百度试题 结果1 题目During which process does crossing over occur? A. Mitosis B. Meiosis I C. Meiosis II D. Both mitosis and meiosis 相关知识点: 试题来源: 解析 B。原因:交叉互换发生在减数第一次分裂过程中,同源染色体配对时。反馈 收藏 ...
Why does crossing over occur in meiosis but not in mitosis? Explain gene mutations. Why can mutations in bacteria be a bad thing? Are mutations the result of genetic damage? Why must mutation be random according to the modern synthesis?
What are 3 ways that genetic diversity arises in the offspring of sexually reproducing organisms? Relate two of these to events in meiosis. What would happen if meiosis did not occur? What is the outcome of meiosis? In meiosis, what is the purpose of crossing over?
Answer and Explanation:1 Fertilization of an egg, in a female human for instance, usually occurs en route to the uterus via the fallopian tube. After ovulation, as the egg... Learn more about this topic: Fertilization | Definition & Process ...
meiosis and chromosome role Each pair of chromosomes—called a tetrad, or a bivalent—consists offour chromatids. At this point, the homologous chromosomes exchange genetic material by the process of crossing over (see linkage group). What will happen if a chromosome loses its centromere?
What would happen if synapsis did not occur in meiosis? What is the first stage of meiosis during which a cell is considered haploid? Where does meiosis occur in females? What type of cell undergoes meiosis? During which phase of meiosis does crossing over of chromosomes occur?
Does a mutation happen in a gamete or somatic cell? What would result if chromosomes did not replicate during interphase? When during the cell cycle are chromosomes visible? Are gametes cells genetically identical to somatic cells? What is the outcome when a cell undergoes meiosis?
When does fertilization occur during meiosis? Are autosomes haploid or diploid? Meiosis produces which cell type? In prophase I of meiosis, crossing over results in [{Blank}]. Does meiosis or cleavage mitosis happen first? What happens to chromosomes during meiosis?
Explain why meiosis is necessary for genetic recombination. What would happen if gametes were produced by mitosis instead of meiosis? How do you replicate meiosis with crossing over? Why does meiosis consists of two cell divisions? What's the difference between mitosis and meiosis?
When do synapsis and crossing over occur in mitosis? How does nondisjunction during meiosis I differ from nondisjunction in meiosis II? Does meiosis or cleavage mitosis happen first? In what stage of meiosis does trisomy 21 occur? Explain what specific cellular events result in nondisjunction? Can...