Fig. 1 Species X ata AttA 5. After reproductivetell u would have chromosomes. [h
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Fig. 1 Species X ata AttA 5. After reproductivetell u would have chromosomes. [how many?). 6-7. Draw the karyotype for spec ies X'in the box below. example karyotype is shown on p. I of the Ch 1o class notes (& Fig. 10.3 of the textbook). As in humans, larger chromosomes are given a lower number. You should number your chromosomes pairs & use2 ades as in Fig. 1 to distinguish homologues within a pair. You dont need to label alleles in your karyotype or show banding patterns. 7. In the larger circles below, draw 2 possible pairs of daughter cells after meiosis 1. For full it, a) make sure your pairs are different from each other, b) make sure to label alleles and that the credi consistent with the parentage shown in Fig. 1 (indicated by color/shading), and c) make sure each cell has the correct number of chromosomes &chromatids; per chromosome. crossovers typically occur between homologs, assume no cros Possible pair Even though 1-3 sing over and no errors in division. Possible pair 2 daughter i daughter I daughter 2 daughter 2 Divide above cell by meiosis 2 into 2 daughters Divide above cell by meiosis 2 into 2 daughters In the smaller circlcs at lcft draw the daughter cells of possible pair i after meiosis 2 Makc surc your chromosomcs, alleles & colors are consistent with what you drew for pair i 18. How many possible different daughter cells could occur after the first division for this cel, assuming no division errors, no mutation, and no crossing over?[Note total cells, not total pairs) I9. The cells are 20. At least how many genetically different gametes could a male with 5 homologs produce? [haploid or diploid?] after meiosis I and haploid or diploid?] after meiosis II.Explanation / Answer
Meiosis in a cell always produces 4 haploid daughter cells, ie - with half the number of chromosomes.
Meiosis completes its division in two stages - Meiosis I as well as Meiosis II. Generally, DNA replication in the synthetic phase occurs before the start of multiplication phase. Then there is Meiosis I in which a cell with 2n = 6 would form 2 daughter cells with n = 3 after Meiosis I. In Meiosis II, chromosomes number halves and every daughter cell produced in Meiosis I divide into another daughter cell. Hence, at Meiosis II end cell would have produced 4 daughter cells with n = 3. if there was three pair of chromosome then 23 = 8 genetically different gametes could be seen.
Daughter cell of possible pair1 may have chromosome arrangement be like that all the paternal chromosome in one cell and all the maternal chromosome in another cell. Such as, in one cell. In another possibility pair may be chromome of mixed maternal and paternal origin comes in both cell.
After 1st division two cells would be produced.
Cells are haploid after meiosis 1 and haploid in meiosis 2
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