Chapter 12 Quiz

Different forms of a gene are called

• Hybrids

• dominant factors

• alleles

• recessive factors

Organisms that have two identical alleles for a particular trait are said to be

• hybrid

• heterozygous

• homozygous

• dominant

A Punnett square is used to determine the

• probable outcome of a cross

• actual outcome of a cross

• result of incomplete dominance

• result of meiosis

The physical characteristics of an organism are called its

• genetics

• heredity

• phenotype

• genotype

What is the probability of flipping a coin twice and getting two heads?

• 1

• 1/2

• 1/4

• 3/4

A situation in which a gene has more than two alleles is known as

• complete dominance

• codominance

• polygenic dominance

• multiple alleles

A pink-flowered Mirabilis plant (Rr) is crossed with a white-flowered Mirabilis (rr). What is the chance that a seed from the cross will produce a red flowered plant (RR)?

• 0

• 1/4

• 1/2

• 1

The illustration below represents which stage of meiosis?

• Prophase 1

• Metaphase 1

• Anaphase 1

• Telephase 1

Unlike mitosis, meiosis in mammals results in the formation of

• one haploid gamete

• three haploid gametes

• four diploid gamets

• four haploid gametes

Gregor Mendel studied genetics using what type of organism?

• Fruit fly

• Pea Plant

• Chickens

• Human