Gene interactions (post mendelian genetics), Biology

Assignment Help:

GENE INTERACTIONS (POST MENDELIAN GENETICS)

Phenotypic expression of a gene may be altered by the influence of other genes. The modification of the normal phenotype of certain genes by other genes is known as gene interaction.

The gene interaction is of 2 types : intragenic or interallelic and intergenic or nonallelic.

1. Intragenic Interactions

These interactions occur between the two alleles of same gene to produce a phenotype different from the normal dominant - recessive phenotype. The common intragenic interactions are incomplete dominance, codominance, multiple alleles.

2. Intergenic Interactions

These interactions occur between the alleles of different genes present on the same or different chromosomes to alter the normal phenotype. The familiar intergenic interactions include complementary genes, supplementary genes, polygenes, epistasis, pleiotropy, lethal genes etc.


Related Discussions:- Gene interactions (post mendelian genetics)

Define modulation of transcription of cell cycle proteins, Modulation of th...

Modulation of the transcription of cell cycle proteins? The 1,25-(OH),D  compound (calcitriol), is present in the blood complexes to the vitamin D-binding  protein, a specific

Explain the properties locust bean gum, Explain the Properties Locust bean ...

Explain the Properties Locust bean gum Locust bean gum is slightly soluble in room temperature water and must be heated to 75 to 85 o C for complete hydration and viscosity dev

Respiratory organs, Respiratory Organs These are the organs regarded ...

Respiratory Organs These are the organs regarded with the gaseous exchange, i.e., intake .of oxygen and output of carbon dioxide. They have generally greater rate of gas exch

Congenital defects related to kidney/upper urinary tract, Congenital Defect...

Congenital Defects Related to Kidney/Upper Urinary Tract i) Renal Agenesis  A new born baby with this condition may show low set ears, flat nose, prominent epicanthic

What are sori, What are sori? The word "sori" is the plural form of "so...

What are sori? The word "sori" is the plural form of "sorus". In ferns, a sorus (pl. sori) is a cluster of sporangia on the edge or underside of a fertile frond. In lots of spe

What is indications operation single ventricle physiology, What is Indicati...

What is Indications for Operation Single Ventricle Physiology ? The operation is indicated in patients with single ventricle physiology. Fontan operation is also indicated in p

Skin, physiology of skin

physiology of skin

Explain the types of foods used in space, Explain the types of foods used i...

Explain the types of foods used in Space? The various types of foods are enumerated herewith. Thennostabilized (T): Heat processed foods ("off-the-shelf' items) in aluminium

Lungs, LUNG S (PULMONES) - Present in pleural cavity. Covere...

LUNG S (PULMONES) - Present in pleural cavity. Covered by double layered pleura. Outer parietal pleura and inner visceral pleura. Both are continuous, slip on

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