Sexual reproduction in animals, Biology

Assignment Help:

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.


Related Discussions:- Sexual reproduction in animals

importance of water in the body, Importance of water in the body Wa...

Importance of water in the body Water is the most essential constituent of life. Life cannot exist without water. About 90% of water is present in protoplasm  Water

What do you mean by platyhelminthes, Q. Compared to platyhelminthes which p...

Q. Compared to platyhelminthes which physiological problems have the cylindrical body of nematodes brought? How was that problem solved? The cylindrical shape of nematodes made

Radiographic evaluation - criteria for endosteal implants, Radiographic Eva...

Radiographic Evaluation - criteria for endosteal implants Surgical and interventional imaging involves imaging the patient  during and immediately after surgery and during the

Which does not contain a guanidinium group, Which of the following does NOT...

Which of the following does NOT contain a guanidinium group Select one: a. Urea b. arginine c. creatine d. guanidinium ion

Explain antioxidants, Antioxidants  Antioxidants are the substances tha...

Antioxidants  Antioxidants are the substances that can delay onset, or  slow the rate of oxidation of autoxidizable materials. By virtue of this property,  they provide protect

Significance of the uterine glycogen- producing glands, Q. What is the sign...

Q. What is the significance of the uterine glycogen- producing glands? The uterine glands produce glycogen that able to degrade into glucose to nourish the embryo before the co

Fishes- regeneration in vertebrates, Fishes- Regeneration in Vertebrates ...

Fishes- Regeneration in Vertebrates Several different parts of the fish body will re-grow. Plucked scales are promptly replaced by new ones and amputated gill filaments can re

Isospora, ciclo vital de la isospora belli

ciclo vital de la isospora belli

Arteral supply of the heart, The branches of the left coronary artery are  ...

The branches of the left coronary artery are  anterio interventricular artery (AIV artery) and circumflex artery which is considered to be the continuation of the left coronary art

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd