Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332



Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem

Sexual reproduction ___ .

  1. a. requires formation of gametes by meiosis
  2. b. produces offspring identical in their traits
  3. c. occurs only in vertebrates
  4. d. all of the above

Summary Introduction

Concept introduction: Reproduction is the process by which the organisms propagate their species by the union of the male and females gametes in case of sexual reproduction or by other asexual means. Sexual reproduction produces variation that helps to adapt to the changing environment.


Reasons for the correct statement:

The body cells are of two types, somatic cells and sex cells. These sex cells are also known as reproductive cells that undergo meiosis. Meiosis is the reduction division at the end of which only half of the number of chromosomes is segregated into two daughter cells. These daughter cells undergo changes to form the sperms, the male gametes, and ova, the female gametes. These gametes unite and form the zygote where the chromosomes of both the gametes undergo recombination and form the diploid zygote. The diploid zygote develops into a new organism. The recombination results in a variation.

Option a. is given as “requires formation of gametes by meiosis”.

As sexual reproduction is the process where the male and female gamete produced as a result of meiosis unite to form the zygote, the correct answer is option a.

Reasons for the incorrect statements:

Option b...

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