Chapter 4.3

Question 1

Genotype

Answer 1

All the genetic information that one specific individual has inherited

Question 2

Phenotype

Answer 2

The sum of an individual’s physical characteristics at one particular time

Question 3

Epigenetics

Answer 3

The study of factors that affect gene expression without making any changes in the nucleotide sequence of the genes themselves

Question 4

Methylation

Answer 4

A chemical modification of DNA that does not affect the nucleotide sequence of a gene but makes that gene less likely to be expressed