Explain crossing over in genetics, Biology

Assignment Help:

Explain Crossing Over in genetics?

Crossing over is when the arms of homologous chromosomes exchange segments (and therefore genes) with each other. Recall that one of the homologues originally came from the father's sperm and the other came from the mother's egg.

During Prophase I of Meiosis the homologous chromosomes pair up to form a tetrad. The arms of the chromatids overlap, and can sometimes swap portions. This exchange results in a genetic recombination of the parental genes, providing for genetic variation, the raw material for evolution.

 


Related Discussions:- Explain crossing over in genetics

What is the binding between two amino acids, Q. What is the binding between...

Q. What is the binding between two amino acids called? The chemical bond between two amino acids is called a peptide bond.

Excretion in animals, Excretion in Animals Excretion is concerned alon...

Excretion in Animals Excretion is concerned along with the removal of metabolic wastes that arise as a result of oxidation of energy rich compounds and metabolism of proteins

What are the implant selection errors, Implant Selection Errors There a...

Implant Selection Errors There are a plethora of commercially available implant systems and designs. Qualitative and quantitative nature of the available bone should be careful

Explain etiology and clinical feature of parkinson''s disease, Explain the ...

Explain the Etiology and Clinical Features of Parkinson's disease? The cause of Parkinson's is unknown. Genetic predisposition (in most cases the reason for the death of these

Explain characteristics that make breastfeeding beneficial, Explain charact...

Explain characteristics that make breastfeeding beneficial to the infant? We have listed some characteristics that make breastfeeding beneficial to the infant: • Mature milk

Explain the behavioural observations of the child, Explain the Behavioural ...

Explain the Behavioural Observations of the child Behavioural observations of the child are the second critical source of information available to the neuropsychologist. Qualit

State the young''s trichromatic theory, Young's Trichromatic Theory Ac...

Young's Trichromatic Theory According to Young's theory, three types of cones exist, each sensitive to a particular pigment-rythrolabe (red), chlorolabe (green), and cyanolabe

Apiculture, Apiculture : This is the study of bee-keeping for obtaining wax...

Apiculture : This is the study of bee-keeping for obtaining wax and honey.  Beekeeping is also known as apiculture, it is taken from Latin apis, bee. Apiculture is the maintenance

Explain isoniazid, Explain Isoniazid It is the drug of choice for treat...

Explain Isoniazid It is the drug of choice for treatment of latent TB infection. It should be given for 9 months in a single daily dose of 300 mg for adults and 10 mg/kg (max 3

What are the zymogens, Q. What are the zymogens? proenzymes, or Zymogen...

Q. What are the zymogens? proenzymes, or Zymogens, are enzymes secreted in inactive form. Under some conditions a zymogen shifts to the active form of the enzyme. Zymogen secre

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