Question

4) Choose the best answer.

People who have only one recessive allele for a disease are called ___.

carriers

polygenic trait

plasmid

pleiotropy

5) Choose the best answer.

If two carriers for the same genetic disorder have a child, what is the probability that the child will have the disorder?









6) Choose the best answer.

A(n) ___ can be caused by a single abnormal gene from either parent.

intermediate expression

incomplete penetrance

recessive genetic disorder

dominant genetic disorder

7) Choose the best answer.

___ occurs when both parents are carriers and each contributes an allele to the embryo.

Intermediate expression

Incomplete penetrance

Dominant genetic disorder

Recessive genetic disorder

8) Identify the two types of genetic disease.

teratogenic problems

single gene defects

multifactorial problems

genetic disorders

chromosomal disorders

Answer 1

4) carriers

5) 25% (1 in 4)

6) dominant genetic disorder

7) Recessive genetic disorder

8) single gene defects and chromosomal disorders