Genetics /Heredity Test

Factors that control traits are called

• recessives

• purebreds

• genes

• parents

An organism that has two different alleles for a trait is called

• a factor

• homozygous

• recessive

• heterozygous

A(n) __________ is a different form of a gene found on a chromosome

• allele

• alien

• ally

• antecedent

___, is the passing of traits from parents to offspring

• genome

• genotype

• heredity

• hierarchy

Characteristics such as eye color, hair color, height all represents an organisms ______.

• genotype

• phenotype

• discoveries

• parents

What does a Punnett square show?

• all possible outcomes of a genetic cross

• only the dominant alleles in a genetic cross

• only the recessive alleles in a genetic cross

• all of Mendel's discoveries about genetic crosses

A homozygous black rabbit (BB) is crossed with a homozygous white rabbit (bb), what is the probability that an offspring will have black fur?

• 25%

• 50%

• 75%

• 100%

An organism's genetic makeup is known as its ______

• genotype

• phenotype

• phenoltype

• jenotype

An organism with two identical (same) alleles for a trait is called ______.

• heterozygous

• compound

• mixture

• homozygous

A heterozygous organism has ___ different alleles for a trait.

• 4

• 3

• 2

• 1