Module 4.1

Question 0

Dominant

Answer 0

Gene that shows a strong effect in either the homozygous or heterozygous condition

Question 1

Recessive

Answer 1

One that shows effects only in the homozygous condition

Question 2

Heterozygous

Answer 2

Having two unlike genes for a given trait

Question 3

Homozygous

Answer 3

Having two identical genes for a given characteristic

Question 4

Ribonucleic acid

RNA

Answer 4

A single-strand chemical

Base order= adenine, guanine, cytosine, and uracil

Question 5

Deoxyribonucleic acid

DNA

Answer 5

Double-stranded molecule that is part of the chromosomes

Bases= adenine, guanine, cytosine, and thymine

Question 6

Chromosomes

Answer 6

Strands of genes

Question 7

Genes

Answer 7

Units of heredity that maintain their structural identity from one generation to another

Question 8

Sex-linked genes

Answer 8

Genes on either the X or Y chromosome

Female = XX

Male = XY

Question 9

Autosomal genes

Answer 9

All chromosomes other that X and Y

Question 10

Sex-limited genes

Answer 10

A gene that exerts its effects primarily in one sex because of activation by androgens or estrogens, although members of both sexes may have the gene

Present in both sexes but active mainly in one sex