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

Etiology of diarrhoea, Etiology   The causes of diarrhoea can be classi...

Etiology   The causes of diarrhoea can be classified as follows:  i)  Infectious causes   Viral  : Rota virus, Norwalk and allied viruses, Enterovirus, Influenza virus,

Zoology, About phylum platy helmenthus

About phylum platy helmenthus

Nutrition, The oxidation of sugar in the cell of higher organisms takes pla...

The oxidation of sugar in the cell of higher organisms takes place in the ?

Following statement true for prokaryotic or eukaryotic, Following statement...

Following statement true for prokaryotic or eukaryotic? They use deoxyribonucleic acid as their major information storage molecule

Explain the structural and functional changes in cancer , Identify and brie...

Identify and briefly explain the structural and functional changes that occur in the large bowel when colorectal cancer develops.

Determine the factors that affecting food choice, Determine the Factors tha...

Determine the Factors that Affecting Food Choice? As a dietician, it is necessary to understand how our food choices are affected. Every day we make food choices which influenc

Reproduction, write about asexual reproduction in mucor

write about asexual reproduction in mucor

What is genomics , We are living in an unprecedented age of biological ...

We are living in an unprecedented age of biological discovery and the application of biological knowledge.   Programmed DNA sequencing delivered, in the year of  2001 over the 2.6

Skeletal system - skull, SKULL- Present in head region. It is suppor...

SKULL- Present in head region. It is supported on the top of vertebral column. It is made up of the hardest and denest bones in the human body. It consists of cranium

Explain the membrane equilibria, Explain the Membrane Equilibria? A sem...

Explain the Membrane Equilibria? A semipermeable membrane used to separate two liquid phases can, in principle, be permeable to certain species and impermeable to others. A mem

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