- 1(current)
Q. No.Match each item in Column-I with one given in Column-II and select the correct match from the codes given:
Codes:
| Column-I [Organism] |
Column-II [Mechanism of sex determination] |
||
| A. | Honey bees | P. | Genic balance |
| B. | Grasshopper | Q. | ZZ-ZW, female heterogamety |
| C. | Birds | R. | XX-XO male heterogamety |
| D. | Fruit fly | S. | Haplo-diploidy |
| A | B | C | D | |
| 1. | Q | P | S | R |
| 2. | R | P | Q | S |
| 3. | P | Q | R | S |
| 4. | S | R | Q | P |
Subtopic: Â Sex Determination |
 89%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
.svg)
.svg)
.svg)
.svg)
Subtopic: Â Sex Determination |Â Sex Determination: Further Considerations |
 77%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
Assertion(A): Human males have autosomes and XY chromosomes.
Reason(R): Females have one set of autosomes and two X chromosomes.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): Females have one set of autosomes and two X chromosomes.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Sex Determination |
Level 3: 35%-60%
Hints
Assertion(A): DNA is transmitted from one generation to the other.
Reason(R): DNA is the carrier of genetic information.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason(R): DNA is the carrier of genetic information.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Sex Determination |
 81%
Level 1: 80%+
Hints
Consider the given two statements:
| Assertion(A): | women are blamed and ill-treated for giving birth to female children. |
| Reason(R): | It is the egg of the woman that decides the gender of the embryo. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Â Sex Determination |
 93%
Level 1: 80%+
Hints
Select the correct statement/s with respect to mechanism of sex determination in Grasshopper.
Choose the correct answer from the options given below:
| A: | It is an example of female heterogamety |
| B: | Male produces two different types of gametes either with or without X chromosomes. |
| C: | Total number of chromosomes (autosomes and sex chromosomes) is same in both males and females. |
| D: | All eggs bear an additional X chromosome besides the autosomes. |
| 1. | (B) and (D) only | 2. | (A), (C) and (D) only |
| 3. | (A) only | 4. | (A) and (C) only |
Subtopic: Â Sex Determination |
 77%
Level 2: 60%+
NEET - 2023
Hints
- 1(current)
Q. No.
© 2026 GoodEd Technologies Pvt. Ltd.