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

Determine about the prokaryotic cell, Determine about the prokaryotic cell ...

Determine about the prokaryotic cell While we describe in detail the structure of a eukaryotic cell, it will be useful to examine the structural features of a typical prokaryot

Learning objectives of metabolic diseases, Q. Learning objectives of metabo...

Q. Learning objectives of metabolic diseases? • enumerate the etiological factors and symptoms of gout and few inborn errors of metabolism, • describe the metabolic changes

Patterns of cleavage, P A TTERNS OF CLEAVAGE - Patterns of cleavage d...

P A TTERNS OF CLEAVAGE - Patterns of cleavage depends upon amount of yolk & distribution of yolk. These are following types - 1 .       RADIAL CLEAVAGE PATTERN -

What is symbiotic nitrogen fixation, a) What is symbiotic nitrogen fixatio...

a) What is symbiotic nitrogen fixation? b) Name the two protein components required for this process. Define their role.

What is the vector of malaria, What is the vector of malaria? How different...

What is the vector of malaria? How different is its behavior from the behavior of the vector of dengue fever? The vector of malaria is a mosquito of the genus Anopheles, also k

Symptoms of hiatus hernia, Q. Symptoms of hiatus hernia? In most patien...

Q. Symptoms of hiatus hernia? In most patients, no symptoms are seen. When symptoms do occur, they are: 1. discomfort after heavy meal, 2. Difficulty in breathing while l

Circulatory system, Circulatio n I n  Animal Circulation is served ...

Circulatio n I n  Animal Circulation is served by a fluid as blood/ lymph that circulates through the body in a regular manner, receiving & distributing materials in the wa

Asexual reproduction and cloning in plants, before stem cuttings are plante...

before stem cuttings are planted the cut end of the stem is often dipped in a hormone powder .what is the point of this?

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