Top 150+ Solved Heredity and Variation MCQ Questions Answer
Q. State the cause of Philadelphia syndrome
a. Deletion from the long arm of chromosome number 20
b. Duplication in long arm of chromosome number 20
c. Deletion from the long arm of chromosome number 22
d. Deletion from the short arm of chromosome number 22
e. cessive
Q. which statement is incorrect regarding gene mutation
a. Mutations may be gradual or they may not be induced.
b. Mutation is an evolutionary agent
c. Any gene can undergo mutation
d. Mutated gene is harmful to the individual
e. cessive
Q. What happens to excessive phenylalanine accumulation in the blood of phenylketonuria patient ?
a. Get deposited on synovial membrane
b. excreted in urine
c. Get deposited in storage organs
d. All of the above
e. cessive
Q. Which is very common method to study Human Karyotype ?
a. Blood culture method
b. Tissue culture method
c. Pedigree method
d. Statistical method
e. cessive
Q. Name the disorder caused by trisomy of sex chromosomes.
a. Down’s syndrome
b. Kline felter’s syndrome
c. Turner’s syndrome
d. Edward’s syndrome
e. cessive
Q. Match the following :-_ans_key_Column I Column II_ans_key_1. Genetics a. Father of genetics_ans_key_2. W.Bateson b. To become_ans_key_3. "Gen" c. Coined the term genetics_ans_key_4. Gregor Johann Mendel d. Study of heredity
a. (1 - d) (2 - c) (3 - a) (4 - b)
b. (1 - d) (2 - a) (3 - c) (4 - b)
c. (1 -
d. (2 - C) (3 - b) (4 - a)
e. cessive
Q. Match the following_ans_key_Column I Column II_ans_key_1. Johansen a. Coined the term gene_ans_key_2. Mendel b. Crossing over in drosophila_ans_key_3. T. H. Morgan c. Linkage in lathyrus odoratus_ans_key_4. Bateson & punnett d. Law of segregation
a. (1 - d) (2 - c) (3 -
b. (4 - a) (B) (1 - a) (2 - d) (3 - b) (4 - c)
c. (1 - c) (2 -
d. (3 - b) (4 - a) (D) (1 - b) (2 - d) (3 - a) (4 - c)
e. cessive
Q. Match the following_ans_key_Column I Column II_ans_key_1. Single gene inheritance a. 1 : 1: 1 : 1_ans_key_2. Double gene inheritance b. 1 : 2 : 1_ans_key_3. Test cross c. 3 : 1_ans_key_4. Incomplete dominance d. 9 : 3 : 3 : 1
a. (1 - c) (2 - d) (3 - a) (4 - b)
b. (1 - d) (2 - c) (3 - b) (4 - a)
c. (1 - a) (2 - b) (3 -
d. (4 - c)
e. cessive
Q. Match the following_ans_key_Column I Column II_ans_key_1. Co- dominance a. More then two optional forms of a gene_ans_key_2. Polygenic inheritance b. Multiple effect of a single gene_ans_key_3. Multiple alleles c. Quantitative inheritance_ans_key_4. Pleiotropism d. Both gene express their expression independently
a. (1 - d) (2 - c) (3 - a) (4 - b)
b. (1 - a) (2 -
c. (3 - b) (4 -
d. cessive
Q. What will be expected blood groups in the off spring when there is a cross between AB blood group mother and heterozygous B blood group father ?
a. 25 % AB group 25 % A group 50 % B group
b. 50 % AB group 25 % A group 25 % B group
c. 25% AB group 50% O group 25 % A group
d. 25 % O group 50 % B group 25 % A group
e. cessive
Q. Which law of Mendel can be explained on chromosomal basis of inheritance ?
a. Law of dominance
b. Law of segregation
c. Law of independent assortment
d. All the above
e. cessive
Q. The value of X/A is given in column A and sex of the fly is written in column B._ans_key_Match the following :-_ans_key_Column I Column II_ans_key_1. 1 (
a. Normal Male_ans_key_2. 1.5
b. super male Sterile_ans_key_3. 0.67
c. inter sex_ans_key_4. 0.33
d. super Female sterile_ans_key_5. 0.5 (e) Normal Female
e. cessive
Q. Out of the marked portions X, Y and Z, in which region the male worm develop ?
a. X
b. Y
c. Z
d. All the three regions
e. cessive
Q. Which kind of structural abnormality is seen in the above chromosome?
a. Terminal deletion
b. Duplication (Tandem)
c. Duplication (Reverse)
d. Inversion
e. cessive
Q. Name the abnormality seen in chromosome number - 2
a. Interstitial Deletion
b. Terminal Deletion
c. Tandem Duplication
d. Reverse Duplicaton
e. cessive