Middle School Genetics Review

The genotype is the ______________.

• physical appearance
• Genetic makeup
• Alleles gained from one parent

The phenotype is the _______________.

• physical appearance of an organism
• Genetic makeup 
• Alleles acquired from a specific parent.

B=Blonde Hair b=Brown Hair
If a person was BB they would have

• Blonde Hair
• Brown Hair

G = green, g = yellow
The genotype for a yellow plant is...

• GG
• Gg
• gg
• all of the choices result in yellow

How many alleles does a child get from each parent for each trait?

• 1

• 2

• 3

• 4

having two of the same genes for the trait (sometimes called purebred).

• homozygous
• hetrozygous
• protein
• chromosome

having two different genes for a trait (sometimes called hybrid).

• protein
• homozygous
• heterozygous
• genotype

What is the percentage of offspring that have green pods?

• 100%
• 75%
• 50%
• 25%

In this punnett square, which is the dominant trait?
The B stands for bud.

• purple flower bud
• white flower bud
• dominant
• recessive

In plants, tall (T) is dominant to short (t). Perform the following cross: Tt x Tt. What is the probability of producing a short plant?

• 0%
• 25%
• 50%
• 75%