The diagram below shows two types cells in the human reproductive system.sperm egg(a) Name the organs in which the sperms and the egg are produced. [2]sperms:egg:(b)(i)State the process shown in the diagram above.[1](ii) Describe what happens during the process in b(i).[1] 相...
1. In male animals, the reproductive cell whose nucleus is capable of fusing with the nucleus of an egg cell to form a new organism; a spermatozoon. A sperm has half as many chromosomes as the other cells of the body and moves to unite with the egg. 2. In plants, algae, and certai...
结果1 题目 35The diagram below shows a human zygote being formed.parent parent sperm egg nucleus GO zygote What describes the zygote? B identical to parents number of chromosomes Ano23no46yes23yes46 相关知识点: 试题来源: 解析 B 反馈 收藏 ...
And each embryo has two sets of reproductive tubes, one set in case it's a male, and the other for a female. One way to tell from the very beginning if an embryo is male or female is to look at the chromosomes inside one of its cells. A single pair among the 23 total pairs of...
(Fig. 3). This pattern of motility produces the forward linear progression that propels spermatozoa in a straight line as they swim out of theseminal plasmaafter ejaculation. In the female tract, additional maturational changes in sperm motility occur that are necessary for egg penetration. It ...
Explore the pathway of a sperm's journey. Learn where sperm is produced and stored, how long sperm lives in testes, the pathway of sperm to egg,...
Arrows indicate the egg nucleus and arrowheads indicate the first polar-body. Full size image The second polar body extrusion in the fertilized eggs Moreover, we used the same whole-mount triple fluorescence localization to label the second meiosis completion process in the fertilized eggs. As ...
(D) Combined data recorded from 9 individual cells from three different human donors; NS, non-significant. Data are presented as the mean ± SEM, and (n) indicates the number of individual cells analyzed. We were not able to achieve complete inhibition of rotational movement because of the ...
1 ARTICLE NATURE COMMUNICATIONS | DOI: 10.1038/ncomms8985 Many motile sperm rely on chemical and physical cues to locate the egg1–4. A beating hair-like filament, called the flagellum, serves both as an antenna that gathers sensory cues and as a motor that propels the cell. Receptors on...
Unlike somatic cells, the motile sperm are capable of fertilizing an egg through their highly specialized cell structures [10]. Three major morphological changes take place in the process of spermiogenesis, including acrosome biogenesis, head reshaping, and development of a flagellum (Fig. 1). ...