Science at a Distance

Mendelian Genetics

Mendelian Genetics - Topic Outline

Sex Inheritance

A diagram of a Punnett Square showing the chromosomes involved in the inheritance of sex.
The female had the genotype XX, and produced the identical gametes seen at the left side of the diagram.
The male had the genotype XY, and produced the two different gametes seen at the right side of the diagram.
The genotypes seen in the center of the square represent the possible genotypes of the F1 generation.
Two female offspring are produced for every two male offspring. This is a 1:1 ratio of 50:50 females to males

Lecture Notes Mendelian Genetics - Topic Outline
Science at a Distance
© 1997, Professor John Blamire