Genetics and Punnett Squares

An organism's genotype describes its __________.

• genetic makeup

• physical appearance

An organism's phenotype describes its __________.

• genetic makeup

• physical appearance

B = brown fur b = white fur

In the punnett square, what is the probability for white fur?

• 0%

• 25%

• 50%

• 75%

Which of the following is homozygous recessive?

• rr
• AA
• TT
• Ff

Fill in the Yellow Box

• AA

• Aa

• aa

Tags

NGSS.MS-LS3-2

What is the probability of obtaining a heterozygous genotype from a cross between two heterozygous parents?

• 75%

• 50%

• 25%

• 0%

Tags

NGSS.HS-LS3-3

Which of the following represents a homozygous dominant genotype?

• aa

• BB

• Cc

• dd

If T = tall and t = short, what is the phenotype of a Tt plant?

• short

• tall

A​ (a)   is the physical, observable trait.

A ​ (b)   describes the types of alleles or DNA an organism has for their trait.

• Phenotype
• Genotype
• Allele

Select the boxes in the Punnett Square where you would find heterozygous offspring.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2