Explain sexual reproduction, Biology

Assignment Help:

Explain Sexual Reproduction ?

In most higher organisms, replication occurs by sexual reproduction. Sexual reproduction begins with a process called meiosis. The products of meiosis become eggs, sperm, and other specialized cells, and contain only a haploid set of chromosomes. Fusion of a sperm and an egg produces a zygote, restoring the original chromosome number when DNA from the two nuclei combine.

These resulting diploid zygote cells then undergo the cell division through mitosis to produce a multicellular individual. All human cells and those of most eukaryotes not involved with sexual reproduction contain two sets of of chromosomes, one derived from the female parent and the other derived from the male.

During the process of meiosis, exchange of genetic material, or genetic recombination occurs. Genetic recombination leads to diversity in species and an increase in likelihood that new generations will survive in a changing environment.

 


Related Discussions:- Explain sexual reproduction

Diarrhoea, Diarrhoea   Diarrhoea refers to frequent passage of loose wa...

Diarrhoea   Diarrhoea refers to frequent passage of loose watery stools. Acute diarrhoea often called as acute gastroenteritis  is particularly a leading cause of mortality in

Enumerate the absolute and relative contraindications, Enumerate the absolu...

Enumerate the absolute and relative contraindications. 1. Absolute contraindications - Recent myocardial infarction - Valvular prosthesis - Severe renal disea

Nutrition, list and explain the modes of nutrition

list and explain the modes of nutrition

Eye - conjuctiva, CONJUNCTI V A - Ectodermal in origin. Formed by epi...

CONJUNCTI V A - Ectodermal in origin. Formed by epidermis. It is thin, transparent covers cornea. Made up of stratified epithelium. It has 2 parts - (i) Ocular conjunct

What is chemical disinfection, Q. What is Chemical disinfection? Chemic...

Q. What is Chemical disinfection? Chemicals are added to waste to kill or inactivate the pathogens it contains, this treatment usually results in disinfection rather than steri

Determine the biological diversity of an ecosystem, Is monoculture a system...

Is monoculture a system that contributes to great biological diversity of an ecosystem? Monoculture means that in a large area a single crop (only single species of plant) is c

Key skills for healthy coping, Key skills for healthy coping are: - Pr...

Key skills for healthy coping are: - Problem-solving and goal setting skills: Finding a problem and challenges, thinking of alternatives for dealing with them, testing those

Animal genetics and breeding, POULTRY BREEDING Poultry breeding has acq...

POULTRY BREEDING Poultry breeding has acquired pre-eminence over all other domesticated livestock enterprises. Production level of layer and broiler type of chicken touched spe

Explain the objective of cardiac rehabilitation, Explain the OBJECTIVE of C...

Explain the OBJECTIVE of Cardiac Rehabilitation ? After going through this unit, you should be able to: 1 identifies the eligible candidate for cardiac rehabilitation and be

Biology, a_molecule can be dissolved in water solution but a _molecule does...

a_molecule can be dissolved in water solution but a _molecule does not mix with water

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