active sperm
41evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… …
42pregnancy — /preg neuhn see/, n., pl. pregnancies. the state, condition, or quality of being pregnant. [1520 30; PREGN(ANT) + ANCY] * * * Process of human gestation that takes place in the female s body as a fetus develops, from fertilization to birth (see… …
43snake — snakelike, adj. /snayk/, n., v., snaked, snaking. n. 1. any of numerous limbless, scaly, elongate reptiles of the suborder Serpentes, comprising venomous and nonvenomous species inhabiting tropical and temperate areas. 2. a treacherous person; an …
44Father — Several terms redirect here. For other uses, see Father (disambiguation), Dad (disambiguation), Fatherhood (disambiguation), and Fathering (journal). Father with child A father is defined as a male parent of any type of offspring …
45hormone — hormonal, hormonic /hawr mon ik, moh nik/, adj. /hawr mohn/, n. 1. Biochem. any of various internally secreted compounds, as insulin or thyroxine, formed in endocrine glands, that affect the functions of specifically receptive organs or tissues… …
46reproductive system disease — Introduction any of the diseases and disorders that affect the human reproductive system (reproductive system, human). They include abnormal hormone production by the ovaries or the testes or by other endocrine glands, such as the pituitary …
47Insect morphology — Legend of body parts Tagmata : A Head, B Thorax, C Abdomen. 1. antenna 2. ocelli (lower) 3. ocelli (upper) 4. compound eye 5. brain (cerebral ganglia) 6. prothorax …
48Estradiol — Not to be confused with 17α estradiol. Estradiol Systematic (IUPAC) name …
49Odonata — ▪ insect order Introduction insect order comprising the dragonflies (dragonfly) (suborder Anisoptera) and the damselflies (damselfly) (suborder Zygoptera). The adults are easily recognized by their two pairs of narrow, transparent wings, sloping …
50Drosophila melanogaster — Male Drosophila melanogaster Scientific classification Kingdom …
