Genetics and Inheritance Concepts

A HETEROZYGOUS individual would have the genotype:

• Hh

• hh

• HH

• Hi

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In pea plants, tall (T) plant alleles are dominant to short (t) plant alleles. If two tall plants (each with the genotype Tt) are crossed, what is the probability that the cross would result in a short pea plant?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The letters on the TOP AND SIDE of a punnett square represent ______________.

• The combination of alleles in offspring.
• The possible alleles given by the parents following meiosis.
• The genotype and phenotype of offspring.
• The results of genetic mutations in offspring.

Tags

NGSS.HS-LS3-1

Different traits are inherited independently of each other

• Law of independent assortment

• Genetics law

In pea plants, the trait for tall stems is dominant over the trait for short stems. If two heterozygous tall plants are crossed, what percentage of the offspring would be expected to have the same phenotype as the parents?

• 100%
• 75%
• 50%
• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In a genetic cross between two heterozygous pea plants (Tt), what is the expected genotypic ratio of the offspring?

• 1:2:1

• 1:1

• 3:1

• 2:1

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Which of the following represents a homozygous recessive genotype?

• TT

• Tt

• Tt

• tt

What is the probability of obtaining a homozygous dominant offspring when two heterozygous individuals are crossed?

• 75%

• 50%

• 25%

• 100%

Tags

NGSS.HS-LS3-3