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

Chemical stress - nature of the solutes, Chemical Stress - Nature of the so...

Chemical Stress - Nature of the solutes The acidic or basic reaction of soil and water of a particular habitat reflects its geochemical history beginning with its formation an

Explain zymogen, Zymogen :- an  inactive form of an  enzyme; becomes active...

Zymogen :- an  inactive form of an  enzyme; becomes active prior to its action.

Excreation, What is the excreatory organ in agama lizard

What is the excreatory organ in agama lizard

Difference between the exocrine and endocrine gland, Q. What is the differe...

Q. What is the difference between the exocrine gland and the endocrine gland? Endocrine gland is a gland whose secretions are called as hormones that are collected by the blood

Ways to adapt to stress, Ways to adapt to stress Now that you know the...

Ways to adapt to stress Now that you know the nature of stress, let us see what type of strategies plants have acquired to adapt to stress. You know that biological functions

Define the ltlt pasteurization method, Define the LTLT Pasteurization Metho...

Define the LTLT Pasteurization Method? In LTLT pasteurization, the pasteurization time is in the order of minutes and related to the temperature used; two typical temperature/t

Calculate the frequencies of heterozygotes, If dimples may be considered a ...

If dimples may be considered a single-gene dominant trait, and 64% of the population features dimples, calculate the frequencies of heterozygotes and both types of homozygotes, ass

Style of stigma interaction, Style of Stigma Interaction The style has...

Style of Stigma Interaction The style has been distinguished into two types: In open styles a stylar canal is present which is lined with a well-developed glandul

Meaning of cellular secretion, Cell secretion is the elimination to the ext...

Cell secretion is the elimination to the exterior of substances formed by the cell (for example, hormones, mucous, sweat, etc.)

Respiration, how do respiration take place in animal????

how do respiration take place in animal????

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