Genetics and Developmental Biology

How is tryptophan-charged tRNA regulated in the trp operon?

How is tryptophan-charged tRNA regulated in the trp operon?

Diagram the trp operon and describe the manner in which it is regulated in response to both
free tryptophan and tryptophan-charged tRNA.

sorryimdumb   22   1 Reply

psyche360

Complementation problem: possible region of deletion place the mutation on the thick line which ...

Complementation problem: possible region of deletion place the mutation on the thick line which ...

I need help with part B of this problem, I've asked Genetics tutors, other professors and even went on chegg to use the expert Q&A --  I've done part A and I know that 3 complements 1, 2 and 6 are unable to complement and 3,4,5 and

exlax2   30   N/A

Hard

exlax2

Identify the number of corn kernels that represent the four phenotypes.

Identify the number of corn kernels that represent the four phenotypes.

The information above represents an F2 generation. Identify the number of corn kernels that represent the four phenotypes.

Number :    ______    _______      _______     ________ 
&n

SAMH   1815   3 Replies

bio_man

The individual kernels of corn are a stage in the life cycle of a corn plant. Each kernel develops ...

The individual kernels of corn are a stage in the life cycle of a corn plant. Each kernel develops ...

Info: The individual kernels of corn are a stage in the life cycle of a corn plant. Each kernel develops from a separate fertilization of an egg to form a zygote, a seed. The kernels in the above diagram represent individuals of an F2 generation. The

blacklotus11   33   1 Reply

bio_man

If a roan shorthorn is crossed with a white-coated shorthorn, what is the probability that the ...

If a roan shorthorn is crossed with a white-coated shorthorn, what is the probability that the ...

 1.If a roan shorthorn is crossed with a white-coated shorthorn, what is the probability that the offspring will be a roan shorthorn?
 
Record a value from 0 to 1 rounded to two significant digits

2.A man of unknown genotype wit

rachelle17   38   1 Reply

bio_man

Mendel's Law of Independent Assortment states that (Multiple Questions)

Mendel's Law of Independent Assortment states that (Multiple Questions)

1. Mendel's Law of Independent Assortment states that

Select one:
a. nonallelic genes are independent if found on separate chromosomes
b. chromosomes are the carriers of genes that do not separate to form gamet

blacklotus11   83   2 Replies

blacklotus11

Map these four genes and give all the map distances

Map these four genes and give all the map distances

I know that rv is in the middle, but how do I begin this problem or solve it?

exlax2   31   1 Reply

bio_man

What are three experiments and/or techniques that would distinguish between the beta A and beta S ...

What are three experiments and/or techniques that would distinguish between the beta A and beta S ...

Genetic variation can be detected by examining DNA, RNA and/or proteins. In Sickle Cell Disease (SCD), two variants of the beta-globin gene have been identified: beta A and beta S. Describe three experiments and/or techniques that would distinguish b

sorryimdumb   31   1 Reply

bio_man

Please explain the process of alternative splicing

Please explain the process of alternative splicing

 Use the CT/CGRP gene as your model.

lavashooter3   58   3 Replies

bio_man

Trombone Model of DNA Replication

Trombone Model of DNA Replication

Please explain the trombone model of DNA replication.
Describe the role of the leading and lagging strand in the process, and provide a list of the key components

lavashooter3   38   2 Replies

habiba

What is the purpose of DNA sequencing in this investigation?

What is the purpose of DNA sequencing in this investigation?

B.   What is the purpose of DNA sequencing in this investigation?

morgal2015   32   1 Reply

bio_man

Based on your DNA sequence analysis of the four suspected tiger samples, can you infer that tiger ...

Based on your DNA sequence analysis of the four suspected tiger samples, can you infer that tiger ...

Based on your DNA sequence analysis of the four suspected tiger samples, can you infer that tiger parts are being traded? Explain.

Faisal93   31   1 Reply

bio_man

Which sample sequences do not match the tiger’s sequence? Where in the first 40 base pairs do the ...

Which sample sequences do not match the tiger’s sequence? Where in the first 40 base pairs do the ...

Which sample sequences do not match the tiger’s sequence? Where in the first 40 base pairs do the non-matching sequences differ from the tiger’s? Refer to each non-matching nucleotide by its number in the sequence. Nucleotides 20 and 40 are labeled.

Faisal93   23   1 Reply

bio_man

How do antisense RNAs influence gene expression?

How do antisense RNAs influence gene expression?

Studying for an exam and can't figure out this question

Moso13   84   2 Replies

Jon Moulton

Recombination Frequency and Gene Mapping

Recombination Frequency and Gene Mapping

Using recombination frequency to map genes relative to each other is a powerful tool in genetics. A major limitation, however, is that Genetic Distance has an upper limit (i.e. one cannot establish linkage for genes that are more than 50 cM distant).

lavashooter3   47   2 Replies

bio_man

In Drosophila, brittle (b), ebony body (e) and gaucho (g) are three recessive genes.

In Drosophila, brittle (b), ebony body (e) and gaucho (g) are three recessive genes.

 If homozygous EBONY females are crossed with homozygous BRITTLE & GAUCHO males, the resulting F1 progeny are all wild-type. If heterozygous F1 females are mated with EBONY, BRITTLE & GAUCHO males, the following 1,000 progeny appear

lavashooter3   59   4 Replies

bio_man

The two point mutations in DNA that would change the code for oxytocin to ADH occur

The two point mutations in DNA that would change the code for oxytocin to ADH occur

The two-point mutations in DNA that would change the code for oxytocin to ADH occur?
A.at 1, where A would be replaced by T
  at 2, where C would be replaced by A

B.at 1, where U would be replaced by A
  &nbs

ktchern   75   5 Replies

bio_man

When the tRNA anti-codons match for the mRNA triplet codons, then the amino acid sequence ...

When the tRNA anti-codons match for the mRNA triplet codons, then the amino acid sequence ...

1)When the tRNA anti-codons match for the mRNA triplet codons, then the amino acid sequence synthesized is ______.



2)Is this sequence the same as the order of amino acids in hemoglobin illustrated in the beginning of this exer

ktchern   82   3 Replies

bio_man

What is the phenotype of the female and what is the phenotype of the female

What is the phenotype of the female and what is the phenotype of the female

what is the phenotype of the female and what is the phenotype of the male with resêct to the three traits shown in the above diagram


the female genotype is deP
the male: Dep
the female: ddeePP
the male: DdEePp

ktchern   92   1 Reply

harinder

Neither individual I-4 or I-6 has ever had his or her blood tested. What are their blood types? ...

Neither individual I-4 or I-6 has ever had his or her blood tested. What are their blood types? ...

Neither individual I-4 or I-6 has ever had his or her blood tested. What are their blood types? Enter your answer in its simplest form.
 
I - 4 is blood type Answer
.
I - 6 is blood type Answer

PLEASE HELP!!!!

txg   111   N/A

txg

What is the phenotype of the female and what is the phenotype of the male with respect to the three

What is the phenotype of the female and what is the phenotype of the male with respect to the three

1. What is the phenotype of the female and what is the phenotype of the male with respect to the three traits shown in the above diagram?
   Hint: Two possible ways to help visualize the traits is to write the genotypes as
   

Trinity.F   810   2 Replies

ktchern

Below is a diagram of DNA replication as currently believed to occur in E. coli. Arrows start from ...

Below is a diagram of DNA replication as currently believed to occur in E. coli. Arrows start from ...

(1) Which end (5' or 3') of the molecule is here?

(2) Which enzyme is probably functioning here to deal with supercoils in the DNA?

(3) Which enzyme is probably functioning here to unwind the DNA?

dthomas   98   1 Reply

hungshaohung

Analyzing chromosome 1 of a male and female

Analyzing chromosome 1 of a male and female

1. The first child of this couple was Rh- (Rhesus negative). What is the chance that the second child of this is a girl and Rh- (Rhesus negative)? Use Punnett squares and/or the calculation to show your work.

2. Nomenclature for writing al

helpmepassbio   159   N/A

helpmepassbio

What are the different pedigree patterns?

What are the different pedigree patterns?

I know for recessive they skip generations.  So for recessive there will be generations that don't have an affected individual. I know for autosomal recessive, there equal numbers of male and female individuals affected.  Can someone e

Moso13   46   1 Reply

habiba

What is the difference between a loss of function mutation and leaky mutation?

What is the difference between a loss of function mutation and leaky mutation?

Is a null mutation the same thing as a loss of function mutation?

Moso13   56   1 Reply

bio_man

How does primary protein structure affect higher levels of protein structure and how 3 dimensional ...

How does primary protein structure affect higher levels of protein structure and how 3 dimensional ...

I understand that the primary structure is the sequence of amino acids. And the secondary structure is made from the interactions of neighboring amino acids, making the polypeptide chain fold into the secondary structure( alpha helixes and beat pleat

Moso13   48   1 Reply

Medium

bio_man

What is the role of ribonucleoside triphosphate in transcription?

What is the role of ribonucleoside triphosphate in transcription?

I'm reviewing transcription for my genetics final.  I read online that it serves as the raw material, but I'm not sure what that means.  Can anyone explain what the role is?

Moso13   47   1 Reply

bio_man

What is the polarity of DNA?

What is the polarity of DNA?

I know the sugar-phosphate backbone of DNA is polar because of the - charge on the phosphate group.  Does that make DNA as a whole polar?

Moso13   80   2 Replies

bio_man

You further investigate the regulatory proteins that bind to Regions 1,2, and 3 using gel shift ass

You further investigate the regulatory proteins that bind to Regions 1,2, and 3 using gel shift ass

[predict the gel shift assay results for each mutates fragment by dragging the labels to the correct locations. See attachment][/center]

apguntin   79   1 Reply

bio_man

Determine the appearance for northern blots of the bacteria listed below. In each case, lane 1 is ...

Determine the appearance for northern blots of the bacteria listed below. In each case, lane 1 is ...

Part A
Determine the appearance for northern blots of the bacteria listed below. In each case, lane 1 is for mRNA isolated after growth in a glucose-containing (minimal) medium, and lane 2 is for mRNA isolated after growth in a lactose-only medi

WOLFYy   82   1 Reply

bio_man

Appreciation of second-order false belief requires __________, a form of perspective taking that inv

Appreciation of second-order false belief requires __________, a form of perspective taking that inv

Appreciation of second-order false belief requires __________, a form of perspective taking that involves the ability to reason simultaneously about what two or more people are thinking.
Question 10 options:
   
making mental inferences

sweetphil5   164   1 Reply

bio_man

A child born to a perfectly healthy family was diagnosed with a rare disease. After abnormal ...

A child born to a perfectly healthy family was diagnosed with a rare disease. After abnormal ...

1) A child born to a perfectly healthy family was diagnosed with a rare disease.  After abnormal behavior in the child, the family decided to get his DNA checked via 23andme company and also consult an oncology doctor.  The child was diagno

DeltaHQ   133   2 Replies

bio_man

Help with this Population genetics question?

Help with this Population genetics question?

Using the population data in the table given below (see attachment)

1 - Calculate the population frequency of individuals with the 16/17 genotype at D3S1358

2 - Calculate the population frequency of individuals with the 14/18 ge

LaviBookman   87   3 Replies

bio_man

If the initial allele frequencies are p = 0.75 and q = 0.25 and the a allele is a lethal recessive, ...

If the initial allele frequencies are p = 0.75 and q = 0.25 and the a allele is a lethal recessive, ...

If the initial allele frequencies are p = 0.75 and q = 0.25 and the a allele is a lethal recessive, what will be the frequency of the a allele in the future? Use the following equation: qn = q0/(1 + nq0), where qn = the new gene frequency, q0 = the i

lh23   96   1 Reply

bio_man

Name three applications for examining sequence variants such as RFLP

Name three applications for examining sequence variants such as RFLP

having some issues with this question

ppanderson   197   1 Reply

Medium

bolbol

How many genes are affecting the phenotype in a complementation analysis?

How many genes are affecting the phenotype in a complementation analysis?

I'm studying for an exam and trying to figure out this question but I keep getting confused.  So this is in drosphila, legs are either elongated( wild-type) or crumpled/ gnarled (mutant).  Its asking how many genes affect the leg pheno

Moso13   52   3 Replies

bio_man

Responsible approach to the utilisation of consumer products

Responsible approach to the utilisation of consumer products

Consider three items of clothing in your household. One must be synthetic materials and the other two not. Answer 1.1-1.5

1.1 Name the fibres which are used to make each item.(3)

1.2 Explain what natural resources are used to ma

Sizacle   96   1 Reply

nostalgicGirl

How might one generate a line of male mice that contain two X chromosomes?

How might one generate a line of male mice that contain two X chromosomes?

answered is required for molecular genetics exam Module 4

Batisa   202   1 Reply

bio_man

Sahelanthropus tchadensis has been proposed as a hominin because

Sahelanthropus tchadensis has been proposed as a hominin because

Sahelanthropus tchadensis has been proposed as a hominin because

   the position of the foramen magnum is located anteriorly (towards the front of the face).
   the knee joints have the capability of locking.
   it has large canines an

xogns8791   108   1 Reply

bolbol

What is the general scheme for generating a transgenic mouse strain?

What is the general scheme for generating a transgenic mouse strain?

generating transgenic mice involves five basic steps: purification of transgenic construct, harvesting donor zygotes, microinjection of transgenic construct, implantation of microinjected zygotes into the pseudo-pregnant recipient mice, and genotypin

Batisa   181   1 Reply

bio_man