Assertion :The first meiosis division are known as heterotypic division. Reason: The first division of meiosis result in reduced number of chromosomes.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
The meiosis I is the reduction division in which the chromosome number is reduced to half. Thus, two haploid cells are produced after meiosis I. The meiosis II is the equational division in which the chromosome number remains the same as in the daughter cells produced after meiosis I. Thus a total of four haploid cells are produced after meiosis II. In such division, the first division is known as heterotypic division. The number of chromosomes is reduced by half during this division.
So, the correct answer is option A.

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Similar questions

Given below are assertion and reason. Point out if both are true with reason being correct explanation (A), both true but reason isnot correct explanation (B) , assertion true but reason is wrong (C), both are wrong (D) .

Assertion: Phase of cell division is also known as formative phase.

Reason: In formative phase new cells are produced from pre–existing cells through meiosis.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Assertion (A) Rate constant determined from Arrhenius equation are fairly accurate for simple as well as complex molecules.

Reason (R) Reactant molecules undergo chemical change irrespective of their orientation during collision.

Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

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