where this female stored the giant sperm cells after mating. This image relates to an article that appeared in the June 19, 2009, issue of Science, published by AAAS. The study, by Dr. Renate ...

In their asexual reproductive strategy, called pseudogamy, the females use the sperm to activate eggs but cast aside the sperm’s DNA. After fertilization, when the cells of the developing embryo ...

A biopsy of the testis of an infertile man, who had a mutation in the TEX11 gene, shows the precursors of sperm, but no mature sperm. Disclaimer: AAAS and EurekAlert! are not responsible for the ...

Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome. These reproductive cells are ...