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 41 of 62
- A. Cataract
- B. Leprosy
- C. Blindness
- D. Phenylketonuria
Explanation: The correct option is d) Phenylketonuria. Phenylketonuria (PKU) is a hereditary disease caused by a genetic mutation that affects the…
Correct answer: Phenylketonuria- A. Trait for a albinism is dominant
- B. The albinos have a biochemical to destroy plastids derived from green male
- C. Plastids are inherited from female parent
- D. Green plastids of male must have mutated
Explanation: The correct option is c) Plastids are inherited from the female parent.
Correct answer: Plastids are inherited from female parent- A. ++ : 80 : : ab : 20
- B. ++ : 50 : : ab : 50
- C. ++ : 40 : : ab : 40 : : + a : 10 : : + b : 10
- D. ++ : 30 : : ab : 30 : : + a : 20 : : + b : 20
Explanation: Correct option is C.The combined linkage frequency between the parental combinations ++ and ab is 80%The combined recombination frequency…
Correct answer: ++ : 40 : : ab : 40 : : + a : 10 : : + b : 10- A. Qualitative analysis of data
- B. Observation of distinct inherited traits
- C. His knowledge of biology
- D. Consideration of one character at one time
Explanation: Consideration of one character at one time contributes to the success of Mendel.
Correct answer: Consideration of one character at one time- A. zero
- B. 25%
- C. 50%
- D. 100%.
Explanation: A family of five daughter only is expecting sixth issue. The chance of its beings a son is 50%.
Correct answer: 50%- A. Many alleles for each gene
- B. Two alleles for each gene
- C. Only one allele for each gene in the individual
- D. Only one allele in a gene.
Explanation: Haploids are able to express both recessive and dominant alleles/ mutations because there is only one allele for each gene in the…
Correct answer: Only one allele for each gene in the individual807. Among the following characters, which one was not considered by Mendel in his experiments on pea?
- A. Trichomes-Glandular or non-glandular
- B. Seed-Green or yellow
- C. Pod-Inflated or constricted
- D. Stem-Tall or dwarf
Explanation: Mendel considered the following characters of pea in his experiments:
Correct answer: Trichomes-Glandular or non-glandular- A. (1), (3) and (4) are correct.
- B. (1), (2) and (3) are correct.
- C. (1) and (4) are correct.
- D. (2) and (4) are correct.
Explanation: Sickle-cell anemia is an autosomal recessive genetic disorder. It can be transmitted from parents to the offspring when both partners are…
Correct answer: (1), (2) and (3) are correct.- A. Seed shape
- B. Flower position
- C. Seed colour
- D. Pod length.
Explanation: Mendel considered the following characters of pea in his experiments:
Correct answer: Pod length.810. How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?
- A. Eight
- B. Seven
- C. Five
- D. Six
Explanation: Mendel considered the following characters of pea in his experiments:
Correct answer: Seven- A. Mating between relatives
- B. Unaffected male
- C. Unaffected female
- D. Male affected
Explanation: A record of inheritance of certain genetic traits for two or more generations presented in the form of a diagram or family tree is called…
Correct answer: Mating between relatives812. The alleles are
- A. A pair of genes governing a specific character
- B. Genes Governing eye characters
- C. Multiple forms of genes
- D. Genes present in allosomes
Explanation: Partner of a gene pair is known as allele.
Correct answer: A pair of genes governing a specific character- A. Genotype
- B. Genetics
- C. Phenotype
- D. Gene Pool
Explanation: Genotype is a genetic makeup of organism that controls the expression of a certain trait.
Correct answer: Genotype814. All the genes/alleles found in a breeding population at a given time are colllectively termed as
- A. Genome
- B. Gene pool
- C. Genotype
- D. Karyotype
Explanation: The total aggregate of genes in a population at a given time is called the population's gene pool.
Correct answer: Gene pool- A. It is expressed only in heterozygous combination
- B. It is expressed only in homozygous combination
- C. It is expressed in both homozygous and heterozygous condition
- D. It is expressed only in second generation.
Explanation: As allele that masks the effect of another allele in a pair is called a dominant allele and such a trait is dominant.
Correct answer: It is expressed in both homozygous and heterozygous condition- A. Homozygous
- B. Dominant
- C. Heterozygous
- D. Hermaphrodite
Explanation: When both alleles of a gene pairin an organism are same the organismis is homozygous for that gene pair.
Correct answer: Homozygous- A. Locus
- B. Amplicon
- C. Origin
- D. Filial generation
Explanation: The position of a gene on the chromosome is called its locus.
Correct answer: Locus- A. Gene pool
- B. Genome
- C. Allele pool
- D. Genomic Library
Explanation: The total aggregate of genes in a population at any given time is called the population's gene pool.
Correct answer: Gene pool- A. Locus
- B. Allele
- C. Gene
- D. Kinetochore
Explanation: Genes are actually parts of DNA comprising its basic sequence.
Correct answer: Gene- A. Alleles
- B. Phenotypes
- C. Genotypes
- D. Karyotype
Explanation: The physical appearance of a trait is called phenotype for example, round and wrinkled are phenotypes of seed shape as the shape is a trait.
Correct answer: Phenotypes