Punnett Squares

Which of the following is a phenotype?

• Aa
• red hair
• heterozygous
• DNA

Tags

NGSS.MS-LS4-4

AA and Aa always are expressed as being _______.

• dominant

• recessive

• heterozygous

• homozygous

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

In the punnett square shown, what must the genotype of the missing parent be?

• BB
• Bb
• bb
• Tt

Tags

NGSS.HS-LS3-1

In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?

• rr

• Rr

• RR

• Either RR or Rr

Tags

NGSS.HS-LS3-2

What you see, or the physical appearance is referred to as ______.

• Genotype
• Phenotype
• Homozygous
• Heterozygous

Tags

NGSS.HS-LS3-1

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

• tt
• Tt
• Bb
• TT

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What does heterozygous mean?

• An organism that has the same size alleles for a trait

• An organism that has different sized alleles for a trait

• When neither allele is fully dominant; offspring is a mixture of both

• the different forms of a trait (hair color--> brown, blonde, red

In a heterozygous genotype, the _____ allele takes over in the phenotype.

• recessive
• dominant
• lower case letter
• both 

B = brown fur  b = white fur
In the punnett square, what is the probability for white fur? 

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS4-3