Question at position 86 By which cell division process does an animal zygote divide?meiosismitosis

Question

BlackTom AI · Accepted Answer

The question asks about the cell division process by which an animal zygote divides, and presents two options: meiosis or mitosis.
Option: meiosis. In animals, meiosis is the type of cell division that produces gametes (sperm and egg) with half the chromosome number. It occurs during gametogenesis before fertilization, not after a zygote is formed. Therefore, the zygote does not repeatedly undergo meiosis as part of its early development. 
Option: mitosis. After fertilization, the zygote is a diploid cell that begins to divide through mitosis as it undergoes embryonic development. Mitosis produces genetically identical diploid daughter cells, allowing the single fertilized egg to grow into an embryo through successive rounds of cell division. 
In summary, meiosis is the division that creates gametes prior to fertilization, while mitosis is the division that drives post-fertilization embryonic development in animals. Therefore, the animal zygote divides by mitosis, not meiosis.

Question at position 86 By which cell division process does an animal zygote divide?meiosismitosis

查看解析

登录即可查看完整答案

类似问题

What stage of mitosis is characterized by alignment of the replicated chromosomes along a central axis of the cell?

In a cell with 8 pairs of chromosomes (2n = 16), how many separate chromosomes will be present at metaphase of mitosis?

Question at position 59 If a diploid cell, in which 2n = 16, undergoes mitosis and cytokinesis, the result is:2 cells; each with 2n = 84 cells; each with 2n = 322 cells; each with 2n = 322 cells; each with 2n = 164 cells; each with n = 8

Question at position 49 Which stage of mitosis is shown above?prophasemetaphaseinterphaseanaphasetelophase

What role do spindle poisons play in cancer/cancer treatment?

Which of the following is TRUE? Sister chromatids:

Which event below would you NOT observe during prophase?

A cell contains a diploid genome of 2N= 18 chromosomes, How many DNA molecules will be present in a cell during metaphase of mitosis?

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单