Question 1:

Which of the following best describes Mendel's Law of Segregation?

Explanation: Mendel's Law of Segregation states that alleles segregate during gamete formation, meaning that each gamete carries only one allele for each gene. Therefore, option D is correct.

Question 2:

In a monohybrid cross between two heterozygous individuals (Aa x Aa), what is the expected genotypic ratio of the offspring?

Explanation: In a monohybrid cross between two heterozygous individuals, the expected genotypic ratio of the offspring is 1:2:1, representing homozygous dominant, heterozygous, and homozygous recessive genotypes, respectively. Therefore, option C is correct.

Question 3:

In a dihybrid cross between two heterozygous individuals (AaBb x AaBb), what is the expected phenotypic ratio of the offspring?

Explanation: In a dihybrid cross between two heterozygous individuals, the expected phenotypic ratio of the offspring is 9:3:3:1, representing the phenotypes resulting from different combinations of dominant and recessive alleles. Therefore, option C is correct.

Question 4:

A Punnett square is used to:

Explanation: A Punnett square is a graphical representation used to determine the possible combinations of alleles in offspring resulting from a specific cross. Therefore, option C is correct.

Question 5:

If two individuals with the genotype Aa cross, what percentage of their offspring is expected to be homozygous recessive (aa)?

Explanation: If two individuals with the genotype Aa cross, the expected genotype ratio of their offspring is 1:2:1 (AA:Aa:aa). Therefore, 25% of the offspring are expected to be homozygous recessive (aa). Hence, option B is correct.