Genetics and Developmental Biology

Viable human DNA?

Viable human DNA?

How much do biologists know which DNA sequences would create a viable human being?

CarbonRobot   216   5 Replies

Anonymous

Intestinal stem cell overproliferation

Intestinal stem cell overproliferation

Intestinal stem cell overproliferation (ISCO) is a condition found in several human populations. The concentration of the Isco protein in intestinal cells (these include the stem cells that reside in the inner region of the tube) is higher in ISCO in

12

fan198   453   18 Replies

Anonymous

About plant mutation

About plant mutation

The original strain (wild type; WT) and two mutant strains of plant X are available, mutant A (mutA) and mutant B (mutB). Dr. Mishima started Experiment 2 with all three strains growing together in a flower bed. The seeds for all three strains are “t

12

fan198   519   17 Replies

Anonymous

Species-accumulation curves

Species-accumulation curves

PICTURES ARE ATTACHED:
Q9. Examine the following statements about species-accumulation curves and check all that are true.
a-Accumulation curves are used to estimate local or alpha diversity.
b-Accumulation curves increase linearly as

12

gh1991   30496   20 Replies

Kendra Brown1

Sickle cell anemia is an inheritable red blood cell disorder that results in sickle-shaped red blood ...

Sickle cell anemia is an inheritable red blood cell disorder that results in sickle-shaped red blood ...

1) SEE IMAGE ATTACHED



2) SEE SECOND IMAGE TO ANSWER

Sickle cell anemia is an inheritable red blood cell disorder that results in sickle-shaped red blood cells. The sickle-shaped red blood cells can stick to blood ves

Anonymous   293   5 Replies

Adrijaa Sengupta

13 Questions Answer all please some are attached I need it today please and thanks

13 Questions Answer all please some are attached I need it today please and thanks

1) Some events that occur during protein synthesis

1) mRNA binds to a ribosome.
2) Transcription completes.
3) mRNA leaves the nucleus.
4) tRNA attaches to the start codon.
5) Ribosome reads the mRNA codons.
6) Sto

Anonymous   257   4 Replies

bio_man

Since the seedless bananas are triploid open parentheses 3 n close parentheses, and do not produce ...

Since the seedless bananas are triploid open parentheses 3 n close parentheses, and do not produce ...

1. Since the seedless bananas are triploid open parentheses 3 n close parentheses, and do not produce viable seeds for reproduction. To grow more seedless banana plants, farmers take a side shoot and replant it.

This type of reproduction i

Anonymous   147   1 Reply

bio_man

Help please i need help today 7 questions some attached

Help please i need help today 7 questions some attached

1) In mice, albinism (g) is recessive to grey coat colour (G). A grey mouse mated with an albino mouse. Over the course of several months, 38 pups were born. Out of 38 pups, 17 had a grey coat, and 21 were albino.

Which of the following ro

Anonymous   282   4 Replies

bio_man

HELP PLEASE 13 QUESTIONS

HELP PLEASE 13 QUESTIONS

1) Match each description with the correct genetic term.

1) Selection of the most favourable characteristics

2) Transmission of parent’s characteristics by DNA found in genes

3) Offspring from the F1 cross

Anonymous   245   3 Replies

Anna le

10 questions i really need help please some attached

10 questions i really need help please some attached

1) SEE IMAGE TO ANSWER:
Which of the following events occur in the stage of cell division illustrated above?

a. Homologous chromosomes align at the equator

b. Sister chromatids separate

c. Daughter cells form

Anonymous   291   4 Replies

Anonymous

Provide the phenotypes and genotypes of all individuals in the pedigree.

Provide the phenotypes and genotypes of all individuals in the pedigree.

Duchenne muscular dystrophy is an X-linked recessive trait. The following pedigree shows the occurrence of this disorder in an extended family.
Provide the phenotypes and genotypes of all individuals in the pedigree.

Enter phenotype

silverardo   460   2 Replies

bio_man

Help please

Help please

1) Identify the sequence of structures through which sperm pass from the site of production to the vagina. SEE FIRST PHOTO ATTACHED

Answer.        Answer.       Answer.     Answer

Anonymous   139   2 Replies

Anna le

If a person with a pericentric inversion is phenotypically normal why do they of

If a person with a pericentric inversion is phenotypically normal why do they of

If a person with a pericentric inversion is phenotypically normal why do they often have abnormal children? 

Dextor   1025   1 Reply

bolbol

Can a child inherit a German appearance?

Can a child inherit a German appearance?

 Hello!  But I just want to know the opinion of experts.  Here, from one group in the social network on racial studies, I was told such a thing that if there is a relative (grandmother / grandfather or great-grandfather / great-

Artemprives   111   1 Reply

doubleu

Warning coloration and horizontal gene transfer

Warning coloration and horizontal gene transfer

Species which are distasteful or poisonous to predators, or carry a sting, often have warning coloration. e.g. Cinnabar moths, wasps, bees. In some cases these colour patterns are mimicked by harmless species. e.g. Some flies have the banded warning

Geoff Kitching   125   3 Replies

bio_man

Covalent Bonding Question

Covalent Bonding Question

Which ones are covalently bonded?
 
a)Two adjacent amino acids in a peptide
b)Two adjacent nucleotides in RNA
c)A guanine-cytosine base pairing
d)Hydrophobic amino acid from peptide 1 and hydrophobic amino acid from peptide

diamond3094   611   1 Reply

bolbol

How to deal with different adn lenghts in the making of a phylogenetic tree?

How to deal with different adn lenghts in the making of a phylogenetic tree?

I´m creating a phylogenetic tree algorithm that will classify species according it's beta globine of hemoglobin and sequences, but I' don't know how to deal with sequences of different lengths.

serjaumen22   128   1 Reply

fan198

what are some techniques of genetic recombination research

what are some techniques of genetic recombination research

What are some of the techniques used in genetic recombination research and what are some of the products that have been made? All i can think of is taking a plasmid and having the bacterium take it up then recombination occurs Lol!

4747   448   1 Reply

bolbol

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 childr

x-bio-x   424   1 Reply

bolbol

Northern blot analysis--lac operon?

Northern blot analysis--lac operon?

Northern blot analysis is performed on cellular mRNA isolated from E. coli. The probe used in the northern blot analysis hybridizes to a portion of the lacY sequence. Above is an example of the autoradiograph from northern blot analysis for a wild-ty

srmtrc   3753   5 Replies

Anonymous

What is a chemical mark?

What is a chemical mark?

I'm doing an assignment where I read an article about genetics and explain it in a nutshell slideshow presentation. In the article it says, "They mapped chemical marks on the DNA that determined which genes they expressed". Tried searc

Craterface   120   1 Reply

Anonymous

Is there any chemical used to identify homozygous and heterozygous offsprings

Is there any chemical used to identify homozygous and heterozygous offsprings

I need to discover a chemical that can give clear difference when an offspring's gene is stained. the different result will help me to identify whether the gene have homozygous or heterozygous alleles.

YIDU   96   1 Reply

bio_man

Genetic Engineering of Invasive Plants and Insects

Genetic Engineering of Invasive Plants and Insects

Dear Biology Community:
      Could we approach the problem of invasive plants and insects this way?
      We could genetically engineer large numbers of the same invasive plant or insect species to be identica

Carl Mesaros   105   1 Reply

bio_man

About the recombination frequency

About the recombination frequency

A recombination frequency of 50% is therefore the maximum recombination frequency that can be observed, and is indicative of loci that are either on separate chromosomes, or are located very far apart on the same chromosome.
Therefore, in what w

JimmyBui   163   2 Replies

dreama_g

Genetics (urgent)

Genetics (urgent)

In certain breeds of hamsters, females can be black, orange, or a black-and-orange mosaic called tortoise-shell, where small patches of black and orange fur are interspersed (see image at right). However, males of these breeds can be either black or

KOS0   169   4 Replies

Anonymous

Genetics/meiosis

Genetics/meiosis

The diploid (2n) chromosome number for the African clawed frog (Xenopus laevis) is 36. Consider germ-line cells or gametes of this species before, during, and after meiosis. Complete the chart below indicating how many chromosomes and chromatids an i

Ko890   172   2 Replies

Anonymous

Genetics/autosomal recessive inheritance (urgent)

Genetics/autosomal recessive inheritance (urgent)

The human pedigree shows the inheritance pattern for a trait known to be an autosomal (not sex-linked) recessive. Black symbols indicate individuals showing the trait, circles indicate females, and squares males. In the space below (1) identify the p

Ko890   97   1 Reply

Anonymous

Genetics/map distance (urgent)

Genetics/map distance (urgent)

The figure at right shows two homologous pairs of chromosomes during the G1 phase of a female fruit fly Drosophila melanogaster; the maternal and paternal chromosomes are shown in red and light blue, respectively. This female is heterozygous FfGgHh a

Ko890   127   3 Replies

Ko890

Genetics, Map distance

Genetics, Map distance

The figure at right shows two homologous pairs of chromosomes during the G1 phase of a female fruit fly Drosophila melanogaster; the maternal and paternal chromosomes are shown in red and light blue, respectively. This female is heterozygous FfGgHh a

Ko890   117   1 Reply

Anonymous

Genetics (urgent)

Genetics (urgent)

In certain breeds of hamsters, females can be black, orange, or a black-and-orange mosaic called tortoise-shell, where small patches of black and orange fur are interspersed (see image at right). However, males of these breeds can be either black or

KOS0   146   1 Reply

Anonymous

Genetics question

Genetics question

In certain breeds of hamsters, females can be black, orange, or a black-and-orange mosaic called tortoise-shell, where small patches of black and orange fur are interspersed (see image at right). However, males of these breeds can be either black or

KOS0   152   1 Reply

bio_man

Refer to the image below (same as QI). As soon as the two frog populations are separated Which Of th

Refer to the image below (same as QI). As soon as the two frog populations are separated Which Of th

Help me with this question, please!

Refer to the image below (same as QI). As soon as the two frog populations are separated Which Of the following Will have the greatest effect on divergence between the two populations? Why?
Genetic

Anonymous   125   2 Replies

Anonymous

You decide to perform dideoxy sequencing on a PCR product. You add the appropria

You decide to perform dideoxy sequencing on a PCR product. You add the appropria

You decide to perform dideoxy sequencing on a PCR product. You add the appropriate 32P-labeled primer, DNA polymerase, DNA template (the PCR product), buffer, dNTP mix, and a small amount of one of the four ddNTPs to four reaction tubes. You run the

mki   2405   2 Replies

Bobby Kontonis

Schistosoma mansoni is a blood fluke that can cause chronic parasitic disease in humans. The larval ...

Schistosoma mansoni is a blood fluke that can cause chronic parasitic disease in humans. The larval ...

Schistosoma mansoni is a blood fluke that can cause chronic parasitic disease in humans. The larval form of the blood fluke can penetrate human skin and develop into the adult form inside the host.
The genes on chromosome 4 and the distances bet

Anonymous   166   4 Replies

Anonymous

Structural aberations

Structural aberations

A normal chromosome is with segments: ABCDEFG
Structural aberration is ADCBEF. Is it a paracentric or pericentric inversion?

Dzano   92   1 Reply

bio_man

Heterozygous cross with linked genes

Heterozygous cross with linked genes

You have 2 heterozygous Black rabbits with a rough coat. They get a child that has a white and smooth coat. You also know that the 2 different genes are located on the same chromosome and are 6 cM apart. What are all the possible genotypes of the off

DNADAN   118   3 Replies

bio_man

Hemophilia is a sex-linked recessive trait. A male hemophiliac and phenotypically normal female have ...

Hemophilia is a sex-linked recessive trait. A male hemophiliac and phenotypically normal female have ...

1) Hemophilia is a sex-linked recessive trait. A male hemophiliac and phenotypically normal female have a son with hemophilia.

They would like to have one more child. What is the probability of having a child without hemophilia? Explain u

samantacastillo   145   2 Replies

Anonymous

One question see photo

One question see photo

see photo attached
1) Identify the genotypes of the following individuals:


Individual   Genotype
II-1   
II-2   
II-4   
II-5   
III-2   
III-3   

Anonymous   161   4 Replies

Anonymous

I need help fill up the chart attached phtoto long question

I need help fill up the chart attached phtoto long question

1) Complete the following table and answer the next two questions. (3.5 marks)

mRNA and tRNA are involved in producing proteins from genes in the DNA. One codon consisting of 3 nucleotides corresponds to an amino acid in the protein that g

Anonymous   119   2 Replies

Anonymous

Need it now thanks

Need it now thanks

1) In mice, black fur (B) is dominant over brown fur (b). Two black mice had only black offspring.
Which of the following offspring genotypes could result from the parental cross? Select all that apply.

Select one or more:

Anonymous   104   2 Replies

Anonymous