Monohybrid Cross Practice

Based on the accomplished Punnet square, what is the genotypic ratio?

• 1:1:2:1

• 1:2:1

• 2:2

• 1:1

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In the Punnett square shown, if all four types of offspring are produced by the parents, how many of them will have dimple?

• 3 dimpled, 1 non-dimpled

• 2 dimpled, 2 non-dimpled

• 1 dimpled, 3 non-dimpled

• 1 dimpled, 3 non-dimpled

Tags

NGSS.MS-LS3-2

How many traits can you cross using a monohybrid cross?

• three

• two

• one

• none

Which is a homozygous recessive genotype?

• GG

• GGG

• gg

• Gg

Which refers to the offspring resulting from a cross between homozygous parents with two contrasting traits?

• crossbred

• hybrid

• multiple allele

• purebred

In garden pea plant, long stem is dominant over short stem. How many percent will be short stem garden pea plants that may appear in the first filial generation if both parents are heterozygous for the given trait?

• 25% short stem pea plant

• 50% short stem pea plant

• 75% short stem pea plant

• 100% short stem pea plant

Tags

NGSS.MS-LS3-2

Which pair of alleles represents a recessive trait?

• BB

• Dd

• Hh

• ss

Which pair of letters represents a pure line dominant trait?

• CC

• Ee

• Gg

• tt

In the Punnett square, how many H/h alleles does a baby guinea pig inherit from the mother? Answer using numbers.

Assuming that having hair for guinea pigs follows Mendelian inheritance, where the H dominant allele codes for hair and h codes for a lack of hair (hairless).

Genotype: (Note, this particular Guinea Pig is Purebred)

• HH

• Hh

• hh

• hH