Question

Question 1

Hardy and Weinberg mathematically proved that as time goes by in a population:

Select one:

a. The frequency of homozygotes will increase.

b. The proportion of all genotypes will remain constant.

c. Dominant alleles will increase to a 3:1 ratio.

d. Recessive alleles will increase over time.

e. Heterozygotes will increase.

Question 2

Why is it easy to measure allele frequencies in a co-dominant allele system?

Select one:

a. Phenotypes are equivalent to genotypes.

b. Such systems are rare.

c. The majority of alleles are carried by heterozygotes

d. Most alleles are present in homozygous condition.

e. They are typically present in a 1:2:1 ratio in all populations.

Question 3

The insertion of a retroviral genome into the human genome can cause harm if:

Select one:

a. it fails to integrate into the host DNA and is recycled by the cell

b. it inserts itself into a VNTR region

c. it inserts itself into a pseudogene

d. it inserts itself into an Alu sequence

e. it inserts itself into the locus of a proto-oncogene

Question 4

Germline gene therapy could potentially correct a genetic defect in a(n):

Select one:

a. Affected individual and all of his or her descendants

b. Affected individual and his or her offspring only

c. the epigenome of a person who experienced trauma as a child

d. Affected individual only

e. Parent of an affected child

Question 5

Which of the following statements is NOT true about the FokI enzyme:

Select one:

a. It is a specific type of endonuclease

b. It is a bacterial enzyme

c. It introduces double-stranded breaks in the DNA

d. It has a DNA-binding domain

e. It is an example of an exonuclease

Question 6

What is the function of the "spacers" found in highly repetitive regions of bacterial genomes?

Select one:

a. They are un-transcribed sequences that help keep the genome organized.

b. They are fragments of various species of bacterial DNA that are used to adapt to a changing environment.

c. They are palindromic sequences that allow Cas proteins to bind to the DNA.

d. They are short sequences of viral DNA that allow the bacteria to defend against re-infection.

e. They code for proteins involved in DNA

Answer 1

genotypes will will remain As per flow b) the poroportion of constant the Hardy-Weinberg principle the allele of genotype frequencies in a population remat will remain constant oren generations in the absence of any evolutionary forces ie. their is no mutation, ranciom mating, no gene & selection : are equivalent to genotypes In a codominant allele system say: A Aa the them, then a) Phenotypes lets aan white Red Aas Pink all 3 gencrepes have a unique phenotype, measurement of allele pequencies becomes easy.

Felt great to answer. Good luck!