百度试题 结果1 题目How many times does DNA copy during meiosis? A. 1 B. 2 C. 3 D. 4 相关知识点: 试题来源: 解析 A 反馈 收藏
How many chromosomes do sperm cells have? How many chromosomes are in a human sperm cell? How many chromosomes does someone with Down Syndrome have? How many chromosomes are in a heart cell? How many chromosomes are there after mitosis?
A cell has 24 chromosomes. After meisos is completed, how many chromosomes will be in a single cell? How many total chromosomes are in a somatic cat cell? A cell has 16 chromosomes. How many chromosomes would its daughter cells have after meiosis?
here we go -- the moment when the male and female sex organs and sex cells get together. While there are many ways in which a man and a woman can engage in sexual behavior together,vaginal intercourse, in which a man's penis is ...
All the essential stages that take place during meiosis, except 04:05 In the meiotic cell division four daughter cells are produced by two s... 04:24 If the egg of an organism has 10 Pg of DNA in its nucleus, how much DN... 03:52 To produce 102 pollen grains, how many meiotic ...
What cell is formed after meiosis 1? However, Meiosis I begins with one diploid parent cell and ends withtwo haploid daughter cells, halving the number of chromosomes in each cell. Meiosis II starts with two haploid parent cells and ends with four haploid daughter cells, maintaining the number...
Many members of this family can locally melt or unwind short duplex regions. Abasic lesions Regions of DNA damage in which the nucleobase has been excised from the sugar backbone. Catenanes Topologically interlinked duplex DNA rings. Plectonemic supercoiling The natural tendency of supercoiled DNA ...
In order to find out more about these jumps, Nelms and Walbot also studied meiosis in maize mutants. In one mutant strain, the non-reproductive cells surrounding the reproductive cells fail to mature. In another mutant, the reproductive cells' progression through meiosis was derailed. In both ...
How many autosomal chromosomes does a human have? Autosomal Chromosomes: Chromosomes are divided into two types: autosomal and sex chromosomes. Sex chromosomes are those that determine whether the human is male or female. If the person receives two X chromosomes, it will be female, and if it ...
A cell has 16 chromosomes. How many chromosomes would its daughter cells have after meiosis? How many chromosomes are in an egg cell and sperm? How many pairs of chromosomes do capuchins have? How many copies of each chromosome are in a human zygote?