DNA, Genes & Genetics MCQs with Answers

Reduction division is _?

• A.Meiosis I
• B.Meiosis II
• C.Mitosis
• D.Cytokinesis

The artificial manipulation, medication and recombination of DNA is called?

• A.Hybridization
• B.Gene splicing
• C.Cloning
• D.Genetic engineering

A cross between F1 hybrids with either of the parents is called _?

• A.Test cross
• B.Back cross
• C.Reciprocal cross
• D.Monohybrid cross

Which term best describes an organism's physical characteristic?

• A.Genotype
• B.Phenotype
• C.Allele
• D.Trait

Organisms encode their genes in long strands of _?

• A.RNA
• B.Carbohydrate
• C.Protein
• D.DNA

A plant with heterozygous alleles for height is?

• A.Homozygous
• B.Recessive
• C.Purebred
• D.Hybrid

Which is true for an X linked dominant trait?

• A.The trait skips generations and appears only in males
• B.Only male offspring of the affected father will be affected
• C.All offspring of the affected mother will be affected regardless of sex
• D.All female offspring of the affected father will be affected

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.

• A.Individuals
• B.Species
• C.Populations
• D.Communities

Chromosomes, gene, and are the basis of heredity.

• A.Nucleus
• B.RNA
• C.Protein
• D.DNA

The phenomena of gene linkage rejects the concept of?

• A.Law of segregation
• B.Law of independent assortment
• C.Law of dominance
• D.Law of multiple alleles