Biology Chapter Variation and Genetics/ Inheritance MCQs

If you are searching for the Biology Chapter Variation and Genetics/ Inheritance MCQs then you are in the right place. Variation & Genetics/Inheritance is also one of the major portions of the Biology MDCAT test syllabus. This portion comprises upon four chapters: Growth and Development, chromosomes and DNA, Cell Cycle and Variation, and Genetics. The main content of this chapter is Mendelian inheritance, gene control and expression, sex determination, genetic linkage, cell division, and genetic disorders. You will become able to explain different terms like locus, allele, gene, dominant, recessive, genotype, homozygous, heterozygous, mutation, epistasis, RH faction, polygenic, and many others. There will be different questions like the law of segregation and the law of independent assortment, monohybrid, dihybrid and crosses, and testcross. Students will also learn about sex linkage in humans, DNA replication, meselson, Stahl experiment and the mechanism of gene expression. So, check the important MCQs in the quiz form below.

Biology Chapter Variation and Genetics/ Inheritance MCQs

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Biology Chapter Genetics/Inheritance

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1. The two members of a gene pair are called.

A) Gene pool

B) Traits

C) None of these

D) Alleles

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2. Which of the following crosses best demonstrates the law of segregation?

A) aa x aa

B) Aa x aa

C) Aa x Aa

D) AA x aa

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3. The plant used by Mendel in his experiments was

A) None of these

B) Pisum Satirum

C) Triticum

D) Oryza Sativa

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4. The number of linkage groups in man is:

A) 46

B) 92

C) 23

D) 02

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5. The position of a gene on a chromosome is called:

A) Locus

B) Focus

C) Alleles

D) None of these

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6. Baldness is a:

A) Sex limited trait

B) Sex related trait

C) None of these

D) Sex influenced trait

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7. A couple has two children. One child has blood type A and the other has blood type O. What are all the possible blood types of the parents?

A) There is only possibility, one parent has type A and the other has type O

B) There is only one possibility, both parents have type A blood

C) Either both have type A or one has type A and the other has type O or one has A and the other has type B

D) There is only one possibility, both parents have type O blood

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8. A red flower is crossed with a white flower and all the offspring are pink. Which law of inheritance does this follow?

A) Incomplete Dominance

B) Dominance

C) Co-dominance

D) Segregation

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9. Two parents each of blood groups A, have a daughter of blood group O. What is the probability that their next child has blood group O?

A) 0.125

B) 0.25

C) 0.75

D) 0.50

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10. A hybrid red flower (Rr) is crossed with a white flower. What %age of the offspring will be red?

A) 75%

B) 50%

C) 25%

D) 0%

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11. Chances for a son or daughter in human birth are:

A) 1:3 Between Son and Daughter

B) 3:1 Between Son and Daughter

C) 1:1 Between Son and Daughter

D) None of these

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12. A farmer planted 1,000 seeds of corn. The offspring were 544 tall with yellow seeds, 188 tall with green seeds, 183 short with yellow seeds and 64 short with green seeds. What were the genotypes of the parents?

A) TYy TYY

B) ttyy tyy

C) TTYY tyy

D) TYy tyy

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13. A man with hemophilia marries a woman who has normal hemoglobin and is not carrier? Which of the following is true?

A) All the girls will be carriers

B) All the girls will have the disease

C) All the boys will have the disease

D) None of their children will have the disease nor will they be carriers

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14. The cross of a phenotypically dominant individual with its recessive is called?

A) None of these

B) F1Cross

C) Monohybrid Cross

D) Test Cross

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15. A man of blood group A marries a woman of blood group B and they have one child. Which one of the following statements about the child's blood is correct?

A) It could be any of the groups A, B. AB, O

B) It could be group AB only

C) It could be group A or group B only

D) It could be group A only

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16. Which is true about blood type?

A) Type AB is dominant over both A and B

B) Type B is dominant over type A

C) Type A is dominant over type B

D) Types A and B are dominant over type O

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17. If a man is colour-blind and his wife is a carrier, which of the following is true?

A) All the boys will be carriers

B) All the girls will be carriers

C) Each girl has a 50% chance of being colour-blind

D) No girl will be colour-blind because girls cannot be colour-blind

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18. How many different kinds of gametes will be formed by an individual, who is heterozygous for four gene pairs?

A) 8

B) 16

C) 30

D) 20

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19. It is the form of appearance of a trait.

A) Genotype

B) Pleiotropy

C) Phenotype

D) None of these

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20. The chance of an event to occur is called:

A) Epiphysis

B) Paleography

C) Probability

D) None of these

Your score is

Biology Chapter Variation and Genetics/ Inheritance MCQs

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