ootid- mature ovum after penetration by sperm but before the formation of a zygote ovule- a small or immature ovum female reproductive system- the reproductive system of females Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc. ...
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...
ootid- mature ovum after penetration by sperm but before the formation of a zygote ovule- a small or immature ovum female reproductive system- the reproductive system of females Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc. ...
In the layer under the plasma membrane ( cortex ) are the cortical granules . Their content protects the egg from fertilization by more then one sperm. During fertilization the sperm is attracted to the egg by chemotactic peptides causing changes in the voltage of th ...Springer Netherlands...
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 ...
This new find underscores that the ovum-in-ovo pathology is not unique to birds and sauropods share a reproductive behavior very similar to that of other archosaurs.Similar content being viewed by others Histological findings of sperm storage in green turtle (Chelonia mydas) oviduct Article Open...
The preovulatory coat (oocyte coat), called zona pellucida (ZP) in mammals and vitelline envelope in non-mammals, consists of a protein matrix of cross-linked glycoprotein filaments composed of ZP proteins and mediates the sperm-egg interaction prior to fertilization [4]. In birds, the ovum ...
The eggs and sperm were mixed for about one min and left for 5 min at 15 °C, during which the eggs adhered to the glass what facilitated the entire incubation operation. Excess sperm was removed by replacing the water, and the dishes were then placed in plastic beakers in a temperature...
The diagram depicts the interplay between calcium and RGS2 during egg development and fertilization. RGS2 suppresses calcium signaling long enough for the sperm to travel and fuse with the egg. Credit: NIEHS Researchers at the National Institutes of Health have discovered a protein that plays a vi...
We also use optional cookies for advertising, personalisation of content, usage analysis, and social media. By accepting optional cookies, you consent to the processing of your personal data - including transfers to third parties. Some third parties are outside of the European Economic Area, with...