helping other students with their questions. When students see your nickname, they'll immediately associate your answer with credibility and expertise. Also, earn credits for sharing your knowledge and redeem them for rewards.
I am good at  
Tyrosine kinase and blood pressure regulation
Tyrosine kinase and blood pressure regulation
I am having trouble answering this question for my physiology homework:

Using cell culture models, how would one determine the role of tyrosine kinases on blood pressure regulation?

And what are some of the possible limits to this study?


Thanks!
Genetics and Developmental Biology   jessicawcu   405   Asked 3 years ago
Let's say we read this to a Sasha: "Brooks is faster than Darren, and Darren is
Let's say we read this to a Sasha: "Brooks is faster than Darren, and Darren is
Let's say we read this to a Sasha: "Brooks is faster than Darren, and Darren is faster than Chad.  Who is faster, Brooks or Chad?"  If Sasha guesses at the answer or responds. "I can't tell," she is likely in the
Genetics and Developmental Biology   ChelsLou   605   Asked 3 years ago
Are the blue blood vessels in the umbilical word labelled correctly?
Are the blue blood vessels in the umbilical word labelled correctly?
Please explain why it is labelled correctly or not,
Thank you so much.
Genetics and Developmental Biology   Thehobbitlass   1481   Asked 3 years ago
Fruit Fly genetics: WILD MALE x BROWN EYE DUMPY WING female
Fruit Fly genetics: WILD MALE x BROWN EYE DUMPY WING female
Question pertains to Pearson biologylabsonline homework.
Assignment is to cross a wild male X brown eye, dumpy wing female.
The F1 results were as follows:
100% wild F1 phenotype, autosomal results.

Backcrossed a F1 male to a P1 female.
F2 Results were:
1:1 ratio of wild phenotypes to brown eye, dumpy wing. There were no flys showing wild eyes, du
Genetics and Developmental Biology   Jedi_Knight   1240   Asked 3 years ago
Frequency of gametes and phenotypes from genetic map
Frequency of gametes and phenotypes from genetic map
Consider the genetic map below of loci a-g, where the distance between loci are indicated in map units.
a-5-b-20-c-10-d-2-e-25-f-1-g
a) Calculate the frequency of ac gametes from an Ac/aC genotype.
b) BcE from bce/BCE
c) bFG from bfg/BFG
d) the frequency of BCD/Bcd from bCd/BcD x BCd/BcD
e) the frequency of aBcDeFg/aBcDeFg progeny from a mating of
Genetics and Developmental Biology   thesurgeon   1505   Asked 3 years ago
What happens if region 1-100 is removed from the Gal4p sequence?
What happens if region 1-100 is removed from the Gal4p sequence?
Can someone verify the validity of my statements? (This topic is extremely confusing to me)

A) What happens if region 1-100 is removed from the Gal4p sequence?
Gal4p is a protein encoded by the GAL4 gene and the entire protein consists of a total of 881 amino acids. Section 1-98 of the entire Gal4 protein is called the “DNA binding domain.” In order for transc
Genetics and Developmental Biology   Rahpoo   2264   Asked 3 years ago
Few questions on hybrids and genetics
Few questions on hybrids and genetics
Thank you for reading. So I have a basic understanding of Mendel's works, but I am trying to figure genetics out better. Please if you could help, because I can't find the data anywhere on the internet on these questions.

If you take an F1 hybrid and cross it to a p1 (seperate from the hybrid's two different parent types) would you get a new F1 hybrid, or F
Genetics and Developmental Biology   Howlinghawk   3279   Asked 3 years ago
F1 versus F2 generation confusion (Genetics)
F1 versus F2 generation confusion (Genetics)
I am in serious need of correction or confirmation please! I am going to throw out some random facts and please let me know if I am accurate or not. Thanks for helping!

F1 hybrid can only be created by using two separate parents from inbred lines or P1. F1 are uniform, showing a new phenotype without variation. Not even once in a while will you see a second phenotype show
Genetics and Developmental Biology   Howlinghawk   3523   Asked 3 years ago
The likelihood of having identical children (who are not twins)
The likelihood of having identical children (who are not twins)
So I figure if you have enough babies (probably in the billions) you'd eventually get one that was essentially  genetically and/or aesthetically identical to another. Could anyone give me any background information and numbers regarding the likelihood of this?
Genetics and Developmental Biology   DarwinGoodell   421   Asked 3 years ago
Gene map and arrangement with linkage
Gene map and arrangement with linkage
Please help me answer this question.
AaBbCc x aabbcc test cross with ABC linked and dominant. 2000 phenotypes observed with the following individuals counted out of 2000. establish the gene arrangement and map distances.
Genetics and Developmental Biology   ehd123   374   Asked 3 years ago
How many possible alleles are at a locus consisting of 3 base-pairs in a diploid
How many possible alleles are at a locus consisting of 3 base-pairs in a diploid
ugh, I am so confused...

So, I guess a locus is just a spot for a gene, so the gene is also considered to consist of 3 bases?
Gene: _ _ _
Each "_" could be either an A,T,C, or G.
So there are 4 possibilities per "_"
So, there are 4 x 4 x 4 = 64 different possible alleles of a gene on one chromosome...?
Since there are 2 c
Genetics and Developmental Biology   Lo.Lee.Ta.   399   Asked 3 years ago
How to extract loci sequences at NCBI
How to extract loci sequences at NCBI
Hey peeps

im quite new to NCBI and genebank so heres my question

i need to extract sequences from 7 geneloci of 130 different bacterial strains deposited on genebank.
those sequences were all submitted in the context of one single study.
now instead of the time consuming process of extracting the sequences strain per strain in the taxonomy browser ,
Genetics and Developmental Biology   holzdan   186   Asked 3 years ago
Use the following table of progeny phenotypes for 7 different deletions
Use the following table of progeny phenotypes for 7 different deletions
Deletions can be used to map genes along a chromosome. In order to do this a series of crosses in which one parent is homozygous for a mutant allele is crossed with the other parent that is homozygous for a partial deletion of the region. The progeny are scored to determine whether they have the mutant phenotype ("m") or the wild-type phenotype ("+"). If a mutati
Genetics and Developmental Biology   sk2340   409   Asked 3 years ago
CD 40 on the B cell membrane must bind to CD40L on the TH cell in order for
CD 40 on the B cell membrane must bind to CD40L on the TH cell in order for
CD 40 on the B cell membrane must bind to CD40L on the TH cell in order for  (BLANK) to occur                                                                                  
Genetics and Developmental Biology   alwhite   361   Asked 3 years ago
Fly larva mutations for Gap, pair-rule, and maternal effect genes
Fly larva mutations for Gap, pair-rule, and maternal effect genes
The title say most of it. I'm supposed to draw the mutations in the Drosophila larva, but I also need to label the structures which my textbook is not helping me much with. So far I just know that the mutants are stubby little creatures... I also need to list the specific gene mutated since I guess these are gene families???
Genetics and Developmental Biology   Cheea5   273   Asked 3 years ago
Two different genes control the expression of coat colour in an organism.
Two different genes control the expression of coat colour in an organism.
3. Two different genes control the expression of coat colour in an organism. The allele B produces a black coat colour and the allele G produces a gray-striped coat. The gene B influences the expression of gene G. The gray-stripped coat pattern appears only when gene B is homozygous recessive. An albino (coat colour lacking) occurs when both genes are homozygous.
A pure-breedin
Genetics and Developmental Biology   GarthanthaclopZ   1145   Asked 3 years ago
Finding Phenotypes and Frequencies from Mapping
Finding Phenotypes and Frequencies from Mapping
13) In Drosophila, assume that the gene for scute bristles (s) is located at map position 0.0 and that the gene for ruby eyes (r) is at position 15.0. Both genes are located on the X chromosome and are recessive to their wild-type alleles. A cross is made between scute-bristled females and ruby-eyed males. Phenotypically wild F1 females were then mated to homozygous double mutant ma
Genetics and Developmental Biology   DslimanII   560   Asked 3 years ago
Two cats having short tails are mated and have 11 kittens. The offspring (kitte
Two cats having short tails are mated and have 11 kittens. The offspring (kitte
Two cats having short tails are mated and have 11 kittens.  The offspring (kittens) from this cross yield interesting results.  Of the 11 kittens, 3 are born with long tails, 2 are born with no tails and 6 are born with short tails.  What is the simplest genetic explanation for this litter of kittens and their parents?  Provide the genotypes of the parents and al
Genetics and Developmental Biology   sammijoe   569   Asked 3 years ago
Heteroduplex question
Heteroduplex question
People with the recessive disease, Purple Tongue Syndrome, are unable to make the enzyme Blue Pigment Decolorase (BPD). You isolate mRNA from a person (P) afflicted with the disease and from a normal person (N) and do the following:
i. Mix excess P mRNA with cloned genomic DNA carrying the BPD gene and, separately, mix Normal (N) mRNA with the same DNA.
ii. Raise the tempe
Genetics and Developmental Biology   tokki   302   Asked 3 years ago
People with the recessive disease, Purple Tongue Syndrome, are unable to make th
People with the recessive disease, Purple Tongue Syndrome, are unable to make th
People with the recessive disease, Purple Tongue Syndrome, are unable to make the enzyme Blue Pigment Decolorase (BPD). You isolate mRNA from a person (P) afflicted with the disease and from a normal person (N) and do the following:
i. Mix excess P mRNA with cloned genomic DNA carrying the BPD gene and, separately, mix Normal (N) mRNA with the same DNA.
ii. Raise the tempe
Genetics and Developmental Biology   tokki   513   Asked 3 years ago
How to calculate genetic map units?
How to calculate genetic map units?
Can someone please tell me what is the formulae for calculating genetic map units?

Here is the question from my quiz:

The cross GE/ge × ge/ge produces the following progeny: GE/ge 404, ge/ge 396, gE/ge 97, Ge/ge 103. From these data, one can conclude that there are 20 map units between the G and E loci.

I know that the answer is TRUE, but how??
Genetics and Developmental Biology   lanister12   386   Asked 3 years ago
Have I gone about this problem correctly?
Have I gone about this problem correctly?
Hi there, I was wondering if someone could let me know if I did this right or not. Thanks in advance for any help.

So, the problem states the following:

Quote
We have crossed one flower with a corolla that is white and personé (the original question is not in English and I can't find a definition for personé anywhere, doesn't really matter I
Genetics and Developmental Biology   RowanF   188   Asked 3 years ago
Evolution by Carl T Bergstorm
Evolution by Carl T Bergstorm
Hey guys,

I got my finals in a few days and was wondering if anybody could give me the link to the answers to the review questions in this book? I finished all the questions but I'm not entirely sure how to check them as there is no answer section and the wwnorton.com/studyspace doesn't have anything either. Thanks Confounded Face


Edit: If no one can find th
Genetics and Developmental Biology   immio   233   Asked 3 years ago
Explain differential gene expression respect to Dorsophila section in particular
Explain differential gene expression respect to Dorsophila section in particular
Explain differential gene expression respect to Dorsophila section in particular. Also, respect to epigenetic reprogramming in germ cells.
Thank you!
Genetics and Developmental Biology   Wendy115   283   Asked 3 years ago
Was Lewis just mapping them on a linkage map based on mutations?
Was Lewis just mapping them on a linkage map based on mutations?
Hi guys,

So I've spent a few days reviewing the genetic tools used in labs, but can't quite find the distinction between a few of the methods.

1. RT-PCR is used to determine if a specific gene is expressed; however, RNA-seq appears to do the same thing. I understand that RT-PCR uses a specific primer and thus tests the expression of one gene. Does RNA
Genetics and Developmental Biology   galpinj   180   Asked 3 years ago
What would be the size in base pairs of the largest and smallest amplicons that would be expected if
What would be the size in base pairs of the largest and smallest amplicons that would be expected if
Relevant details of the STRs are as follows

TH01

Chromosomal location: 11p15.5 (tyrosine hydroxylase, 1st intron)
Repeat motif: TCAT (GenBank top strand) although AATG (bottom strand) often used. Note that variants with a [AATG]nATG[AATG]n structure quite common e.g. [AATG]6ATG[AATG]3 would be 9.3 repeats.
Allele range: 3-14



For
Genetics and Developmental Biology   05mbodh   403   Asked 3 years ago
Deletions, insertion, and frameshift mutations are more serious than a point
Deletions, insertion, and frameshift mutations are more serious than a point
I got the following questions wrong on a test/assignment.  Can someone let me know what the correct answers are so I have the correct information for my final exam. Thx

#1   Deletions, insertions, and frameshift mutations are more serious than a point mutation because
A.  mis-sense mutations result in more malfunction than nonsense mutations
B.&nb
Genetics and Developmental Biology   slim16   671   Asked 3 years ago
Mastering genetics homework
Mastering genetics homework
i couldn't solve these questions , i would really appreciate your help
Genetics and Developmental Biology   Cosmoazh   752   Asked 3 years ago
A woman with normal vision whose father was colorblind marries a man with normal
A woman with normal vision whose father was colorblind marries a man with normal
a woman with normal vision whose father was colorblind marries a man with normal vision whose father was also colorblind. What proportion of their offspring will be colorblind? males and females
Genetics and Developmental Biology   sailorette   334   Asked 3 years ago
Why would the method used in yeast be ineffective in mice?
Why would the method used in yeast be ineffective in mice?
Targeted gene knockouts involve the deletion or disruption of a given gene. What method might be effectively used to knock out a gene in yeast?  What method might be used in mice?  Why would the method used in yeast be ineffective in mice?
Genetics and Developmental Biology   Chrysler2008   225   Asked 3 years ago
Describe the general structure of a transcription factor.
Describe the general structure of a transcription factor.
Describe the general structure of a transcription factor.  What two domains do transcription factors tend to have?
Genetics and Developmental Biology   Chrysler2008   209   Asked 3 years ago
Dysfunction in what process leads to the O blood type?
Dysfunction in what process leads to the O blood type?
Regarding the nature of the ABO blood groups, dysfunction in what process leads to the O blood type?
Genetics and Developmental Biology   Chrysler2008   727   Asked 3 years ago
Assume that you have cut λ DNA with the restriction enzyme HindIII.
Assume that you have cut λ DNA with the restriction enzyme HindIII.
Assume that you have cut λ DNA with the restriction enzyme HindIII. You separate the fragments on an agarose gel and stain the DNA with ethidium bromide. You notice that the intensity of the stain is less in the bands that have migrated closer to the "+" pole. Give an explanation for this finding.
Genetics and Developmental Biology   Chrysler2008   783   Asked 3 years ago
Regarding a gene's DNA sequence, what is meant by a sequence motif?
Regarding a gene's DNA sequence, what is meant by a sequence motif?
Regarding a gene's DNA sequence, what is meant by a sequence motif? 
Genetics and Developmental Biology   Chrysler2008   261   Asked 3 years ago
What advantages does pUC18 have in terms of recombinant DNA technology?
What advantages does pUC18 have in terms of recombinant DNA technology?
What advantages does pUC18 have in terms of recombinant DNA technology?  List 3 such advantages.
Genetics and Developmental Biology   Chrysler2008   894   Asked 3 years ago
Help with Identificatying Restriction Enzyme Recognition Sites in a DNA sequence
Help with Identificatying Restriction Enzyme Recognition Sites in a DNA sequence
Hi Folks,

I'm really struggling with a PCR & restriction enzyme question that's part of my formative (unmarked) work for the summer months in preparation from an Applied Biology course at University.

The entire set of questions are set out on an instruction sheet so I'll try to replicate them here as I'm struggling to fully understand ho
Genetics and Developmental Biology   AppliedBiology9   407   Asked 3 years ago
Examine the graphs and answer the following questions:
Examine the graphs and answer the following questions:
B) what is occurring at E

C) what is occurring at region F

D) what events are occurring in region G

E) what are suitable labels for regions H and I
Genetics and Developmental Biology   Taylorbishopxox   297   Asked 2 years ago
The role of tumor suppressor genes in cancer developmen
The role of tumor suppressor genes in cancer developmen
 Confounded Face
Genetics and Developmental Biology   watermelona3   399   Asked 2 years ago
Describe a technological procedure that could be used to determine the genetic condition of a fetus
Describe a technological procedure that could be used to determine the genetic condition of a fetus
Could someone please help me with this question?

Also, for the second part of the question it asks to whom a genetic counsellor would recommend this procedure... I thought it would be to older women who have a higher risk of getting children with a genetic disorder, is that right?
Genetics and Developmental Biology   x-bio-x   244   Asked 2 years ago
The first two prenancies for a couple result in late term stillbirths...
The first two prenancies for a couple result in late term stillbirths...
The first two pregnancies for a couple result in late term stillbirths. The reproductive histories of both families, over 3 generations, were compiled. A pattern of frequent miscarriages, stillbirths and malformed babies that died shortly after birth were seen in the husband's family. The husband has a karyotype done, which shows that he has the normal number of chromosomes. Wh
Genetics and Developmental Biology   chitowwn94   232   Asked 2 years ago
Explore
Post your homework questions and get free online help from our incredible volunteers.
Learn More
Improve Grades
Help Others
Save Time
Accessible 24/7
  95 People Browsing
Your Opinion
Where do you get your textbooks?
Votes: 98