REPRODUCTION

REPRODUCTION REVIEW FOR JAMB AND WAEC STUDENTS


Reproduction is the process by which living things give rise to young ones alive, that look and have the same gene as their parents.

Reproduction takes place in both plants and animals.In animals it a complex story which we need to unlock one after the other.The same goes for plants.

Well, reproduction has been my best topic right from high school,maybe because I am the type who love to emphasize on anything related to reproduction.

REPRODUCTION IN ORGANISMS

It is divided into two, which is

1. Sexual reproduction
2. Asexual reproduction

Sexual reproduction:it is the reproduction that involvoes the coming together of the two parents inorder for copulation to take place.

The parents are male and female interms of sex.

This has really led to the continuity of the organism.#

examples of organism that undergoes sexual reproduction are fishes, mammals, reptiles e.t.c

Some organisms are hermaphrodites(they are both male and female).

IMPORTANCE OF SEXUAL REPRODUCTION

Sexual reproduction introduces genetic variation during meiosis and fertilization.During meiosis, new combination of genes occur when:

1. crossing over takes place between the chromatids of homologous chromosomes and

2. Homologous chromosomes separate independently during the first nuclear division
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