A) In a normal meiosis, chromosomes align precisely at the recombination site and crossovers do not change the number of genes in the recombinant chromosomes. B) The presence of duplicated sequences ...

This is a preview. Log in through your library . Abstract The karyotypes of two subspecies of bat, Macrotus waterhousii Gray (Phyllostomatidae), have been studied and compared. Specimens of M.

A new study reveals that -- contrary to decades of evolutionary thought -- chromosome regions that are prone to breakage when new species are formed are a rich source of genetic variation. A new study ...

The order Poales is well known for the presence of holocentric chromosomes, agmatoploidy, symploidy, polyploidy and high variation in chromosome numbers among and within species and genera. The second ...

Understanding how genetic variation contributes to human disease has become a major thrust of modern science. For example, considerable effort currently goes into genomewide association studies, which ...

New insights into the Y chromosome, including its role in disease, should flow from the complete DNA sequencing data now achieved by two international research teams. Although it is commonly reported ...

Chromosomes are tiny, filamentous structures in the cell nuclei of living beings. They contain genes with genetic information, for example, related to the development or control of diseases. Every ...

Highly challenging to sequence and long overlooked, the human Y chromosome’s contributions to health and disease remain largely unknown. A new paper that presents, for the first time, the complete ...

According to the Center for Disease Control and Prevention, people are more susceptible to certain diseases depending on their sex. However, there is a sex bias in the data currently available to ...

Females and males differ in many ways and yet they share the same genome. The only exception is the male Y chromosome. Using beetles as a study system, new research shows that despite of the Y ...