Free Inheritance MCQs with Answers
1,238 Inheritance MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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Read the Inheritance notesFree MDCAT chapter notes with key terms1,238 questions · page 49 of 62
- A. Lipoprotein
- B. Nucleoprotein
- C. Glycoprotein
- D. Glycolipids
Explanation: Glycoproteins develop particular receptor sites on cell surfaces.
Correct answer: Glycoprotein- A. H
- B. IA
- C. IB
- D. IA or IB
Explanation: As gene H will produce a receptor site for antigen A or/and B on the surface of RBCs.
Correct answer: H- A. Antigen A and B in blood
- B. Antigen A and B in body
- C. Antigen A and B on RBC
- D. Antigen A and B in lymph
Explanation: Bombay phenotype is actually a person having AB antigen but laking the substance H which is required for insersion of antigens on the…
Correct answer: Antigen A and B on RBC- A. IA IA, HH
- B. IA IB, hh
- C. IA IB,Hh
- D. ii, HH
Explanation: Substance H is required for the insertion of AB antigen on the surface of RBCs and for that purpose at least on H (dominant) is required…
Correct answer: IA IB, hh965. A phenomenon of gene interaction in which a gene interferes in the effect of another gene is called:
- A. Pleiotropy
- B. Epistasis
- C. Over dominance
- D. Co dominance
Explanation: The phenomenon of gene interaction in which a gene interferes with or modifies the expression of another gene is called "epistasis."…
Correct answer: Epistasis- A. Different alleles of the same gene
- B. Different genes occupying different loci
- C. Same gene of the different loci
- D. Different genes occupying same locus
Explanation: Epistasis is an interaction between different genes at different loci (specific positions on a chromosome).
Correct answer: Different genes occupying different loci- A. Sex cells
- B. Gametes
- C. Gamete mother cells
- D. Somatic cells
Explanation: As they have no role in sexual reproduction.
Correct answer: Somatic cells- A. Somatic cells
- B. Non reproductive cells
- C. Germ line cells
- D. Skin cells
Explanation: As germ line cells are involved in sexual reproduction
Correct answer: Germ line cells- A. Chromosomal aberration of number and structure
- B. Point mutation and gene mutation
- C. Chromosomal aberration of number and point mutation
- D. Chromosomal aberration and point mutation
Explanation: Chromosomal aberrations occur at chromosome level while point mutations occur at nucleotide level.
Correct answer: Chromosomal aberration and point mutation- A. IA
- B. IB
- C. IA and IB both
- D. D
Explanation: These are alleles of same gene located on some locus.
Correct answer: IA and IB both- A. IAIA
- B. IAi
- C. IAIA or IAi
- D. ii
Explanation: As 'i' is recessive to IA a person with iIA will be heterozygous for blood type A. A person with IAIA will be homozygous for blood type-A.
Correct answer: IAIA or IAi- A. A
- B. B
- C. AB
- D. O
Explanation: As there will be neither antigen A nor antigen B.
Correct answer: O- A. Puberty
- B. Old stage
- C. Death
- D. Eighties
Explanation: As the antigens persist throughout life.
Correct answer: Death- A. Anti A antibodies
- B. Anti B antibodies
- C. Anti A and Anti B antibodies
- D. No antibody
Explanation: A person having blood group 'B' will lack antigen 'A' and thus produce antibodies against 'A'.
Correct answer: Anti A antibodies- A. Does not cause agglutination in the recipient
- B. Cause agglutination in the recipient
- C. Does not cause agglutination in the donor
- D. Cause agglutination in the donor
Explanation: It means donor blood either matches to that of recipient or it lacks any antibodies i.e O type. (a universal donor).
Correct answer: Does not cause agglutination in the recipient- A. Carry O2
- B. Pass through fine capillaries
- C. Carry CO2
- D. Carry food and wastes
Explanation: It is life threatening situation as blood vessels will be choked by it.
Correct answer: Pass through fine capillaries- A. Screened for compatibility
- B. Cross matched for compatibility
- C. Filtered for compatibility
- D. Centrifuged for compatibility
Explanation: Cross matching is carried out to check the compatibility whereas screening is carried out to ensure that it is infection free.
Correct answer: Cross matched for compatibility- A. Recipient are destroyed
- B. Either recipient or donor or both are destroyed
- C. Donor are destroyed
- D. No body are destroyed
Explanation: It is consequence of incompatibility which means either donor's blood have antibodies against that of recipient or vice versa or both have…
Correct answer: Either recipient or donor or both are destroyed- A. A recipient
- B. B recipient
- C. AB recipient
- D. A and AB recipient
Explanation: AB is universal recipient and A is same blood group.
Correct answer: A and AB recipient- A. B recipient
- B. A recipient
- C. AB recipient
- D. B and AB recipient
Explanation: A B blood lacks any antibody, thus is can be transfused to only 'AB' recipient because any other blood type will have antibodies against…
Correct answer: AB recipient