What are twins, Biology

Assignment Help:

What are twins? Genetically what are the two types of twins that can be generated?

Twins are simultaneously generated (within the mother's uterus) offspring. Twins classify according to zygosity as monozygotic or as dizygotic twins.

Monozygotic twins, also called as identical twins, are those originated from one single fertilized ovum (therefore from one single zygote); monozygotic twins are genetically identical, i.e., they have identical genotypes and are necessarily of the same sex. Dizygotic twins, also called as fraternal twins, are those generated from two different ova fecundated by two dissimilar sperm cells; so they are not genetically identical and they are not necessarily of the similar sex.

 


Related Discussions:- What are twins

Recovery of by-products: coal, Recovery of tar: the coke oven gas coming o...

Recovery of tar: the coke oven gas coming out from ovens is passed through a tower where liquid ammonia is sprayed. The tar and dust are removed and then recovered. Recover of

Enumerate the various physical agents of sterilization, Q. Enumerate the va...

Q. Enumerate the various physical agents of sterilization, and list the advantages of moist heat in sterilization process Various physical agents of sterilization are Sun

Hollow restorations for re-lining, A hollow restoration may be fabricated b...

A hollow restoration may be fabricated based on the original form determined by the diagnostic preview. This restoration can be re-lined on completion of the surgical phase of impl

Explain pr murmur characterstic and graham steel murmur, Explain PR Murmur ...

Explain PR Murmur characterstic and graham steel murmur? PR Murmur Characteristic: Blowing, decrescendo murmur heard loudest in 2nd and 3rd left intercostal space with increa

Explain broad spectrum antibiotics?, Board spectrum antibiotics are effecti...

Board spectrum antibiotics are effective against several diff. types of harmful bacteria ex: tetracycline

True about microbial metabolism, which of the following is most likely to b...

which of the following is most likely to be true of microbial metabolism? 1)Acetyl-CoA is converted directly into 2 ATP 2)The energy from 2 ATP is necessary to drive the electron t

Zoology, classification mollusca

classification mollusca

Explain carrageenan, Carrageenan Carrageenan is a collective term for p...

Carrageenan Carrageenan is a collective term for polysaccharides prepared by alkaline extraction (and modification) from red seaweed (Rhodophycae). Carrageenan is a sulfated ga

What is haccp control, HACCP Control :  a) To manage the conditions of an o...

HACCP Control :  a) To manage the conditions of an operation  to maintain compliance with established criteria. b)  The state where correct procedures are being followed  and  c

Potassium, Potassium, Calcium, Iron and Magnesium - Microorganism? Thes...

Potassium, Calcium, Iron and Magnesium - Microorganism? These are supplied by inorganic salts and exist in the cell as cations. These perform various functions in the cell like

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