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WorksheetsMonohybrids and the Punnett Square
Total questions: 10
Worksheet time: 5mins
What is the genotype of a hairless guinea pig?
HH
Hh
hh
H
What does a recessive allele represent?
A trait that will always show up
A trait that will not usually show up
A dominant gene
A heterozygous genotype
What is the genotype of a guinea pig with hair?
HH
Hh
hh
H
What does the term 'homozygous' mean?
Having the same genotype
Having different genotypes
Having a dominant allele
Having a recessive allele
How many squares are there in a Punnett square for a monohybrid cross?
2
3
4
5
What is the genotype ratio of the offspring in a monohybrid cross between two heterozygous guinea pigs?
1HH: 2 Hh: 1 hh
1HH: 1 Hh: 1 hh
2HH: 1 Hh: 1 hh
2HH: 2 Hh: 1 hh
What is the phenotype of a guinea pig with the genotype Hh?
Hairless
Has hair
Cannot be determined
Depends on the other parent's genotype
What does the term 'phenotype' refer to?
The genetic makeup of an organism
The physical traits of an organism
The probability of a trait showing up
The dominance of an allele
What is the probability of a hairless guinea pig in a monohybrid cross between two heterozygous guinea pigs?
0%
25%
50%
75%
What is a characteristic of Punnett squares?
They are predictions
They always give accurate results
They determine the genotype of an organism
They are used for monohybrid crosses only
