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

Chi square test and show the chi square test, You are working with plants t...

You are working with plants that have either hairy (dominant) or 'bald' (recessive) flowers. Hairy flowers have little hairs on them that make the flowers look fuzzy, bald flowers

How much of solution to add 10ng of dna in a reaction, I dissolve 4µg of DN...

I dissolve 4µg of DNA in 1mL of water. How much of this solution would I need in order to add 10ng of DNA in a reaction?

What is the difference between brain and cerebrum, What is the difference b...

What is the difference between brain and cerebrum? What are the main parts of these structures? The concept of brain, or encephalon, comprehends the cerebrum (mostly referred t

How biocompatibility of materials affect osseointegration, Q. How Biocompat...

Q. How Biocompatibility of materials affect osseointegration? Materials available of present are cpTi (commercially pure Titanium) Ti - 6AI - 4V (Titanium - 6 Aluminum - 4 Vana

Injection route - administration of drugs, Injection Route An injecti...

Injection Route An injection is an unpleasant experience for a person at any age and is particularly traumatic to the small child who often lives in fear to the next "need

What does vacuoles do, What does vacuoles do? It is an organelle, locat...

What does vacuoles do? It is an organelle, located in the cell's cytoplasm, which is the site of protein synthesis. It is really a protein having of 2 parts. These 2 "parts"

Interaction of vitamin c with ascorbic acid and leucine, Define Interaction...

Define Interaction of vitamin c with Ascorbic acid and Leucine? Ascorbic acid : The biologically active form, ascorbate, is a cofactor or co-  substrate for eight isolated enz

Agro industrial-evaluation of feedstuff, Evaluation of feedstuff In th...

Evaluation of feedstuff In the feed manufacturing process evaluation of the feed ingredients is very important in achieving consistent quality throughout the year. If one is a

What do you understand by metanephridia, What do you understand by Metaneph...

What do you understand by Metanephridia? An excretory-osmoregulatory organ comprising a ciliated funnel, nephrostome, connected to tubules that lead to the external nephridiopo

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