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a. Many differences in reproductive anatomy between males and females reflect distinct structures and functions of the two types of gametes.
Explain sperm and eggs.
a With these differences egg and sperm developments involve different patterns of meiotic division
- Sperm: Small and motile
- Egg: provide initial food stores for embryo; larger and carry out their function within the female reproductive system where they must mature in synchrony with the tissues that will support the embryo
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Spermatogenesis: definition i. Continuous and prolific in adult males
to produce hundreds of millions of sperm each day, cell division and maturation occur throughout the __ coiled within the two testes
iii. for a single sperm, the process takes about __ weeks from start to end
- the formation and development of sperm
- seminiferous tubules
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a. Oogenesis: definition
i. __process in human female
ii. immature eggs form in __but don’t complete their development until years, and often decades, later
- development of mature oocytes (eggs)
- prolonged
- ovary of female embryo
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Spermatogenesis differs from oogenesis in 3 ways: First
- only in spermatogenesis do all four products of meiosis develop into mature gametes
- 2. In oogenesis, cytokinesis during meiosis is unequal, with almost all the cytoplasm segregated to a single daughter cell
- . This large cell is destined to become the egg; the other products of meiosis, smaller cells called polar bodies, degenerate
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Spermatogenesis differs from oogenesis in 3 ways: Second
- 1. Spermatogenesis occurs throughout adolescence and adulthood
- 2. During oogenesis in human females, mitotic divisions are thought to be complete before birth, and the production of mature gametes ceases at about age 50
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Spermatogenesis differs from oogenesis in 3 ways: Third
1. Spermatogenesis produces mature sperm from precursor cells in a continuous sequence, whereas oogenesis has long interruptions
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