What are complementary genes, Biology

Assignment Help:

What are complementary genes? Does this inheritance pattern obey Mendel's second law?

Complementary genes are the different genes that act together to determine a given phenotypical trait.

For instance, consider a phenotypical trait conditioned by 2 complementary genes whose alleles are respectively X, x, Y and y. performing the hybridization in F2 4 the different phenotypical forms are obtained: X_Y_ (double dominant), X_yy (dominant for the first pair, recessive for the second), xxY_ (recessive for the first pair, dominant for the second) and xxyy (double recessive). This is what happens, for instance, regarding the color of budgerigar feathers, in which the double dominant interaction results in green feathers, the dominant for the first pair, recessive for the second interaction results in yellow feathers, the recessive for the first pair, dominant for the second interaction leads to blue feathers and the double recessive interaction leads to white feathers.

Every complementary gene segregates independently from the others since they are located in different chromosomes. Thus the pattern follows the Mendel's second law (although it does not obey Mendel's first law).

 


Related Discussions:- What are complementary genes

Define the skeletal muscle, Define the Skeletal muscle A. Binding of ca...

Define the Skeletal muscle A. Binding of calcium ion to its receptor site on the actin molecule blocks the attachment of the head of the tropomyosin molecule to its binding sit

General reproduction, write about the asexual reproduction in mucor

write about the asexual reproduction in mucor

Explain the rapport building, Q. Explain the Rapport Building? Maintain...

Q. Explain the Rapport Building? Maintaining good relationship with the client is very important in counselling. This will help you to gain trust, confidence of the client and

What is the meaning of trocophore, What is the meaning of Trocophore? T...

What is the meaning of Trocophore? This free-swimming ciliated larval stage is found in numerous animal phyla including Mollusca and Annelida. Larvae has a unique circle of pre

Segmentation in regenerating annelids, Segmentation in Regenerating Annelid...

Segmentation in Regenerating Annelids Several worms as they grow continue to add new segments at the posterior end. In these, segmentation takes place in a growth zone located

Left antero lateral thoracotomy approach, Left Antero Lateral Thoracotomy A...

Left Antero Lateral Thoracotomy Approach :  Arterial and central venous pressure monitoring lines are placed. A left antero lateral thoracotomy is done through the 5th or 4th

Polychaetes - feeding and digestion in annelids, Polychaetes - Feeding and ...

Polychaetes - Feeding and Digestion in Annelids Polychaetes involve both free moving (errant) and sedentary species. The free moving species are usually macrophagous and the s

Define function of the iron uptake by cells, Define Function of the Iron Up...

Define Function of the Iron Uptake by Cells? Iron has several vital functions in the body. It serves as a carrier of oxygen to the tissues from the lungs by red blood cell haem

Cardiovascular endurance component for physical fitness, Define Cardiovascu...

Define Cardiovascular endurance Component for physical fitness? In our previous section on work capacity, concepts of aerobic capacity Vo2 max were described. Cardiovascular en

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