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

Give three examples of artificial selection, Give three examples of artific...

Give three examples of artificial selection. Include examples of both animals and plants.  Answers will vary, but could include domestic cats, domestic dogs, cattle, sheep, an

What are the main cellular features of fungi, What are the main cellular fe...

What are the main cellular features of fungi? There are unicellular and pluricellular fungi. All fungi are eukaryotes and heterotrophs. Fungi have cells with cell wall made

Define resolution - terminologies used in chromatography, Define Resolution...

Define Resolution - terminologies used in chromatography? Resolution is the effectiveness of the separation and is determined by two factors. These include: Distance

Chemical reaction to unite amino acids liberate, Q. Does the chemical react...

Q. Does the chemical reaction to unite amino acids liberate or incorporate atoms? What are the chemical entities liberated or incorporated in this reaction? The union of amin

Porifra, what type of body cavities present

what type of body cavities present

Tingling or numbness in hands - symptoms of diabetes, Tingling or numbness...

Tingling or numbness is seen in cases of neuropathy. It occurs gradually over time. As high sugar (glucose) in the blood damages the nervous system, particularly in the extremities

Brain, How brain thinks?

How brain thinks?

What is the speech perception test, What is the Speech Perception Test ...

What is the Speech Perception Test The subject is asked to listen to a series of 60 sounds, each of which consists of a double e digraph with varying prefixes and suffixes. The

Indications for surgery-pulmonary regurgitation, Indications for Surgery : ...

Indications for Surgery : Patients usually present with fatigue, dyspnoea and ventricular arrhythmias. If they have additional tricuspid regurgitation, pulmonary valve replacement

Describe the process of rodent control, Q. Describe the process of Rodent c...

Q. Describe the process of Rodent control? Rats and mice are destructive and cause huge loss of stored food commodities. They transmit pathogenic bacteria. Rats and mice are ge

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