NO Explanation, No Rating!! Please add reasoning Consider each of the following
ID: 34400 • Letter: N
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NO Explanation, No Rating!!
Please add reasoning
Consider each of the following statements. a. In meiosis, the chromosomal material doubles during the last premeiotic interphase. b. The greater the number of chromosome pairs. the greater is the effect of meiosis in producing genetically distinct gametes. c. The diploid number of chromosomes is half the haploid number. d. A cell that will not divide again remains in the G2 stage of interphase. e. The correct sequence of events during meiosis is: synapsis dyad formation chiasma formation f. An organism with n = 3 has 1 chance in 8 of producing a gamete with all maternally derived chromosomes. g. An organism with n = 3 can produce 8 different kinds of gametes in relation to combinations of maternal and paternal chromosomes. h. Separation of sister chromatids occurs during anaphase I of meiosis and is the physical basis for the law of independent assortment. i. A single diploid cell that undergoes meiosis in the male testis will produce 4 genetically different gametes if crossing-over is ignored. j. The independent alignment of different tetrads at metaphase I of meiosis is the physical basis of the law of independent assortment. k. If a diploid cell has 20 pairs of chromosomes, there will be 10 tetrads during prophase I of meiosis. I. If a diploid cell has 20 pairs of chromosomes, there will be 20 bivalents during prophase I of meiosis. m. If a diploid cell has 20 pairs of chromosomes, there will be 80 chromatids present during metaphase of mitosis. n. If a diploid cell has 20 pairs of chromosomes, the organism can make 202 types of gametes if crossing-over is ignored. o. Segregation of sister chromatids occurs during anaphase I of meiosis and is the physical basis of the law of segregation. p. The independent movement of individual homologous chromosomes at metaphase I of meiosis is the physical basis for the law of independent assortment. q. For an individual with a diploid number of 30 chromosomes, there will be 60 chromatids at metaphase I of meiosis. r. For an individual with a diploid number of 30 chromosomes, there will be 15 tetrads at metaphase II of meiosis. Part A Which statements are true?Explanation / Answer
The following statements are true - abfgijklnopqr
Explanations for each statment -
a. TRUE Prior to meiosis, in the pre-meiotic interphase, all chromosomes are duplicated in a process similar to chromosome duplication prior to mitosis.
b. TRUE.
c. FALSE. A diploid number is twice the number of chromosomes than haploid number.
d. FALSE. Only the cells which are competent to divide enter the G2 stage of interphase.
e. FALSE. The correct sequence of meiosis - dyad formation --- synapsis formation --- chaismata.
f. TRUE. The chance of any one maternal chromosome ending up in a particular gamete is 1/2, so probability of all three to be maternal will be (1/2)n, where n=3
g.TRUE. The independent assortment of maternal and paternal homolog chromosomes produces 2n chromosomes, so where n=3, 8 different gametes will be produced .
h.FALSE. Independent assortment happens in metaphase.
i. FALSE. 10 bivalents are formed
j.TRUE.
k.tRUE.
m.TRUE.
n.FALSE
o.FALSE
p. FALSE
q. TRUE.
r.FALSE
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