Simple Genetics

What percentage of peas will be homozygous?

• 10%

• 30%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

The physical traits that are present in an organism.

• Physical Features
• Genotype
• Phenotype
• Personality

Tags

NGSS.MS-LS4-4

One cat carries heterozygous, long-haired traits (Ss), and its mate carries homozygous short-haired traits (ss). Use a Punnett square to determine the probability of one of their offspring having long hair.

• 100%
• 75%
• 50%
• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

One flower is homozygous red (RR) and it is crossed with a homozygous white (rr) plant. Use a Punnett square to determine the probability of one of their offspring having a red color.

• 100%
• 75%
• 50%
• 25%

Tags

NGSS.HS-LS3-1

Long ears (E) are dominant over short ears (e).  What's the long eared parent's genotype?

• EE
• Ee
• ee
• can't tell

Tags

NGSS.HS-LS3-1

A plant with a genotype of Rr is  

• homozygous dominant
• homozygous recessive
• heterozygous

If a phenotype expresses a recessive trait, then the genotype is

• homozygous dominant
• homozygous recessive
• heterozygous

Which of the following is the genotype for a homozygous recessive trait?

• gg
• Gg
• GG

What % of the offspring in the Punnet square are heterozygous?

• 25%
• 50%
• 75%
• 100%

Tags

NGSS.HS-LS3-3

What type of letters are used to show a trait is dominant?

• capital
• lowercase