A colourblind man marries a woman, who is homozygous for normal colour vision, the probability of their son being colour blind is ……………….
- ✓0%
- B25%
- C50%
- D100%
Answer: A.
View full solution →Question types
Inheritance and Variation question types
149 questions across 3 question groups — pick any mix to generate a Biology paper with step-by-step answer keys.
149
Questions
3
Question groups
5
Question types
Sample Questions
Inheritance and Variation questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Find the mismatched pair:
- ✓Down’s syndrome = 44 + XY
- BTurner’s syndrome = 44 + XO
- CKlinefelter’s syndrome = 44 + XXY
- DSuper female = 44 + XXX
Answer: A.
View full solution →If the genes are located in a chromosome as p-q-r-s-t, which of the following gene pairs will have least probability of being inherited together ?
- Ap and q
- Br and s
- Cs and t
- ✓p and s
Answer: D.
View full solution →Chromosomal theory of inheritance was proposed by ……………….
- ✓Sutton and Boveri
- BWatson and Crick
- CMiller and Urey
- DOparin and Halden
Answer: A.
View full solution →If the centromere is situated near the end of the chromosome, the chromosome is called ……………….
- AMetacentric
- BAcrocentric
- CSub-Metacentric
- ✓Telocentric
Answer: D.
View full solution →Match the column
| Column i | Column ii |
| (1) 21 trisomy | (a) Turner’s syndrome |
| (2) X-monosomy | (b) Klinefelter’s syndrome |
| (3) Holandric traits | (c) Down’s syndrome |
| (4) Feminized male | (d) Hypertrichosis |
Give one example of complete sex linkage.
Give an example of chromosomal disorder caused due to non-disjunction of autosomes.
What are holandric traits?
What are X-linked genes?
Observe the given pedigree chart and answer the following questions
(a) Identify whether the trait is sex-linked or autosomal.
(b) Give an example of a trait in human beings which shows such a pattern of inheritance.
Explain the chromosomal theory of inheritance.
Distinguish between
Compare X-chromosome and Y-chromosome.
Compare X-chromosome and Y-chromosome.
Long Answer Questions: PKU.
Long Answer Questions
What is linkage? How many linkage groups do occur in human being and maize?
What is linkage? How many linkage groups do occur in human being and maize?
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