Rr, RR, or rr are examples of a _______.

• genotype

• phenotype

• hybrid

• purebred

The physical appearance of an organism is known as a _________ Ex: blue eyes, red hair

• dominant allele

• recessive allele

• genotype

• phenotype

Organisms that have (2) different alleles for a trait are said to be ______ (ex: Tt)

• homozygous

• heterozygous

• complete dominance

• incomplete dominance

Cross a male gerbil with tan fur (Tt) with a female gerbil with tan fur (Tt). Both of the parent genotypes are ___________.

• homozygous dominant

• hybrid

• homozygous recessive

• purebred

A purebred tall (TT) pea plant is crossed with a purebred short (tt) pea plant. All the offspring are tall. What is the most likely genotype of the offspring? ______ (use scratch paper to figure it out

• Tt

• tt

• TT

• none are correct

The diploid number (2n) of chromosomes in a certain species is 20. How many chromosomes would be found in a bone cell of the same fish?

• 10

• 20

• 40

• 15

Tall, short, red hair, dark skin, freckles are all examples of ______________.

• genotypes

• phenotypes

• dominant traits

• recessive traits

Using the Monohybrid Cross Punnett square, what is the ratio for green pea pods?

• 1:4

• 1:2

• 3:4

• 4:4

Using the punnett square, the parent genotypes are described as __________?

• homozygous

• purebred

• heterzygous

• none are correct

Using the Punnett square, the father's genes are heterozygous (Bb) and the mother's genes are _____?

• homozygous dominant

• hybrid

• homozygous recessive

• codominant