Homework Answers

expression of protein in cells

a)is regulated by genes

b)is regulated by nutrients 

c)is regulated by histone modification

d)is regulated by a combination of factors 

when a DNA mutation occurs in somatic cells of an adult and is not repaired, 

a)the persona's children may inherit the mutation

b)the person may develop cancer 

c)the persona's children will inherit the mutation 

d)the persona's genes will be dysregulated in that cell

Vitamin A as a gene regulator 

a)can cause birth defects when taken in excess before and during pregnancy

b)can cause birth defects when not absorbed enough before and during pregnancy 

c)can cause a reduced immune reaction making infections worse when not absorbed enough by children and adults 

d)all of the above 

a single nucleotide substitution in the DNA code is most likely to

a)change one single amino acid in a protein

b)change a series of amino acids in a protein 

c)lead to the addition of an amino acid to a protein

d)lead to different histone modifications at that site

4)when entire parts of chromosomes change location to another chromosome

a)disease can result only if this happens in germline cells

b)disease can result if this happens in white blood cells

c)the embryo will die before birth 

d)the resulting child cannot have children

2)biological children of a person's with no genetic disease they know of 

a)cannot have genetic diseases

b)can only have genetic diseases if they get new mutations 

c)can have a genetic disease that their great-great grandmother had