Ch.6 Genetics

Question 1

Presence of Y chromosome causes an embryo to develop as a

Answer 1

Male XY

Question 2

Absence of an X chromosome causes an embryo to develop as a

Answer 2

Female XX

Question 3

The genetic makeup of an individual is referred as the

Answer 3

genotype

Question 4

The observable expression of an individuals genotype (physical trait) is

Answer 4

phenotype

Question 5

Define mutation

Answer 5

Spontaneous and permanent change in normal gene structure

Question 6

Explain occurrence risk

Answer 6

Couple hasn’t had children but they are known to be at risk for having a child w/genetic disease

Question 7

Explain recurrence risk

Answer 7

Couple has 1 or more children w/genetic disease

Question 8

Autosomes

Answer 8

control most traits in body (22)

Question 9

Chromosomes

Answer 9

Packages of genes and other DNA in nucleus of cell