Oct 22, 2025 · According to studies performed in mice, the final stages of sperm maturation appear to be regulated by a gene known as Katnal1, which is expressed by the Sertoli cells …

Nov 13, 2025 · The widespread nature of sexual reproduction in animals has raised intriguing questions concerning the evolutionary origins of sperm. Almost all living animals, from worms …

5 days ago · Genetics, study of heredity in general and of genes in particular. Genetics forms one of the central pillars of biology and overlaps with many other areas, such as agriculture, …

Nov 21, 2025 · Ejaculation, the release of sperm cells and seminal plasma from the male reproductive system. It takes place in two phases: in the first stage, sperm are moved from the …

SEMEN meaning: the sticky, whitish liquid containing sperm that is produced by a male's sex organs

SPERM meaning: 1 : a cell that is produced by the male sexual organs and that combines with the female's egg in reproduction; 2 : fluid that is produced by the male sexual organs which …

1 ENTRIES FOUND: spunk (noun) spunk / ˈ spʌŋk/ noun Britannica Dictionary definition of SPUNK [noncount] 1 informal : spirit, courage, and determination

The secretion of the seminal vesicles constitutes the bulk of the seminal fluid (semen). It is a thick fluid that contains the sugar fructose, proteins, citric acid, inorganic phosphorus, potassium, …

According to studies performed in mice, the final stages of sperm maturation appear to be regulated by a gene known as Katnal1, which is expressed by the Sertoli cells that support …

GENETICS meaning: the scientific study of how genes control the characteristics of plants and animals