For a single complete-dominance trait, what fraction of offspring from Aa × Aa is expected to be aa?
A) One half B) Three quarters C) All of them D) One quarter Answer: D Explanation: Each parent can pass […]
Biology, Genetics & Inheritance
Genetics & Inheritance
Biology, Genetics & Inheritance
How does proofreading by DNA polymerase improve replication accuracy?
A) It changes every base into uracil B) It destroys both template strands C) It removes some incorrectly paired new […]
Biology, Genetics & Inheritance
How many pairs of autosomes are in a typical human body cell?
A) 1 pair B) 22 pairs C) 23 pairs D) 46 pairs Answer: B Explanation: Humans typically have 22 pairs […]
Biology, Genetics & Inheritance
Identify the term for a mating analyzed for two genes.
A) Pleiotropy B) Dihybrid cross C) Nondisjunction D) Phenotype Answer: B Explanation: Dihybrid cross refers to a mating analyzed for […]
Biology, Genetics & Inheritance
Identify the term for a trait influenced by multiple genes.
A) Aneuploidy B) Polygenic inheritance C) Allele D) Dihybrid cross Answer: B Explanation: Polygenic inheritance refers to a trait influenced […]
Biology, Genetics & Inheritance
Identify the term for an individual with two different alleles at a given locus.
A) Independent assortment B) Heterozygote C) Sex-linked inheritance D) Karyotype Answer: B Explanation: Heterozygote refers to an individual with two […]
Biology, Genetics & Inheritance
Identify the term for exchange of DNA between homologous chromosomes during meiosis.
A) Carrier B) Crossing over C) Dominant allele D) Incomplete dominance Answer: B Explanation: Crossing over refers to exchange of […]
Biology, Genetics & Inheritance
Identify the term for inheritance in which a heterozygote has an intermediate phenotype.
A) Linkage B) Incomplete dominance C) Pedigree D) Heterozygote Answer: B Explanation: Incomplete dominance refers to inheritance in which a […]
Biology, Genetics & Inheritance
Identify the term for presence of one extra copy of a particular chromosome.
A) Locus B) Trisomy C) Testcross D) Polygenic inheritance Answer: B Explanation: Trisomy refers to presence of one extra copy […]
Biology, Genetics & Inheritance
Identify the term for the observable expression of an organism’s traits.
A) Monohybrid cross B) Phenotype C) Multiple alleles D) Recombination frequency Answer: B Explanation: Phenotype refers to the observable expression […]