How genes can be exchanged between chromatids, Biology

Assignment Help:

Q. How Genes can be exchanged between chromatids?

When two homologous chromosomes physically exchangecorresponding segments during prophase I of meiosis, geneticists call it crossing over. Recombinations take place at chiasmata during pachytene of meiosis-I. If just a few exchanges take place, genes which are closer together are likely to stay together. The farther apart on same chromosome genes are, more likely they will separate during recombination. The two extremes are independent assortment and absolute or complete linkage. Progeny resulting from crossing over appear in repeatable proportions, known as recombinant frequency. Greater recombination frequencies are observed for genes which are farther apart on chromosomes as a chiasma is more likely to cutbetween genes which are far apart than genes that are closer together.


Related Discussions:- How genes can be exchanged between chromatids

Fixation and movement to echinoderms, Q What is the system that permits fix...

Q What is the system that permits fixation and movement to echinoderms? The system that permits fixation and movement to substrates in echinoderms is called the ambulacral syst

Micro debrider-therma-fill, Micro Debrider: long , it's tip as hand spr...

Micro Debrider: long , it's tip as hand spreader, not smooth and resemble H file. -    These instruments have a hedstrom cutting configuration with a standard 0.02 taper and

Morphology of angiosperms, define inflorescence and explain in detail about...

define inflorescence and explain in detail about it''s types

Describe female and male surgical sterilization, Q. What are the most commo...

Q. What are the most common methods of female and male surgical sterilization? Vasectomy is the majority common method of surgical sterilization in men in vasectomy the vas def

What are cytoplasmic inclusions, Cytoplasmic inclusions are cytoplasmic mol...

Cytoplasmic inclusions are cytoplasmic molecular aggregates, like as pigments, organic polymers and crystals. They are not considered cell organelles. Fat drops and glycogen gra

What is the likely function of the snf gene, In yeast, a new mutation calle...

In yeast, a new mutation called suc was recently discovered.  The suc mutant cannot use sucrose as a source of carbon, and will not grow if the culture medium contains only sucrose

How is the gymnosperm seeds formed, Q. How is the gymnosperm seeds formed? ...

Q. How is the gymnosperm seeds formed? What are the ploidies of the structures that compose the seeds? Their seeds are produced from differentiation of the megasporangia in the

How oak trees affect lyme disease in humans, How does the production of aco...

How does the production of acorns by oak trees affect Lyme disease in humans?  When more acorns are produced by oak trees the populations of mice and deer that eat acorns enhan

Gluconeogenesis, Gluconeogenesis Gluconeogenesis is the procedure throu...

Gluconeogenesis Gluconeogenesis is the procedure through that glucose is synthesized from smaller easier molecules such as lactate and pyruvate. Although the catabolic linear p

Symbiotic interaction - biological stress, Symbiotic interaction - Biologic...

Symbiotic interaction - Biological Stress Presence of symbiotic microorganism can result in differential growth stimulation of those plants which can recognise the beneficial

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