Genetics Quiz

Which of the following is homozygous dominant?

• Aa

• A

• AA

• aa

Which of the following alleles is homozygous recessive?

• TT

• tt

• Tt

• t

Genotype refers to the ...

• physical expression of the genes

• refers to the exact pairing of alleles

• how an organism will appear

• whether an allele is dominant or recessive

Tags

NGSS.HS-LS1-1

The exact genetic makeup of an organism, such as RR, Tt, PP is its?

• genotype

• trait

• dominance

• phenotype

Tt is considered a ...

• homozygous dominant

• homozygous recessive

• none of these

• heterozygous

Genotype or Phenotype: Black hair

• Genotype

• Phenotype

Tags

NGSS.HS-LS3-1

If "T" is the allele for tall and "t" is the allele for short, then Tt would produce?

• not enough info

• medium

• short

• 
  tall

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

T - tall and t = short
In the punnett square below, what belongs in the missing square

• 
  tt

• Bb

• TT

• Tt

Tags

NGSS.HS-LS3-1

What is the probability that the offspring will express the dominant trait?

• 75%

• 100%

• 25%

• 50%

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-3

What is the definition of Phenotype?

• The diagram that shows all the chromosomes of an individual

• The combination of alleles that control that an individual has for a particular trait

• How many genes on one chromosome

• How a trait is expressed (what it looks like or what it does)

Tags

NGSS.HS-LS3-1