Monohybrid Cross Quiz

What is a monohybrid cross primarily used to study?

• Inheritance of environmental traits

• Inheritance of two characteristics

• Inheritance of one characteristic

• Inheritance of multiple characteristics

Who developed the Punnett square method?

• Gregor Mendel

• Charles Darwin

• James Watson

• Reginald Punnett

In a Punnett square, what does a capital letter represent?

• A mutated allele

• A hybrid allele

• A dominant allele

• A recessive allele

What is the genotype of a heterozygous yellow pea pod?

• yY

• Yy

• yy

• YY

What is the phenotypic ratio of offspring when crossing two heterozygous yellow pea plants?

• 2 yellow: 2 green

• 3 yellow: 1 green

• 4 yellow: 0 green

• 1 yellow: 3 green

What is the genotypic ratio when crossing two heterozygous yellow pea plants?

• 3 YY: 0 Yy: 1 yy

• 1 YY: 1 Yy: 2 yy

• 2 YY: 1 Yy: 1 yy

• 1 YY: 2 Yy: 1 yy

What does the term 'homozygous' refer to in genetics?

• Having three alleles

• Having two different alleles

• Having two identical alleles

• Having no alleles

In a monohybrid cross, what is the expected phenotypic ratio for a dominant and recessive trait?

• 2:2

• 3:1

• 4:0

• 1:1

What is the purpose of using a Punnett square in genetic studies?

• To measure the size of an organism

• To predict the genotypes of offspring

• To calculate the speed of genetic mutations

• To determine the age of an organism

Which of the following is a characteristic studied by Mendel in pea plants?

• Pod color

• Stem thickness

• Leaf size

• Root length