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?

What is g-protein, Which of the following is true for a G-protein? A. A...

Which of the following is true for a G-protein? A. After the ATP-ase of the alpha subunit of a G protein converts the ATP bound to the alpha subunit to ADP and inorganic phosph

Explain the procedures involved in blood doping, Describe the procedures in...

Describe the procedures involved in blood doping. What are the physiological mechanisms behind blood doping that attempt to achieve the desired outcome(s).

General reproduction, write about the asexual reproduction in mucor

write about the asexual reproduction in mucor

Gastro epiploic artery and inferior epigastric artery, Gastro Epiploic arte...

Gastro Epiploic artery GEA is seldom used now. Patency has been reported as 94 per cent at one year, 88 per cent at five years and 83 per cell1 at ten years. Inferior Epiga

Explain about the weight imbalance, Explain about the Weight Imbalance? ...

Explain about the Weight Imbalance? You are aware that obesity is one of the major public health problems of the world, Earlier a problem of the developed nations; it is now in

The Human Inpact on the Environment, Name the four organisms which are curr...

Name the four organisms which are currently in danger of extinction because of human activities?

Where in the body is the thyroid gland located, Where in the body is the th...

Where in the body is the thyroid gland located? The thyroid is located in the anterior cervical region (frontal neck), in front of the trachea and just below the larynx. It is

Zoonotic diseases-classification in terms of reservoir host, Classification...

Classification in terms of reservoir host 1.  Anthropozoonoses: Infections transmitted from lower vertebrate to man, e.g., rabies, plague, leptospirosis, etc. 2.   Zooanthro

Define the skin capillary fragility test, Define the Skin Capillary Fragili...

Define the Skin Capillary Fragility Test? One of the earliest signs of ascorbic acid deficiency is the fragility of the capillaries. Capillary fragility is measured by applyin

Explain glucocorticoids, Explain Glucocorticoids The adrenal cortex se...

Explain Glucocorticoids The adrenal cortex secretes the glucocorticoids which  increase gluconeogenesis by increasing hepatic intake of amino acids accompanied by increased ac

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