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

What is the probability that their child have alkaptonuria, A recently marr...

A recently married man and woman discover that each had an uncle with alkaptonuria, otherwise known as "black urine disease," a rare disease caused by an auto somal recessive allel

Describe the effects of the failure of the pancreas, (a) Name the condition...

(a) Name the condition and (b) describe the effects of the failure of the pancreas to produce sufficient-insulin. (c) How is this condition treated? .

Prevention of overloading the sterilizer, Prevention of overloading the ste...

Prevention of overloading the sterilizer Most sterilizers have a system to notify the operator of mechanical malfunction, but sterilizers cannot notify the operator whether the

Life cycle of sporozoans, Life cycle of sporozoans The complex life cy...

Life cycle of sporozoans The complex life cycle of sporozoans typically involves an asexual and a sexual phase. Sporozoans are haploid except for the zygote. The zygote underg

What is the notochord, What is the notochord? How is this structure formed?...

What is the notochord? How is this structure formed? The notochord is a rodlike structure that produces the supporting axis of the embryo and gives birth to the vertebral colum

What is the function of the secretions of the prostate, What is the functio...

What is the function of the secretions of the prostate, seminal vesicle and bulbourethral glands in reproduction? These secretions with sperm cells from the testicles form the

Explain the concept of selective breeding, Explain the  concept  of  selec...

Explain the  concept  of  selective  breeding a) Understood  the  concept  of  selective  breeding  and/or  were  able  to  use  their Knowledge  of  Mendelian  genetics  to  e

Explain the estimated average intake (ear), Explain The Estimated Average I...

Explain The Estimated Average Intake (EAR)? Considering that the nutrient requirements follow a normal distribution, the EAR is defined as 'the median usual intake that meets t

What are protein hydrolysates, What are protein hydrolysates? Proteins...

What are protein hydrolysates? Proteins that have been treated with enzymes to break them down into amino acids or shorter peptides are referred to as protein hydrolysates. Pr

Discuss how would you perform antiglobulin test, Question 1 Discuss how wo...

Question 1 Discuss how would you perform antiglobulin test? Add a note on it clinical importance. What are the precautions to be taken while performing the test? Question 2 E

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