Sex Determination: Role of Environmental Factors in Sex Determination, Chromosomal Theory

In nature a large number of diverse mechanisms exist for determination of sex in different species. The fruit fly Drosophila melanogaster and human beings are very important in the development of genetic concepts because in these two organisms, and in many others, individuals normally occur in one of two sex phenotypes, male or female. In these species males produce male gametes, sperm, pollen or microspores while females produce female gametes…

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