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)

List the steps of mitosis, Q. List the steps of mitosis and briefly describ...

Q. List the steps of mitosis and briefly describe what happens in each.

What is signal transduction, Signal transduction occurs when an extracellul...

Signal transduction occurs when an extracellular signaling molecule activates a cell surface receptor. In words, this receptor change intracellular molecules changes a response. Th

Pollination, Pollination Pollination refers to the transfer of pollen...

Pollination Pollination refers to the transfer of pollen from dehiscing anthers to the pistil. Unlike animals, plants cannot move to their mates for sexual reproduction. Henc

Radiant warmer, Radiant Warmer A radiant warmer is a device used to m...

Radiant Warmer A radiant warmer is a device used to maintain the body temperature of the newborn and thus play an essential role in influencing oxygen consumption, apnea and

Explain huntington disease gene, Research methods used in studying a geneti...

Research methods used in studying a genetic disease change with technological advances. These changes can be seen in Reading 22.1: Discovering the Huntington Disease Gene, which de

Gills - respiratory organs, Gills - Respiratory Organs Gills are the s...

Gills - Respiratory Organs Gills are the specialised respiratory organs of several aquatic animals. They are found in mollusis and as well in many crustaceans. Typically gills

Preparation of patient for fasting blood sugar analysis, Preparation of Pat...

Preparation of Patient for Fasting Blood Sugar Analysis 1. Blood for fasting blood sugar (plasma glucose) analysis should be drawn after the individual has fasted overnight (8-

Explain homologous and heterologous immunoglobulins, What is the difference...

What is the difference between homologous and heterologous immunoglobulins? Homologous immunoglobulin is the human (from the similar species) immunoglobulin. In case of inocula

Actions of estrogens, Actions of Estrogens The most general effect ...

Actions of Estrogens The most general effect of the estrogens is to promote tissue growth. It is more pronounced in the accessory sex tissues. Estrogens stimulate cell divi

What is the ph inside the stomach, Q. What is the pH inside the stomach? Wh...

Q. What is the pH inside the stomach? Why is there a need to keep that pH level? How is it maintained? Which are the cells that produce that pH? The normal pH of the gastric ju

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