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 14 of 62
- A. 9 : 3 : 1
- B. 3 : 1
- C. 1 : 2 : 1
- D. 9 : 3 : 3 : 1
Explanation: A clear-cut 9:3:3:1 phenotypic ratio was found in F2. The appearance of these new recombinant phenotypes of F2 indicated that some sort of…
Correct answer: 9 : 3 : 3 : 1- A. P1
- B. F1
- C. F3
- D. F2
Explanation: A clear-cut 9:3:3:1 phenotypic ratio was found in F2. The appearance of these new recombinant phenotypes of F2 indicated that some sort of…
Correct answer: F2- A. M
- B. N
- C. MN
- D. None of the above
Explanation: The MNS antigen system is a human blood group system based upon two genes on chromosome 4.
Correct answer: MN- A. All M
- B. All N
- C. All MN
- D. Both M and N
Explanation: If a man of M blood group marries a woman of N blood group, all their children will have MN blood group
Correct answer: All MN- A. Complete dominance
- B. Incomplete dominance
- C. Codominance
- D. Over-dominance
Explanation: The condition wherein a heterozygote produces a phenotype more extreme or better adapted than that of the homozygote.
Correct answer: Over-dominance- A. Bernstein
- B. Landsteiner
- C. Karl Correns
- D. Johannsen
Explanation: Karl Landsteiner is the scientist who discovered the ABO blood group system in the early 20th century.
Correct answer: Landsteiner- A. Carl Correns
- B. Landsteiner
- C. T.H. Morgan
- D. Bernstein
Explanation: Bernstein explained the genetic basis of ABO system in 1925. T
Correct answer: Bernstein- A. Complete dominance
- B. Incomplete dominance
- C. Codominance
- D. Over-dominance
Explanation: Codominance, as it relates to genetics, refers to a type of inheritance in which two versions (alleles) of the same gene are expressed…
Correct answer: Codominance- A. Antibody
- B. Antigen
- C. Albumin
- D. None of the above
Explanation: Antiserum, blood serum that contains specific antibodies against an antigen (foreign agent), such as an infective organism or poisonous…
Correct answer: Antibody- A. Morgan
- B. Bridges
- C. Correns
- D. De Varies
Explanation: One of his coworkers Calvin Bridges, observed an unusual white eye mutant male fly
Correct answer: Bridges- A. Hemophilia
- B. Color-blindness
- C. tfm syndrome
- D. Hypophosphatemic rickets
Explanation: Explanation for this question will be added soon!
Correct answer: Hypophosphatemic rickets- A. B
- B. AB
- C. O
- D. All of the above
Explanation: Group A can donate red blood cells to A's and AB's. Group O can donate red blood cells to anybody. It's the universal donor.
Correct answer: AB- A. A
- B. B
- C. AB
- D. None of the above
Explanation: Those with O positive blood can only receive transfusions from O positive or O negative blood types.
Correct answer: None of the above- A. A
- B. B
- C. AB
- D. All of the above
Explanation: Group AB can donate to other ABs but can receive from all others. Group B can donate red blood cells to B's and AB's.
Correct answer: AB- A. B
- B. AB
- C. O
- D. None of the above
Explanation: It can be only A if both the parents are homozygous for allele A and can be A and O if both the parents are heterozygous for allele A.
Correct answer: O- A. A
- B. B
- C. AB
- D. O
Explanation: There will be a 50% chance that their children would have type AB blood.
Correct answer: O- A. Carl Correns
- B. Landsteiner
- C. T.H. Morgan
- D. Bernstein
Explanation: Landsteiner discovered the ABO blood group system by mixing the red cells and serum of each of his staff.
Correct answer: Landsteiner- A. Rh+
- B. Rh-
- C. Both (A) and (B)
- D. All of the above
Explanation: A person with the Rh positive factor will not make anti-Rh antibodies. Those with Rh negative factor will produce the antibodies.
Correct answer: Rh+- A. 1 : 2
- B. 1 : 1 : 1 : 1
- C. 9 : 3 : 3 : 1
- D. 1 : 1
Explanation: Four types of gametes, i.e., RY, Ry, rY, and ry were formed in equal numbers in a perfect ratio of 1:1: 1:1.
Correct answer: 1 : 1 : 1 : 1- A. 9/16
- B. 3/16
- C. 1/16
- D. 2/16
Explanation: F1 plants gave F2 progenies exhibiting 4 different phenotypes: Round yellow (9), wrinkled yellow (3), round green (3), and wrinkled green…
Correct answer: 3/16