BIOLOGY 1A03 Lecture 3: Theme 5: Module 3 - Sex Chromosomes and Linkages

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 1A03
• Professor: Dr.Da Silva

Document Summary

In a pedigree, males in the family are typically represented by squares and females are represented by circles. 000 protein-coding genes in addition to genes coding for functional rna molecules. It is clear that there must be more than one gene per chromosome and that the basic principles of. The inheritance of genes on the x-chromosome: sex chromosomes, while there are obvious anatomical and physiological differences between males and females, the chromosomal basis for determining sex is rather unique. A gene that is located on either sex chromosome is referred to as a sex-linked gene because expression of the phenotype may depend on the sex of the individual. This is known as a hemizygous individual, rather than the situations in which there are two alleles such as heterozygous or homozygous individuals. This is because she was a carrier for the hemophilia allele.