Mendelian Genetics Quiz

What is the total number of chromosomes in a human diploid cell?

• 46

• 69

• 92

• 23

What is an allele?

• A protein

• A chromosome

• A version of a gene

• A type of cell

Why did Mendel choose pea plants for his experiments?

• They self-pollinate

• They have many colors

• They grow quickly

• They are easy to eat

What does the F1 generation refer to in Mendel's experiments?

• The first generation of offspring

• The parental generation

• The second generation of offspring

• The generation with mixed traits

According to the law of dominance, what happens when a dominant allele is present?

• The dominant allele is masked

• Both alleles are expressed equally

• The recessive allele is expressed

• The dominant allele is expressed

What does the law of segregation state about allele separation?

• Alleles are inherited together

• Alleles are always dominant

• Alleles do not affect each other

• Alleles separate during meiosis

What is the purpose of a Punnett square?

• To determine the number of chromosomes

• To predict the probability of inheriting traits

• To identify dominant alleles

• To calculate genetic mutations

In a monohybrid cross, what does a 3:1 phenotypic ratio indicate?

• No expression of traits

• Three dominant traits for every recessive trait

• Three recessive traits for every dominant trait

• Equal expression of both traits

What is a dihybrid cross used for?

• Predicting a single trait

• Predicting two traits simultaneously

• Predicting genetic mutations

• Predicting environmental effects

What is the typical phenotypic ratio for a dihybrid cross between two heterozygous parents?

• 9:3:3:1

• 3:1

• 2:2

• 1:1