Monohybrid Cross

What is the genotype of a hairless guinea pig?

• hh

• Hh

• H

• HH

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What does a recessive allele represent?

• A gene that is heterozygous

• A gene that is dominant

• A gene that will not show up

• A gene that will show up

Tags

NGSS.HS-LS3-1

What is the genotype of a guinea pig with hair?

• HH

• Hh

• hh

• H

Tags

NGSS.HS-LS3-1

What is the meaning of the term 'homozygous'?

• Having a recessive allele

• Having a dominant allele

• Having different genotypes

• Having the same genotype

Tags

NGSS.HS-LS3-2

How many squares are there in a Punnett square for a monohybrid cross?

• 2

• 3

• 4

• 5

Tags

NGSS.HS-LS3-3

What is the genotype ratio of the offspring in a monohybrid cross between two heterozygous guinea pigs?

• 1HH: 1 Hh: 1 hh

• 2HH: 1 Hh: 1 hh

• 2HH: 2 Hh: 1 hh

• 1HH: 2 Hh: 1 hh

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

What is the phenotype of a guinea pig with the genotype Hh?

• Has hair

• Cannot be determined

• Has a dominant allele

• Hairless

Tags

NGSS.HS-LS3-1

What does the phenotype ratio 75% hair, 25% hairless represent?

• The percentage of guinea pigs with a dominant allele

• The percentage of guinea pigs with hair

• The percentage of guinea pigs without hair

• The percentage of guinea pigs with a recessive allele

Tags

NGSS.HS-LS3-3

What are Punnett squares used for?

• To determine the genotype of an organism

• To determine the phenotype of an organism

• To predict the probability of offspring traits

• To determine the dominance of an allele

Tags

NGSS.HS-LS3-3

Are Punnett squares always an exact representation of the offspring?

• No, they are only used for homozygous traits

• Yes, they always predict the exact outcome

• No, they are only probabilities

• Yes, they are always accurate

Tags

NGSS.HS-LS3-3