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 ...
The diploid pre-egg or pre-sperm cell which undergoes meiosis was originally created by the karyokinesis process called. Explain why mitosis can occur in a haploid cell, but meiosis can't. Why is it so important for sex cells to un...
In situ hybridization confirmed that GALNTL5 mRNA is expressed mainly in the round and elongated spermatids during spermiogenesis after meiosis, not in the outermost cells of the seminiferous tubules, which contain spermatogonia, spermatocytes, and somatic Sertoli cells [6]. More specifically, mouse ...
Which of the following does not occur during DNA replication? a. One new strand is formed by continuous synthesis while the other new strand is formed in fragments. b. Cellular processes proofread new strands to check for errors. ...
A truncated Doc retrotransposon, discovered within a contiguous gene during a screen for essential meiotic genes in Drosophila melanogaster, was found to initiate the germline silencing of ald, the Drosophila Mps1 homolog, a gene critical for proper chromosome segregation during meiosis. In the quest...
we validated two granuloma kinds in HIV & TB versus three in TB, distinguished by cell structure. Extremely, within the two types of HIV & TB granulomas, CD68 + Mφ highly co-expressed IL6R/pSTAT3, contrasting TB granulomas’ high IFNGRA/SOCS3 phrase, showing different signaling pathw...
This process is known to regulate intra-membrane proteolysis (Rip)[48], and typically produces proteins which are transcriptionally active and participate in the control of various cellular processes[6]. S2P action is not directly affected by cellular oxysterol levels, since this enzyme cannot act ...
Possible explanation include: signal peptide cleavage does not occur as predicted; the N-terminal nonapeptide of PS76 g3P is degrated more rapidly than the rest of g3p; the nonapeptide (which is relatively hydrophobic) is sterically inaccessible to the IgM MAb B6.1; the nonapeptide is post...
The diploid pre-egg or pre-sperm cell which undergoes meiosis was originally created by the karyokinesis process called. Gametes fuse to form a embryo. Where is this gamete housed? Does an embryo fulfill the seven life processes? If yes, how?