Define other sex determination systems,besides xy system, Biology

Assignment Help:

Besides the XY system are there other sex determination systems?

A few animals have a sex determination system different from the XY system such as the X0 system is the sex determination system of many insects; in this system the females are XX and the males have only one X chromosome (a conditioned represented by X0).

In some fishes, in birds, and in lepidopterae (butterflies) insects the sex determination is made by the ZW system; in this system females are ZW and males are ZZ.

In a different system, the haploid-diploid sex determination system, one of the sexes is represented by the fertilized diploid individual and the individual of the opposite sex is formed by parthenogenesis, being haploid (it occurs in bees and other insects).

 


Related Discussions:- Define other sex determination systems,besides xy system

Explain the numerical aperture, Explain the Numerical Aperture? Numeric...

Explain the Numerical Aperture? Numerical aperture is a characteristic of each lens and is printed on the lens. It can be defined as a function of the diameter of the objective

Determine by nutritive muscular cell?, Determine by nutritive muscular cell...

Determine by nutritive muscular cell? The cells which form the gastrodermis lining the inner cavity of cnidarians. They carry out two functions: First is to absorb and digest f

Explain some do's and don'ts when working in laboratory, Explain some Do's ...

Explain some Do's and Don'ts when working in Laboratory? 1) Always wear a lab coat when working a laboratory. 2) Ensure that no harm is caused to yourself or the people work

Define tests of cardiovascular endurance, Define Tests of Cardiovascular E...

Define Tests of Cardiovascular Endurance? Cardiovascular endurance or aerobic fitness is the ability to exercise continuously for extended periods without tiring. It can be me

Anticoagulant therapy, Anticoagulant therapy To prevent blood clottin...

Anticoagulant therapy To prevent blood clotting on the valve, patients with prosthetic valves require life long anticoagulant therapy. The patient is put on oral antico

Define glycogenolysis, Define Glycogenolysis Glycogenolysis : degrad...

Define Glycogenolysis Glycogenolysis : degradation of glycogen.

Fisson, what is mean by fisson

what is mean by fisson

Agama lizard, excretory system in agama lizard

excretory system in agama lizard

Explain hazard, Explain Hazard Hazard  :  A  biological, chemical  or...

Explain Hazard Hazard  :  A  biological, chemical  or  physical agent that is reasonably likely  to cause illness or  injury in the absence  of  its control.

Major renal processes that combined produce urine, Q. What are the three ma...

Q. What are the three major renal processes that combined produce urine? Urine is made by the occurrence of three processes in the nephron that are tubular resorption, glomerul

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