DNA, Genes & Genetics MCQs with Answers

The formula calculating the frequency of genotypes and alleles in a population gene pool is known as?

• A.Hardy-Weinberg Equation
• B.Mendelian Ratio
• C.Darwinian Fitness Formula
• D.Lamarckian Inheritance Principle

Total number of linkage groups in a normal human is

• A.22
• B.44
• C.46
• D.23

If both the parents donate same factors of a character, it is called _?

• A.Homozygous
• B.Heterozygous
• C.Hemizygous
• D.Phenotype

Which of the following amino acids has single codon?

• A.Methionine
• B.Tryptophan
• C.Leucine
• D.Glycine

Name the biomolecule essential for information storage and transmission within cells?

• A.Proteins
• B.Nucleic acids
• C.Carbohydrates
• D.Lipids

Name the test used to assess the genotype of F₁ individuals?

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

The process of producing several identical copies of a gene sequence is referred as _?

• A.Gene Mapping
• B.Gene Splicing
• C.Gene Therapy
• D.Gene Cloning

In the F₂ generation of a dihybrid cross between yellow, round seeded and green, wrinkled seeded pea plants, 17 out of 254 seeds were green and wrinkled. The other seeds were: Yellow and round, Green and round, Yellow and wrinkled. What do these results indicate?

• A.Green and wrinkled are both recessive characters
• B.Yellow and round are both recessive characters
• C.Green is dominant while wrinkled is recessive
• D.All characters assort independently without dominance

Allele A and B control a trait in which the allele A masks the expression of allele B. In such case, allele A is called ?

• A.Dominant allele
• B.Recessive allele
• C.Codominant allele
• D.Lethal allele

Which of the following is an acceptable nitrogen base composition for double stranded DNA?

• A.35% A, 35% U, 15% C, 15% G
• B.29% A, 29% T, 21% C, 21% G
• C.25% A, 25% T, 25% C, 25% G
• D.31% A, 31% T, 19% C, 19% G