What is the function of the two male gametes produced by each pollen g... 01:32 The generative cell of a two-called pollen divides in the pollen tube ... 01:57 What are the possible types of pollinations in chasmogamous flowers. G... 02:14 With a neat, labelled diagram, describe...
题目What is the main purpose of mitosis? A. Genetic variation B. Production of gametes C. Growth and repair D. Reduction of chromosome number 相关知识点: 试题来源: 解析 C。原因:有丝分裂的主要目的是生长、修复和无性繁殖。反馈 收藏
双倍体生物形成单倍体配子，通过单倍体配子形成双倍体合子，有恢复了原染色体数量。由此一方面保证了生物基因的稳定遗传，另一方面又合适地形成变异，促进物种的发展。
By which process is a zygote formed? Are gametes sex cells or zygotes? What do chromosomes do in meiosis but not in mitosis? What is another term for human fertilization? Which type of cell division produces daughter cells that are identical to the original cell?
This word comes from the word for "seed" or "to sow" in Greek. That is apt, because when the sperm is planted, it causes a baby to grow forth. Metaphors between planting seeds and the sexual process of new birth have existed since the dawn of time and are present in much of our ...
A spermatozoon, in plural spermatozoa, or sperm cell is the male reproductive cell that is produced in the man´s testicles in a process called spermatogenesis. The sperm cell´s function is to enable sexual reproduction through its union with the female egg during fertilization. For this to...
When two gametes join, they create an embryo with a full set of genetic information. The cells within the embryo can begin multiplying, dividing, and differentiating to make a new organism. Cells can only undergo a certain number of divisions before they become senescent and stop dividing. The...
What type of cellular reproduction is the mitosis process? What are gametes? What cell forms when an egg and a sperm join? What are the reproductive cells produced by meiosis called? What would happen if sperm and egg were produced by mitosis?
Silicon is the understated hero of the modern world, found in everything from CPUs and medical implants to precious stones, window glass, and bakeware. But what makes silicon so special? Join us for an overview of silicon: where it's found, how it got here, and how we use it. ...
Organisms that reproduce sexually must create cells called gametes that are haploid. When a male and female's gametes fuse together to form a diploid zygote, that zygote will grow into the offspring of those parents. Scientists define fusion of gametes t