Sex linkage is the phenotypic expression of an allele that is dependent on the gender of the individual and is directly concerned with the sex chromosomes. The progeny produced are more of parental type and fewer recombinants.

MEDIUM

Earn 100

Bateson used the terms coupling & repulsion while discovering linkage in 'Lathyrus'. If A and B are dominant alleles and a and b are recessive alleles of two genes, then parental crosses in coupling & repulsion phases can be written as follows:-

50% studentsanswered this correctly

Important Questions on Principles of Inheritance and Variation

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of Two genes

The term ''linkage'' was coined by:

MEDIUM

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of Two genes

Select the correct statement.

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of Two genes

Two genetic loci controlling two different traits two different traits are linked. During the inheritance of these traits, the Mendelian laws that would be affected is/are:

MEDIUM

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of Two genes

Alkaptonuria (aa) is which type of error?

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of Two genes

With increasing age, the linkage ___.

MEDIUM

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of Two genes

The following family tree traces the occurrence of a rare genetic disease. The filled symbols signify the individuals with the disease, whereas the open symbols signify healthy individuals.

Question Image

Based on this information, the disease is most likely to be:

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of Two genes

Define ‘linkage’.

MEDIUM

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of Two genes

What is sex linkage?

HARD

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of Two genes

A cross wạs carried out between two individuals, heterozygous for two pairs of genes. Assuming segregation and independent assortment, the number of different genotypes and phenotypes obtained respectively would be

MEDIUM

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of Two genes

In Morgan's experiment with Drosophila, when a yellow bodied white-eyed female was crossed with brown bodied red-eyed male and their