Characteristics of gametes, Biology

Characteristics of Gametes

Following are some general characteristics of gametes:

1. The female gametes are usually laden with food material, the yolk, while the male gametes are without food reserve.

2. The gametes of opposite sexes are generally unequal in size - the ones which are generally larger are the eggs or the female gametes, and the others that are smaller are called the spermatozoa (or sperms) or just the male gametes.

3. The female gametes are generally nonmotile or immobile (cannot move about actively) while the male ones are motile.

4. The sex cells or gametes which fertilize to generate a new individual usually come from different parents (males and females). This provides for the combination of genes from the two parents, and the offspring, due to such chance combinations of genes, may be better equipped (adapted) for life.

5. The gametes generally cannot develop singly. Instead, they must undergo syngamy involving fertilization in which the male and the female gametes fuse together to , form the zygote.

6. The zygote is still a single cell which has to go through a process of cell division and cell differentiation to gradually acquire the adult form and structure.

7. Both the types of gametes possess half the quantity of the genetic material (DNA), i.e. half the number of chromosomes of the parent. This is expressed by saying that the gametes are haploid (n) possessing only one out of each pair of chromosomes of the species, whereas the parents which produced them are diploid (2n).

Posted Date: 2/5/2013 12:55:49 AM | Location : United States

Related Discussions:- Characteristics of gametes, Assignment Help, Ask Question on Characteristics of gametes, Get Answer, Expert's Help, Characteristics of gametes Discussions

Write discussion on Characteristics of gametes
Your posts are moderated
Related Questions
Q. Discuss the advantages of implant supported maxillo-facial prosthesis. Maxillofacial Prosthodontics involves the prosthetic rehabilitation of patients with congenital or acq

Q. Classify biomaterials and list some examples? Biologic classification is based on tissue response and systemic toxicity effects of the implant and is divided into three clas

Homologous structures are the body parts in different organisms which have similar bones and similar arrangements of the blood vessels, muscles, and nerves and go through similar

Q. Rapport Building of Counselling process of diabetic patient? 1. Rapport Building - Introduce yourself to the counsellee. - Get the introduction of counsellee. - Sit

Explain What are analogies for mitochondria? Ans) Well, as we know, the mitochondria are the producers of lots of a cell's energy and the nucleolus makes ribosome's.

What are Tannins? Long known for their inhibitory effects on iron absorption, recent research indicates that tannins do have beneficial effects. Tannins are compounds of high m

Classification: There were many similarities between things or phenomena which led to their classification. The first classifications were in terms of beings (the living), th

Explain Viruses and their classification? Viruses are living organisms. Viruses are not living organisms. No, the above is not a misprint! In fact, viruses defy the normal c

Regulation of Ammonia Assimilation Heterotrophic bacteria like Escherichia coli and Klebsiella aerogenes induce the operation of GS-glutamate synthase pathway of ammonia assim

Chlorophyll Chlorophyll is the porphyrin most widely used as a natural colourant. Its widespread occurrence in photosynthetic  tissue and its breakdown character have prompted