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

What is a photosynthesis, Photosynthesis is a process used by plants and ot...

Photosynthesis is a process used by plants and other organisms to change the light energy captured from the sun into chemical energy which can be beneficial to fuel the organism's

Inter specific incompatibility, Inter specific Incompatibility This t...

Inter specific Incompatibility This type of incompatibility is characterized by the prevention of fusion of gametes between members of different species. The incompatibility

Explain gastro-intestinal system, Explain G.I. (Gastro-Intestinal) system? ...

Explain G.I. (Gastro-Intestinal) system? A. Skeletal muscles directly control the movement of substances at the entrance of the G.I. system. B. Smooth muscles control the mo

Acid rain, What direct or indirect effect is acid rain thought to have on m...

What direct or indirect effect is acid rain thought to have on mama''s and forest and buildings

Explain about the chytridiomycota - fungi, Explain about the Chytridiomycot...

Explain about the Chytridiomycota - Fungi Chytridiomycota - Look at the Figure, which illustrates chytridiomycota. These are the simplest among true fungi and are commonly call

Are there chloroplasts in cyanobacteria, Are there chloroplasts in cyanobac...

Are there chloroplasts in cyanobacteria? In cyanobacteria there are no chloroplasts and the chlorophyll layers are dispersed in cytosol. Which chemical element is central in

Prevention and control of water pollution, Various ways/techniques suggeste...

Various ways/techniques suggested for control of water pollution are as follows: 1. Pollutants (radio active, chemical, biological) present in water bodies can be removed by app

How cultural practices are effective at limiting disease, Give two cultural...

Give two cultural practices (not chemical) you could use to control black spot of rose. Based on your current knowledge of the disease triangle, why do you think these cultural pra

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