Assertion: Sexual mode of reproduction produces variation.
Reason: Gametes are produced only by mitotic division which involves crossing over between homologous pairs of chromosomes.

Both assertion and reason are true and the reason is the correct explanation of the assertion.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both assertion and reason are true but reason is not the correct explanation of the assertion.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Assertion is true statement and reason is false statement.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Both assertion and reason are false statements.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Assertion is true statement and reason is false statement.
The sexual mode of reproduction involves the copying of the genetic material (DNA) and each time the genetic material gets replicated, it causes genetic variations. Gametes or germ cells are produced through meiosis, which involves crossing over between the homologous pair of chromosomes, which also causes genetic variation.

Suggest Corrections

Similar questions

Q. Which of the following statement is correct.

Statement I: Asexual reproduction involves fusion of gametes.
Statement II: Asexually produced offspring are genetically identical.
Statement III: Asexual reproduction occurs in unfavorable condition only.

Q. Mention whether the following statements are True or False. Give reason in support of your answer. [5 MARKS]
(a) As you grow from childhood to adulthood, your skin cells divide only to replace such cells that are lost from the surface.
(b) The unfertilized human egg has half the number of chromosomes of the body cells.
(c) Nuclear membrane in a mitotically dividing cell remains intact up to the metaphase and disappears only in telophase.
(d) Mitotic cell division can be a mode of reproduction.
(e) Crossing-over between chromatids can occur only between homologous chromosomes.

Mention whether the following statements are true (T) or false (F). Give reason in support of your answer.
(a) As you grow from childhood to adulthood, your skin cells divide only to replace such cells that are lost from the surface. (T/F)
(b) The unfertilised human egg has half the number of chromosomes of the body cells. (T/F)
(c) Nuclear membrane in a mitotically dividing cell remains intact up to the metaphase and disappears only in the telophase. (T/F)
(d) Mitotic cell division can be a mode of reproduction. (T/F)
(e) Crossing-over between chromatids can occur only between homologous chromosomes. (T/F)

Q. Assertion :Meiosis-I is called reductional division in which crossing over occur between homologous chromosomes and as end product each cell receives one set of chromosomes. Reason: Meiosis II is same as Mitosis.

Q. Assertion :Crossing over leads to recombination of genetic material on the two chromosomes. Reason: Crossing over is the exchange of genetic material between two homologous chromosomes.

Join BYJU'S Learning Program

Assertion: Sexual mode of reproduction produces variation. Reason: Gametes are produced only by mitotic division which involves crossing over between homologous pairs of chromosomes.

Assertion: Sexual mode of reproduction produces variation.
Reason: Gametes are produced only by mitotic division which involves crossing over between homologous pairs of chromosomes.