Biology

Biology, 16.09.2019 04:30, maleikrocks3497

Consider a cell that has three pairs of chromosomes. what fraction of the gametes produced from this cell will contain only maternal chromosomes?

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Biology, 31.07.2019 07:30, naiomireyes74p2aybs

An organism has 6 chromosomes (2n = 6) or 3 pairs of homologous chromosomes. assuming no crossing over occurs, how many different combinations of maternal and paternal chromosomes would be possible in its gametes? remember that each gamete will contain three chromosomes, and each of these will be either maternal or paternal. (denote maternal chromosomes m1, m2, m3 and paternal chromosomes p1, p2, p3.) list the possible eight combinations. (remember the formula is 2n, so in this case 23 = 8.)

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Biology, 13.09.2019 17:10, rocky8875

After the first meiotic cell division a. two haploid gametes are produced b. cells are produced that contain twice the same number of chromosomes as somatic cells from which they came. c. the number of chromosomes will vary depending on how the paternal and maternal chromosomes align at the metaphase plate. d. dna replication occurs. e. none of the above

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Biology, 20.09.2019 16:10, BreBreDoeCCx

The random alignment of maternal and paternal homologous chromosomes during metaphase i is one of the ways genetic variability among gametes comes about. for example, it is possible for an organism with 4 pairs of homologous chromosomes to produce gametes with up to 16 different combinations of maternal and paternal chromosomes. in the case of humans with 23 pairs of chromosomes, there are over 8 million possible combinations. how many possible combinations of maternal and paternal chromosomes are possible in the gametes of an organism with a diploid number of 16 chromosomes ?

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Biology, 30.09.2019 22:30, taquavienw

How would meiosis differ without independent assortment? select the two correct answers. the genetic diversity generated by meiosis would be limited to recombination. no genetic diversity among gametes would be generated during meiosis. recombination would not occur because homologous chromosomes would not pair. each gamete would have a random combination of maternal and paternal chromosomes. gametes would have all maternal chromosomes or all paternal chromosomes. 2. how does recombination contribute to offspring diversity? select the two correct answers. it yields gametes with random combinations of maternal and paternal chromosomes. it modifies chromosomes to generate new alleles of genes that code for proteins. it generates gametes with selective advantages over the gametes of competitors. it increases the genetic diversity among gametes produced by an organism. it yields chromosomes that contain both maternal and paternal dna.

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