Genetics/Heredity/Punnett Square Review

If two alleles for a trait are the same, they are

• Homozygous

• Twins

• Heterozygous

• Common

What is the dominant trait in pea seeds?

• yellow pea seeds

• green pea seeds

• there is no dominant seed

• Jolly green giant

How many chromosomes do humans have?

• 46

• 23

• 96

• 21

• 43

Heterozygous is when...

• the alleles are the same
• the alleles are different
• the alleles are absent
• the alleles are present

The physical traits like eye color that are expressed are known as ____________

• Mutation

• Personality

• Genotype

• Phenotype

passing of genetic traits from parent to offspring.

• heredity

• trait

• gene

• allele

Two parents with brown eyes (Bb) are expecting a baby. What is the chance their baby will have blue eyes?

• 0 %

• 25%

• 50%

• 75%

What is the genotype for a yellow plant? G = green, g = yellow

• GG

• Gg

• gg

• all of the choices result in yellow

Which type of allele only shows its trait when no dominant allele is present?

• hidden allele

• dominant allele

• recessive allele

• present allele

Rohan and Scarlett each have a heterozygous (Tt) tall pea plant. They cross their plants. What describes their offspring?

• 50% tall and 50% short

• 75% tall and 25% short

• 100% short