Exam One Terms

Question 1

chromosomal theory of inheritance

Answer 1

chromosome behavior involves segregation, independent assortment, and occasionally, linkage.

Question 2

sex linkage

Answer 2

phenotypic expression of an allele depends on gender

Question 3

autosome

Answer 3

any chromosome that is not a sex chromosome

Question 4

reciprocal cross

Answer 4

a pair of crosses between a male of one strain and a female of another, and vice versa.

Question 5

hemizygous

Answer 5

only one copy of a gene or DNA sequence is present in diploid cells

males having XY

Question 6

pedigree analysis

Answer 6

process of interpretation of information displayed as a family tree

Question 7

X-linked recessive

Answer 7

• NOT passed father to son
• more common in males
• skip generations

Question 8

X-linked dominant

Answer 8

• affected father passes trait to all daughters
• NOT passed from father to son
• does NOT skip generations
• if het, 1/2 mother’s oppspring affected

Question 9

Y-linked

Answer 9

-only males affected

Question 10

autosomal recessive

Answer 10

• skip generations
• present mating between relatives
• if both parents carries 1/4 offspring affected

Question 11

autosomal dominant

Answer 11

• does not skip generations

- 1/2 offspring affected