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

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

What is ecology?, What is Ecology? The Ecology is the field of Biology ...

What is Ecology? The Ecology is the field of Biology that studies the relationship between living beings and between living beings and the environment.

What is the full chemical equation of photosynthesis, Q. What is the full c...

Q. What is the full chemical equation of photosynthesis? The full chemical equation of photosynthesis is given below: 6 CO 2 + 12 H 2 O + light --> C 6 H 12 O 6    + 6 H 2

Is neuron a synapses onto neuron b, Is Neuron A synapses onto Neuron B ...

Is Neuron A synapses onto Neuron B Consider Neuron B in the frog central nervous system whose plasma membrane has a newly discovered ligand-gated ionotropic receptor, named the

Classification of enzymes, Classification of Enzymes : Enzymes are clas...

Classification of Enzymes : Enzymes are classified  into the following six main categories in according with  the nature of reaction the catalyze: 1.      Oxidoreductases

Explain bond specificity, Bond specificity Some  enzymes  act  on  a pa...

Bond specificity Some  enzymes  act  on  a particular  bond  (glycosidic,  peptide,  ester  etc.). Examples:  pepsin,  trypsin,  chymotrypsin  etc. are  all  only  acting  on

Clostridium perfringens infections, Clostridium perfringens infections ...

Clostridium perfringens infections Cl. perfringens is a rod-shaped, spore-bearing anaerobic organism. It is capsulated and non-motile. A characteristic feature of the organism

Explain the interaction of vitamin a with proteins, Explain the interaction...

Explain the interaction of vitamin a with Proteins? Proteins: The protein status of an individual influences vitamin A status and transport because an inadequate protein intake

How many different types of pseudopods can amoebas have?, Tests of shelled ...

Tests of shelled amoebas are made from a variety of substances including sand grains, chitin and substrate, calcium salts, and even silica. These shells still accumulate in ocean d

Maternity and child health & family planning, M A TERNIT Y AND CHILD HEA...

M A TERNIT Y AND CHILD HEALTH & FAMILY PLANNING - 1.       The health centers give necessary information, guidance & assistance to mother before & after delivery pregnant wo

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