The T gene is necessary for the tail to develop in mice. What do you expect...
The T gene is necessary for the tail to develop in mice. What do you expect would happen to a mouse with a mutation that causes the T gene to be non-functional?
The mouse would have no tail
The mouse would have extra tails
The mouse would be normal
The mouse would grow a tail in the incorrect location
Homework Answers
The T gene is necessary for the tail to develop in mice. What do you expect would happen to a mouse with a mutation that causes the T gene to be non-functional?
Answer :
The mouse would grow a tail in the incorrect location.
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The T gene is necessary for the tail to develop in mice. What do
you expect...
In mice, the gene for tail length has 2 alleles: short is dominant to long. However,...
In mice, the gene for tail length has 2 alleles: short is dominant to long. However, short tail is lethal in the homozygous condition. A short tail mouse is crossed to a long tail mouse. What are the expected phenotype's and their ratios of the mouse pups in this litter? options: 25% long tails 75% long tails 100% long tails No long tails 50% long tails 33% long tails 67% long tails Following up to the previous question, 2 short...
Researchers have identified a gene in humans that (when mutant) causes severe dwarfism and mental retardation....
Researchers have identified a gene in humans that (when mutant) causes severe dwarfism and mental retardation. This disorder is inherited in an autosomal recessive manner, and the mutant allele is known to be a loss-of-function mutation. The same gene has been found on mice, although a mutant version of the gene has not been discovered in mice. To develop drugs and an effective therapy to treat this disorder, it would be extremely useful to have a mouse model of the...
A gene point mutation that converts the sequence of the codon and therefore converts the encoded...
A gene point mutation that converts the sequence of the codon and therefore converts the encoded amino acid to a stop codon: missense mutation frameshift mutation silent mutation nonsense mutation A mouse gene was identified and determined to be required for formation of heart muscle. A gene with a similar sequence was identified in the human genome. What experiment could scientists do to determine if the mouse and human genes have similar functions? The scientist could place the mutant mouse...
During the course of normal human development, the muscle myosin protein becomes expressed in muscle cells...
During the course of normal human development, the muscle myosin protein becomes expressed in muscle cells but not in non-muscle cells, such as liver cells. Based on this information and your knowledge about biology, select true or false for each of the following statements. a) T/F This expression pattern could result from the muscle myosin gene being present in muscle cells but not in liver cells. b) T/F This expression pattern could result from the regulatory sequence of the muscle...
A “knock-out” of the cyclin-cdk inhibitor p19 was generated in mice. What this means is that...
A “knock-out” of the cyclin-cdk inhibitor p19 was generated in mice. What this means is that the gene for p19 was functionally removed. As such, the mouse was p19-/- or genetically negative for p19 and none of its cells have the p19 protein being made. They also removed the cdk4 (cyclin dependent kinase-4) in some of the mice. On a tissue level, tumors were formed in the pituitary anterior lobe, and other tissues. What would you expect to happen to...
Assume that tail length in mice is a quantitative trait involving two genes, each with 2...
Assume that tail length in mice is a quantitative trait involving two genes, each with 2 alleles. One allele at each gene contributes to long tails, the other allele at each gene does not (small tails). The genes are located on different autosomes. Mice with 0 contributing alleles have tails that are 4 cm in length; mice with tails with 4 contributing alleles are 12 cm in length. Determine the phenotypic ratio from an F2 from a true breeding parent...
2. You've identified a mutant allele for a new gene in mice that causes muscle hypertrophy...
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Could you help with any of these ? and provide an explanation so I'll understand? thank...
Could you help with any of these ? and provide an explanation
so I'll understand? thank you so much
Circle all that apply 1) A patient has inherited two defective genes for TAP2 (remember the case study from before) Which of the following are true? (circle all that apply): - The patient will have a scarcity of CD4+ T helper cells -MHC class I molecules will not be expressed to any extent on the patient's cells -MHC class II molecules...
Please answer 2-5 2. Consider a gene with a particular function. Mutation X and mutation Y...
Please answer 2-5
2. Consider a gene with a particular function. Mutation X and mutation Y cach cause defects in the function of the encoded protein, yet a gene containing both mutations X and Y encodes a protein that works even better than the original protein. The odds are exceedingly small that a single mutational event will generate both mutations X and Y. Explain a simple way that an organism with a mutant gene containing both mutations X and Y...
You clone a gene in starfish which in other, similar embryos appears to be necessary (i.e....
You clone a gene in starfish which in other, similar embryos appears to be necessary (i.e. animals completely lacking it are not viable) only before midblastula transition. What experiment could you do to show that this gene product is present in very early starfish embryos? Describe any controls that would be important. If you had a starfish that were heterozygous for this mutation and you fertilized oocytes from a +/- female with sperm from a +/- male, what would you...
2. You've identified a mutant allele for a new gene in mice that causes muscle hypertrophy You've named the gene Mh, so the wild-type allele is Mh, while the big-muscle mutant allele you've designated as Mh89, You believe this gene is involved in muscle growth and development, but you haven't been able to isolate the protein yet. You also do not know exactly where the mutation is in the gene, but you do know that the mRNA transcript of the...
Could you help with any of these ? and provide an explanation
so I'll understand? thank you so much
Circle all that apply 1) A patient has inherited two defective genes for TAP2 (remember the case study from before) Which of the following are true? (circle all that apply): - The patient will have a scarcity of CD4+ T helper cells -MHC class I molecules will not be expressed to any extent on the patient's cells -MHC class II molecules...
Please answer 2-5
2. Consider a gene with a particular function. Mutation X and mutation Y cach cause defects in the function of the encoded protein, yet a gene containing both mutations X and Y encodes a protein that works even better than the original protein. The odds are exceedingly small that a single mutational event will generate both mutations X and Y. Explain a simple way that an organism with a mutant gene containing both mutations X and Y...
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