Ap bio unit 5 multi choice

What is the term for alternative versions of a gene?

• Alleles

• Phenotypes

• Genotypes

• Mutations

• Loci

In Mendel's experiments with pea plants, what is the ratio of phenotypes in the F2 generation of a monohybrid cross?

• 3:1

• 1:2:1

• 9:3:3:1

• 1:1

• 2:1

Which type of inheritance results in the blending of parental traits in the offspring?

• Incomplete dominance

• Codominance

• Polygenic inheritance

• Pleiotropy

• Complete dominance

Which of the following statements about sex-linked traits is true?

• They are always passed from father to son.

• They are located on autosomes.

• Females are more commonly affected than males.

• They are inherited according to Mendelian principles.

• They are never influenced by the environment.

What is the term for an organism's genetic makeup?

• Phenotype

• Genotype

• Allele

• Dominant

• Recessive

What is the probability of a homozygous dominant offspring resulting from a cross between two heterozygous parents for a single gene trait?

• 0%

• 25%

• 50%

• 75%

• 100%

Which of the following statements about Mendel's law of segregation is correct?

• It states that genes located on different chromosomes are inherited independently of each other.

• It explains the inheritance of traits controlled by multiple genes.

• It describes the distribution of alleles into gametes during meiosis.

• It predicts the outcomes of crosses involving two or more traits.

• It explains the blending of traits in offspring.

What is the term for the physical expression of an organism's genes?

• Phenotype

• Genotype

• Homozygous

• Heterozygous

• Allele

Which of the following Punnett square ratios represents a dihybrid cross between two heterozygous individuals?

• 1:2:1

• 9:3:3:1

• 3:1

• 1:1:1:1

• 2:1

What is the term for a gene that is always expressed, regardless of the presence of another allele?

• Recessive

• Dominant

• Homozygous

• Heterozygous

• Carrier