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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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Anonymous sara5656
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A month ago
1) Germ cells are specialized cells that develop into gametes. Gametes are produced through the process of meiosis.

If the diploid number for humans is 46 chromosomes, how many chromatids does a cell undergoing meiosis have at each of the following phases?

Select the row that correctly shows the number of chromatids at each phase.

a. G2 of Interphase      Metaphase I    Prophase II
             46                                46                    23

b. G2 of Interphase      Metaphase I       Prophase II
                46                             92                      23

c. G2 of Interphase      Metaphase I        Prophase II
             92                                    46                   46

d. G2 of Interphase        Metaphase I          Prophase II
                  92                           92                           46









2) In an organism with a diploid number of 16, how many chromatids are present in each of the following phases:

          Answer                                 Answer                                       Answer
Mitotic metaphase        Meiotic metaphase I             Meiotic metaphase II






3) SEE IMAGE ATTACHED






4) SEE SECOND IMAGE ATTACHED TO ANSWER THE FOLLOWING:

Use the following information to answer the next question.

During metaphase I of meiosis, tetrads align along the metaphase plate independently of each other. Therefore, there is a random “shuffle” of maternal and paternal chromosomes in the resulting gametes.

The following diagram demonstrates how this works in a diploid cell with four chromosomes open parentheses (2n= 4 ). Because there are two pairs of chromosomes and each pair can align in one of two ways during metaphase I, the number of possible variations in the gametes produced is 2^2, or 4.

For an organism that is (2n =6), there are three pairs of chromosomes, so the number of possible variations in the gametes produced due to independent assortment in metaphase I is 2 ^3, or 8.


In an organism with a haploid number of 7, how many possible combinations of maternal and paternal chromosomes can occur in its gametes?

a. 2 ^ 7 = 128



b. 2 ^ 14 = 16 384



c. 7 ^2 = 49



d. 1 ^ 7 = 7
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Anonymousbio_man
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#1
A month ago
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1) Germ cells are specialized cells that develop into gametes. Gametes are produced through the process of meiosis.

If the diploid number for humans is 46 chromosomes, how many chromatids does a cell undergoing meiosis have at each of the following phases?

Select the row that correctly shows the number of chromatids at each phase.

a. G2 of Interphase      Metaphase I    Prophase II
             46                                46                    23

b. G2 of Interphase      Metaphase I       Prophase II
                46                             92                      23

c. G2 of Interphase      Metaphase I        Prophase II
             92                                    46                   46

d. G2 of Interphase        Metaphase I          Prophase II
                  92                           92                           46

Quote
2) In an organism with a diploid number of 16, how many chromatids are present in each of the following phases:

          Answer                                 Answer                                       Answer
Mitotic metaphase        Meiotic metaphase I             Meiotic metaphase II

2n = 16
Mitotic metaphase I = 32
Meiotic metaphase I = 32
Meiotic metaphase-II = 16

Quote
4) SEE SECOND IMAGE ATTACHED TO ANSWER THE FOLLOWING:

Use the following information to answer the next question.

During metaphase I of meiosis, tetrads align along the metaphase plate independently of each other. Therefore, there is a random “shuffle” of maternal and paternal chromosomes in the resulting gametes.

The following diagram demonstrates how this works in a diploid cell with four chromosomes open parentheses (2n= 4 ). Because there are two pairs of chromosomes and each pair can align in one of two ways during metaphase I, the number of possible variations in the gametes produced is 2^2, or 4.

For an organism that is (2n =6), there are three pairs of chromosomes, so the number of possible variations in the gametes produced due to independent assortment in metaphase I is 2 ^3, or 8.

In an organism with a haploid number of 7, how many possible combinations of maternal and paternal chromosomes can occur in its gametes?

a. 2 ^ 7 = 128

b. 2 ^ 14 = 16 384

c. 7 ^2 = 49

d. 1 ^ 7 = 7

27 = 128

Explanation:

- In a diploid individual, 2n possible gametes can be produced where n is the haploid chromosome number.

- In above question, haploid number is 7 i.e , n=7. Here 2n = 27 = 128.
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Anonymous Author
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#2
A month ago
Thanks but can you please answer question 3
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