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The Number of Chromosomes in Parents and Offsprings of a Particular Species Remains Constant Due to : (A) Doubling of Chromosomes After Zygote Formation (B) Halving of Chromosomes During Gamete Formation (C) Doubling of Chromosomes After Gamete Formation (D) Halving of Chromosomes After Gamete Formation - Science

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Question

The number of chromosomes in parents and offsprings of a particular species remains constant due to :
(a) doubling of chromosomes after zygote formation
(b) halving of chromosomes during gamete formation
(c) doubling of chromosomes after gamete formation
(d) halving of chromosomes after gamete formation

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Solution

b) halving of chromosomes during gamete formation

The gametes have half the number of chromosomes. After their fusion, the zygote thus formed has a full set of chromosomes. Therefore, the numbers of chromosomes in parents and offsprings of a particular species remain constant

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Chapter 3: How do Organisms Reproduce? - Exercise 2 [Page 172]

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Lakhmir Singh Biology (Science) [English] Class 10
Chapter 3 How do Organisms Reproduce?
Exercise 2 | Q 76 | Page 172
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