Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

Tags

NGSS.HS-LS3-1

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

Tags

NGSS.HS-LS3-1

Which of the following is homozygous dominant?

• Yy
• Y
• yy
• YY

Tags

NGSS.HS-LS3-1

Which of the following is homozygous recessive?

• Tt
• tt
• TT
• T

Tags

NGSS.HS-LS3-1

An organism’s physical appearance, or visible traits

• Recessive
• Genotype
• Phenotype
• Heterozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

An organism’s genetic makeup, or allele combinations

• Recessive
• Genotype
• Phenotype
• Heterozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What are the possible genotypes for this cross?

• TT = 25% Tt= 50% tt=25%
• all tall
• TT= 75% tt = 25%
• Tt = 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

In guinea pigs, the allele for short hair is dominant over the allele for long hair.
B = short 
b = long
What would the cross be for two heterozygous guinea pigs?

• BB X BB
• BB X Bb
• Bb X Bb
• bb X bb

Tags

NGSS.HS-LS3-1

Smooth seeds are dominant over wrinkled seeds.
What is the genotype ratio for the following cross?
Nn X NN

• NN = 100%, Nn = 0%, nn = 0%
• NN = 50%, Nn = 25%, nn = 25%
• NN = 50%, Nn = 50%, nn = 0%
• NN = 25%, Nn = 50%, nn = 25%

Tags

NGSS.HS-LS3-3

One of the two forms of a gene is called a(n)

• genotype
• allele
• hybrid
• trait

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2