What is polygenic inheritance?, Biology

Assignment Help:

What is polygenic inheritance? How does it work?

 The Polygenic inheritance, also called as quantitative inheritance, is the gene interaction in which a given trait is conditioned by numerous different genes having alleles that may or may not contribute to increase the phenotype intensity. The alleles may be noncontributing or contributing and there is no dominance among them and the Polygenic inheritance is the kind of inheritance, for instance, of skin color and of stature in humans.

Considering a given species of the animal in which the length of the individual is conditioned by polygenic inheritance of three genes, for the genotype having only noncontributing alleles (aabbcc) a basal phenotype, for instance, 30 cm, would emerge. Considering also that for every contributing allele a 5 cm increase in the length of the animal is added, so in the genotype having only contributing alleles (AABBCC) the animal would present the basal phenotype (30 cm) plus 30 cm more added by each contributing allele that is its length would be 60 cm. In case of triple heterozygosity, for instance, the length of the animal would be 45 cm. i.e. the way the polygenic inheritance works.

 


Related Discussions:- What is polygenic inheritance?

Determine the acidity in the given sample of honey, Q. Determine the acidit...

Q. Determine the acidity in the given sample of honey? This activity will help you to: • carry out the acidity test of the given samples of honey, • learn about the kee

What phenotypic ratios of the diploid, A wild-type strain of haploid yeast ...

A wild-type strain of haploid yeast is crossed to a mutant haploid strain to make a diploid. What phenotypic ratios will be observed in the haploid progeny of the diploid?

Pathogens, Give a brief overview of "HIV & Streptococcus Pyogenes" includin...

Give a brief overview of "HIV & Streptococcus Pyogenes" including signs and symptoms. Who is typically affected by this infection?(Children? Immunocompromised patients?)? What is t

Determine the implant failure after abutment connection, After Abutment Con...

After Abutment Connection The patient may complain of pain during screw tightening. Any clinical evidence should be looked into. It is important not to overtighten and overtorq

Evaluation of specific radiographs, Evaluation of Specific Radiographs ...

Evaluation of Specific Radiographs Intra oral peri apical radiographs, cephalograms, panoramic radiographs and Computed tomographies are necessary for complete survey of teeth

Describe postpartum cardiomyopathy, Q. Describe Postpartum Cardiomyopathy? ...

Q. Describe Postpartum Cardiomyopathy? It is defined as presentation of LV Systolic dysfunction and heart failure in last trimester of pregnancy or within 6 months of delivery.

Theoretical calculation of calorific value of a fuel, The calorific value o...

The calorific value of a fuel can be theoretically determined by using dulong's formula. It is assumed that heat evolved comes from the combustion of carbon, hydrogen, and sulphur

Describe in brief about the boron - micronutrients, Describe in brief abou...

Describe in brief about the Boron  - Micronutrients  Boron is required in extremely small amounts in the range of 0.01 to 1.0 ppm. The actual amount may vary from crop to crop

Difference between temporal summation and spatial summation, Q. What is the...

Q. What is the difference between temporal summation and spatial summation of muscle fibers? What is tetany?   Spatial summation is the recruiting of new muscle fibers to incr

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