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

Prolactin, assignment on prolactin

assignment on prolactin

Microarrays, how can you find the coded genes for each piece of DNA?

how can you find the coded genes for each piece of DNA?

Mitochondrial membrane, Fatty acid breakdown happens in the cytosol of prok...

Fatty acid breakdown happens in the cytosol of prokaryotes in plants in peroxisomes and in the mitochondrial matrix of all other eukaryotes.  By entering the mitochondrial matrix,

Explain the term- horizons, Explain the term- Horizons These processes ...

Explain the term- Horizons These processes take a long time- may be a few thousand years to create a soil. As the time passes, the soil matures and generally becomes deeper and

Antibiotic resistance, Antibiotic resistance is the resistance conferred t...

Antibiotic resistance is the resistance conferred to the host the ability to survive a given antibiotic by the plasmids containing resistance genes. If such kind of plasmid is pre

Access burs through the crown-endodontics principles, Access burs through t...

Access burs through the crown:    Carbide fissure burs : cut through metal ( amalgam alloy or cast metal ) or composite resin.    Porcelain fused to metal : -A round diam

How to determines the actual availability of nutrients, How to determines t...

How to determines the actual availability of nutrients The amount of a particular nutrient determined analytically does not necessarily represent what is available but is merel

Define drug effects on food intake - cause dry mouth, Define drug effects o...

Define drug effects on food intake - cause dry mouth? cause dry mouth (xerostomia) : Lack of saliva makes it difficult to masticate and swallow foods, especially those of a dry

How does a dna vaccine prevent future disease, How does a DNA vaccine preve...

How does a DNA vaccine prevent future disease? A DNA vaccine having DNA from a pathogen but cannot cause disease. When the vaccine is injected into a patient, the DNA directs t

Respiration in animals, write the raspiration of different types of animal...

write the raspiration of different types of animals of different phylum

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