+91-8076753736 support@wiredfaculty.com
logo
logo

Sponsor Area

Molecular Basis Of Inheritance

Question
CBSEENBI12047376
Wired Faculty App

Genes which are located only in the X-chromosome are known as

  • epistasis genes

  • holandric genes

  • operator genes

  • antiepistasis genes

Solution

A.

epistasis genes

According to Barr body concept (applicable only for X-chromosomes) genes present on the Barr body (inactive X-chromosome) are at times hypostatic due to presence of epistatic genes on the active X-chromosome. Thus, epistasis gene is the most appropriate option. Genes which are located on X-chromosome only are called hologynic genes and those found on Y-chromosome only are called holandric genes.

Epistatis is the phenomenon where the effect of one gene is dependent on the presence of one or modifier genes. Operator gene in Lac operon, is a segment to which a repressor binds.

Some More Questions From Molecular Basis of Inheritance Chapter

Which was first genetic material ?

Suggest one evidence to prove that RNA was first genetic material.

Why was RNA unstable ?

What made DNA more preferrable as genetic material ?

Process of replication is completed in how much time in E.coli ?

What is average rate of polymerization ?

List three components of transcription unit.

Which RNA acts as an adapter ?

Name three kinds of polymerases.

What is splicing ?

Mock Test Series

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation