Biology S2 Final Review

What does a homozygous dominant genotype look like?

• aa

• Aa

• AA

• AB

What does a heterozygous genotype look like?

• aa

• Aa

• AA

• AB

Which is the specific sequence of DNA that determines a trait?

• Gene

• Allele

• Trait

• Chromosome

The most important job of DNA is to...

• store oxygen for the body

• store water in plant cells

• store genetic information

• produce energy

A substance such as tobacco that can cause a genetic change is called a(n)...

• antigen

• mutagen

• collagen

• polyploidy

Humans and monkeys are related because...

• humans and monkeys evolved from the same ancestor

• humans evolved from monkeys

• monkeys evolved from humans

• humans and monkeys share no common ancestry

Mutations can be helpful, harmful, or silent.

• True

• False

Artificial selection is the process where humans decide to breed plants and animals for desirable traits.

• True

• False

RNA is a double-stranded nucleic acid.

• True

• False

What is the genetic makeup of an organism called?

• Phenotype

• Chromotype

• Genotype

• Allelotype