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

Define recommended dietary allowance for vitamin a, Requirement and Recomme...

Requirement and Recommended Dietary Allowance (RDA) for Vitamin A? Recommendations for adequate vitamin A intake based on the amounts needed to correct night blindness among vi

The genotype of a plant showing the dominant phenotype, The genotype of a p...

The genotype of a plant showing the dominant phenotype can be determined by : 1. Test cross 2. Dihybrid cross   3. Pedigree analysis 4. Back cross It is determined

Why membrane became permeable to sodium ions, At 1 AM, an impermeable membr...

At 1 AM, an impermeable membrane separates a 1 liter solution of 1M NaCl in the left compartment from a 1 liter solution containing both 1M NaCl and 1M KCl in the right compartment

What is a single cell protein, What is a single cell protein? The prote...

What is a single cell protein? The proteins obtained from microbial sources, i.e. algae, fungi, bacteria, yeast etc. are referred to as Single Cell Proteins. These are isolated

Elaborate extracorporial in detail, Elaborate Extracorporial in detail. ...

Elaborate Extracorporial in detail. Outside of the body. An example is extracorporial digestion found in some animals where digestive enzymes are regurgitated into food. Once i

Prevention and control from escherichia coli, Q. Prevention and Control fro...

Q. Prevention and Control from escherichia coli? Prevention and Control: Involves avoiding contaminated food and water that have high coliform counts, avoiding unpasteurized ju

How is the respiratory system in aquatic molluscs, How is the respiratory s...

How is the respiratory system in aquatic molluscs divided? What adaptive respiratory structure do terrestrial molluscs present? Aquatic molluscs oxygenate their blood through g

Haemo filtration-open-heart surgery, Haemo Filtration : Ultra filtration d...

Haemo Filtration : Ultra filtration during open heart surgery helps in removing excess fluid, especially in renal failure patients. Patients are haemo diluted (haematocrit 18-20)

Define factors affect the rate and total drying time, Define factors affect...

Define factors affect the rate and total drying time? Four main factors affect the rate and total drying time, which include: a) The properties of the products (the moisture

Myocarditis, Myocarditis Myocarditis is inflammation of the myocardiu...

Myocarditis Myocarditis is inflammation of the myocardium, of the heart muscles. i) Causes Infection: . Wrus, bacteria, fungus, parasites Non-infection: Radi

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