Sexual reproduction in animals, Biology

Sexual Reproduction

All metazoans, if or if not capable of propagating asexually, produce special cells termed as gametes. The gametes may be either male gametes or sperms or female gametes (ova). Syngamy follows throughout which a sperm fertilizes an ovum producing a zygote. The zygote develops and finally produces an adult. During syngamy, there is doubling of chromosomes; the zygote and its derivative cells are diploid. To prevent repeated doubling of chromosomes, there is meiosis or reduction division during the production of gametes. In this procedure chromosome number is reduced to half (haploid number). The cycle is repeated, and the chromosome number is maintained.

Posted Date: 2/5/2013 12:51:26 AM | Location : United States







Related Discussions:- Sexual reproduction in animals, Assignment Help, Ask Question on Sexual reproduction in animals, Get Answer, Expert's Help, Sexual reproduction in animals Discussions

Write discussion on Sexual reproduction in animals
Your posts are moderated
Related Questions
Explain the Role in Insulin Formation? You are aware that insulin receptors are present in many cells with their concentration being highest in adipocytes (cells present in adi

a recent topic for my developmental biology assignment


Improvement of Soil Aeration Soil organisms greatly improve soil structure and facilitate aeration. Root decay leaves the soil riddled with channels, and the burrowing of worm

The dietary principles underlying the enteric diet  include: High calorie High protein High carbohydrate Moderate fat High  fluid Low fibre and soft diet

Which of the following serves as a sensor, or as part of a sensor, that functions in a negative feedback system? A. CaSRs (Calcium-Sensing Receptors) located in the plasma memb

Processes in Succession - Ecology Whether succession is primary or secondary, in terrestrial or aquatic ecosystems, the basic processes involved in succession are similar. The

A haploid cell contains: A.one half of a complete set of chromosomes B.several complete sets of chromosomes C.the correct number of chromosomes D.two complete sets of chromosomes E


Explain the Direct Microscopic Counts (DMC) The process includes making a smear of food sample on a microscope slide followed by staining with an appropriate dye and viewing an