Genetics and Developmental Biology

Part C - Gamete formation in the F1 of polygenic crosses

Part C - Gamete formation in the F1 of polygenic crosses

Part C - Gamete formation in the F1 of polygenic crosses

As you have determined, the F1 is heterozygous for four loci that affect fruit segment number (A+ A 0 B+ B 0 C+ C 0 D+ D 0). This means that the F1 can produce 16 distinct gamete typ

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paramed91   3280   17 Replies

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leslieknope

You recognize that Athlete 2 may have one of several possible defects in the AR signaling pathway.

You recognize that Athlete 2 may have one of several possible defects in the AR signaling pathway.

You recognize that Athlete 2 may have one of several possible defects in the AR signaling pathway.

For the molecular defects listed below, predict what their effects would be on AR signaling and ultimately on the development of the genital

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dimplepatel2013   10839   20 Replies

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Kusukusurima

Which of the following mutational changes would you predict to be the most

Which of the following mutational changes would you predict to be the most

 Which of the following mutational changes would you predict to be the most deleterious to gene function? Explain your answer.
1.   Insertion of a single nucleotide near the end of the coding sequence.
2.   Removal of a single nucleotide near

saranyaallu   40   1 Reply

bio_man

The answer that provides correct information about the genotypes for individuals I-1, II-1, and II-4 ...

The answer that provides correct information about the genotypes for individuals I-1, II-1, and II-4 ...

The answer that provides correct information about the genotypes for individuals I-1, II-1, and II-4 is
Select one:


a. I-1 is IAIA; II-1 is IAIA or IAi; II-4 is IAi
b. I-1 is IAIA;  II-1 is IAIA or IAi or IBIB or IBi ;

silverardo   286   2 Replies

aliak

How does each SNP affect the targeting and processing of the insulin precursor

How does each SNP affect the targeting and processing of the insulin precursor

How does each SNP affect the targeting and processing of the insulin precursor protein?
Recall that under normal circumstances, the insulin precursor protein is processed in the lumen of the ER to produce the mature (functional) insulin protein.

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nsch22   17133   49 Replies

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lholloway

Comparing map-based and whole-genome shotgun sequencing...

Comparing map-based and whole-genome shotgun sequencing...

I need help with this Mastering Genetics problem:


Decide if the following statements best describe map-based genome sequencing, best describe whole-genome shotgun sequencing, or apply equally to both sequencing methods. Sort each sta

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verbatim   8073   27 Replies

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hcampbell24

When 9-year-old Nathan's mother blew up and inflatable beach ball, he understood that if he let the ...

When 9-year-old Nathan's mother blew up and inflatable beach ball, he understood that if he let the ...

When 9-year-old Nathan's mother blew up and inflatable beach ball, he understood that if he let the air out, it would return to its original form.  Nathan understands

Bosire20Ta   47   1 Reply

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bolbol

Gene Interaction - Mastering Chemistry, Alleles?

Gene Interaction - Mastering Chemistry, Alleles?

Based on your analysis so far, you assign the following allele symbols to the three lines:
Wild type = A_ V_
Aberdeen White = a a
Kansas Yellow = aYaY
Victoria White = v v

Using these symbols, assign genotypes to the

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loljaneysaur   10289   55 Replies

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serenapulente

As the chromosomes of a parent cell are duplicated and distributed to the two daughter cells during

As the chromosomes of a parent cell are duplicated and distributed to the two daughter cells during

As the chromosomes of a parent cell are duplicated and distributed to the two daughter cells during cell division, the structure of the chromosomes changes.

Answer the three questions for each phase of the cell cycle by dragging the yes an

sue   178184   8 Replies

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fiewfiufiefewf

Using new information, determine parents genotypes and probability of disease

Using new information, determine parents genotypes and probability of disease

Individual IV-3 is born as a male affected with condition B but not condition A. His parents are bred again, and an ultrasound shows that the fetus is another male. The relevant portion of the pedigree is shown below.

Use this new informat

greekdancer20   3639   7 Replies

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1111111

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   640   5 Replies

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teqqqie

3.In some breeds of dogs a dominant allele controls the characteristic of barking while trailing.

3.In some breeds of dogs a dominant allele controls the characteristic of barking while trailing.

3.   In some breeds of dogs a dominant allele controls the characteristic of barking while trailing. In these dogs an allele of another independent gene produces erect ears; it is dominant over the allele for drooping ears. Suppose  you are a dog

nyirenda   137   2 Replies

bio_man

Experimental prediction: Predicting the results after additional rounds of replication

Experimental prediction: Predicting the results after additional rounds of replication

To confirm the semiconservative model of replication, it was important for Meselson and Stahl to quantify the amount of DNA in each band produced by density-gradient centrifugation. To accomplish this, they took advantage of the fact that DNA absorbs

bio2018   93   1 Reply

bio_man

How to calculate recombination frequency for hybrid parents case

How to calculate recombination frequency for hybrid parents case

Both sides of grandfather's genes are dominant AABB and both sides of grandmother's genes are recessive aabb, and wife and husband are both are both hybrid AaBb.  If this couple give birth to total 100 children (49 AB, 3 Ab, 2 aB and 4

shigey   153   1 Reply

bio_man

Recombinant Frequency SNP markers: monohybrid ?

Recombinant Frequency SNP markers: monohybrid ?

Hi

 I am curious to know how calculate recombinant frequency for monohybrids ( three point link, gene map etc.)

Here is an example based SNP calls ( xx=parent 1, yy= parent 2) with three markers (M1, M2, M3) these are hypotheti

wkm21   162   1 Reply

bio_man

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   1608   4 Replies

Kaydenmartz

Describe the differences between direct-acting and indirect-acting carcinogens.

Describe the differences between direct-acting and indirect-acting carcinogens.

Describe the differences between direct-acting and indirect-acting carcinogens.

AidenSmith   166   2 Replies

tonitin456

As an H2 value approaches 0.0, which of the following must be true?

As an H2 value approaches 0.0, which of the following must be true?

As an H2 value approaches 0.0, which of the following must be true?
 
  A) Almost all of the variation in phenotype is VG.
  B) Almost all of the variation in phenotype is VE.
  C) Identical (MZ) twins are virtually all discordan

aj20386   119   3 Replies

helenec

An X-linked gene occurs in only females (True or false?)

An X-linked gene occurs in only females (True or false?)

An X-linked gene occurs in only females.
 
  Indicate whether the statement is true or false

jeddsn   141   2 Replies

NursingGeek55

Why do mutations in different genes cause the same disease across different families?

Why do mutations in different genes cause the same disease across different families?

Diseases can have both genetic and environmental components responsible. In some complex inheritance following diseases, a single gene is not responsible for the disease across different cohorts. Considering the example of epilepsy, even when it is m

Vaibhvim   382   1 Reply

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Madresa

I need to know two ways that chemotherapy drugs might inhibit DNA replication and sides effects?

I need to know two ways that chemotherapy drugs might inhibit DNA replication and sides effects?

Cancer often involves excessive and uncontrolled mitosis, resulting in a tumour. Some of the chemotherapeutic agents used in cancer therapy inhibit DNA replication. Propose and explain two possible ways that chemotherapy drugs can inhibit replication

Uniquoa123   150   3 Replies

bio_man

Genetics Practice Help (Bio)

Genetics Practice Help (Bio)

When a double stranded DNA molecule is heated, it denatures into two single stranded molecules.  The reason for that is that:

 A)    the proteins associated with the double helix are denatured and can no longer hold the DNA strands toge

JoeE   125   1 Reply

bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

A possible sequence of nucleotides in the DNA that would code for the polypeptide sequence –Phenylalanine, Leucine-Tyrosine-Cysteine- would be
 
A)    TTG-CTA-CAG-TAG
B)    AAU-GAC-GUC-AUA
C)    AUG-CTG-CAG-TAT
D)    AAA-AAT-ATA-AC

JoeE   113   1 Reply

bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

A particular eukaryotic protein is 300 amino acids long.  Which of the following could be the number of nucleotides in the DNA that codes for this protein?
 
A)    3
B)    100
C)    300
D)    900
E)    1800

JoeE   102   1 Reply

bio_man

Genetics Practice Help (Bio)

Genetics Practice Help (Bio)

If cytosine makes up 22 % of the nucleotides in a sample of DNA from an organism, then adenine would make up what percent of the bases?
 
A)    22
B)    44
C)    28
D)    56

JoeE   114   1 Reply

bio_man

Help for Genetics Practice

Help for Genetics Practice

Which of the following is NOT related to ribosomal activity?
 
A)    A site

 
B)    spliceosome

 
C)    codon recognition

 
D)    peptide bond formation

 
E)    P site

JoeE   114   1 Reply

bio_man

Genetics Help for Practice

Genetics Help for Practice

The processing of the primary transcript involves
 
A)    the removal of introns and the splicing together of exons

 
B)    the removal of exons and the splicing together of introns

 
C)    the addition of a guanin

JoeE   104   1 Reply

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bio_man

Genetics Help for Practice

Genetics Help for Practice

A frameshift mutation could result from
 
A)    a base insertion only

 
B)    a base deletion only

 
C)    a base substitution only

 
D)    deletion of three consecutive bases

 
E)    ei

JoeE   111   1 Reply

bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

A silent mutation can result from:
 
A)    the insertion of a base pair

 
B)    the substitution of a base pair that results in the same amino acid

 
C)    the deletion of a base pair

 
D)    the subs

JoeE   113   1 Reply

bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

mRNA
 
A)    makes up the ribosomes in the cell

 
B)    carries the genetic information from the nucleus into the cytoplasm

 
C)    is helical

 
D)    is a double strand

 
E)    always

JoeE   113   1 Reply

bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

Which of the following statements is NOT true for DNA replication?
 
A)    the enzyme DNA polymerase checks for errors in base pairing

 
B)    each strand acts as a template for the synthesis of the new strands

 

JoeE   106   1 Reply

bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

Which of the following statements concerning protein synthesis is NOT true?
 
A)    proteins are assembled with the help of ribosomes

 
B)    tRNAs carry amino acids to the ribosome-mRNA complex

 
C)    ribosome

JoeE   107   1 Reply

bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

Which of the following enzymes synthesizes short segments of RNA?
 
A)    helicase
B)    exonuclease
C)    ligase
D)    DNA polymerase
E)    primase

JoeE   104   1 Reply

bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

When a ribosome first attaches to an m-RNA, two t-RNAs bind to the ribosome.  The first t-RNA that recognizes the initiation codon binds to the:
 
A)    The (A) site of the ribosome only
B)    The (P) site of the ribosome only
C)

JoeE   98   1 Reply

bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

Except for the T-U exchange, the tRNA anticodon is identical to
 
A)    template strand

 
B)    coding strand

 
C)    mRNA

 
D)    amino acid it carries

 
E)    A-site in the riboso

JoeE   108   1 Reply

bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

Which of the following mutations is potentially the most harmful?
 
A)    base-pair substitution at the end

 
B)    a frameshift mutation at the beginning

 
C)    a frameshift mutation at the end

 

JoeE   116   1 Reply

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bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

During translation, chain elongation continues until what happens?
 
A)    no further amino acids are needed by the cell

 
B)    all tRNAs are empty

 
C)    the polypeptide is long enough

 
D)    chai

JoeE   116   1 Reply

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bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

Transcription factors assist RNA polymerase bind to the DNA

a) True
 
b) False

JoeE   106   1 Reply

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bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

Proteins are modified before they leave the cell
 
a) True
 
b) False

JoeE   110   1 Reply

bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

DNA ligase is an enzyme that

A) is used to tie parts of a DNA molecule together

B) is used in mutation repair of DNA molecules

C) works with DNA and RNA polymerase at various times in the cell

D) none of th

JoeE   104   1 Reply

bio_man