A somatic cell undergoes the standard cell cycle. Centrosomes duplicate during G
ID: 161989 • Letter: A
Question
A somatic cell undergoes the standard cell cycle. Centrosomes duplicate during G2_ of interphase prophase anaphase telophase cytokinesis In mitosis, the spindle fibers attach to chromosomes through a structure called: synaptonemal complex chiasmata cohesin shugoshin kinetochore Cytokinesis in animal cells involves the formation of cell plate new cell wall contractile ring of microfilaments cleavage furrow both c and d The photograph shows two cells in different stages of the cell cycle 1 - prophase, 2 - interphase 1 - telophase, 2 - prophase 1 - anaphase, 2 - prophase 1 - anaphase, 2 - interphase A diploid cell with 2n-8 chromosomes proceeds through M phase. The resulting number of daughter cells is_ and the chromosome count per cell is 1, 4 1, 8 2, 4 2.8 4.4 Which of the following is a characteristic seen in prophase I that does not occur in prophase of mitosis? chromosomes move to the middle of the cell chromosomes condense chromosomes duplicate chiasmata form microtubules participate in spindle formation What is the outcome of synapsis? side-by-side alignment of homologous chromosomes tetrad separation monad movement to opposite poles chiasma segregation none of the above A cell has 2n = 20 chromosomes. What is the number of chromosomes per daughter cell after the completion of meiosis I and meiosis II, respectively? 20, 20 20, 10 10, 10 10.20 10, 5 Meiosis I is also called a reductional division because it reduces the number of chromosomes by half, true false How many 1^st polar bodies and how many ova are formed during human oogenesis from one secondary oocyte? 2.4 1, 2 0, 1 1, 4 2, l Assuming independent assortment, the ratio of gametes produced by a double heterozygote DdEe is: 1/2 Dd, 1/2 Ee 1/4 D.1/4 d, 1/4 E, 1/4 e 1/2 DE, 1/2 de 1/4 De, 1/4 dE, 1/4 de 9DE, 3De, 3dE, 1de A cross has been set up between a true breeding tall plant producing white flowers and a true breeding short plant producing red flowers. All F_1 plants were tall with white flowers. F_2 produced 4 phenotypic classes; the expected ratio is as follows: 9 tall white: 3 tall red 3 short red: 1 short white 9 short white: 3 short red: 3 tall red: 1 tall white 9 tall white: 3 tall red 3 short white: 1 short red this is a monohybrid cross none of the aboveExplanation / Answer
1. The answer is a. G2 of interphase.
2. The answer is e. Kinetochore
3. The answer is e. both c and d.
4. The answer is c. 1- anaphase and 2 prophase
5. The answer is d. 2, 8 (Type of Division is not mentioned here, 2,8 is the answer for Mitosis and 4,4 is the answer for meiosis)
6. The answer is d. Chiasmata form
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