1. The picture below shows the chromosomes of a corn plant. To take this picture

Question

1. The picture below shows the chromosomes of a corn plant. To take this picture the chromosomes were extracted fron cells at the start of mitosis. Keep in mind that at the start of mitosis the DNA has already been replicated and the cell is diploid (in fact...the cell is diploid throughout mitosis.) Each dark shape in the picture is a pair of sister chromatids (ignore the smudge in the lower right corner). From the list below, select all the true statements.

Select one or more:

a. There are 10 homologous pairs in a corn cell.

b. There are 20 total chromosomes in a diploid corn cell.

c. If the cell shown above were to undergo meiosis, 10 bivalents (also called "tetrads") would be visible during metaphase of meiosis I.

d. A corn gamete (pollen or ovule) is expected to have 5 total chromosomes.

2. A diagram of cell division from the textbook is shown below. The cell shown is undergoing _____________ and the cell has ____ pairs of homologous chromosomes.

Select one:

a. mitosis, 4

b. meiosis, 2

c. mitosis, 2

d. meiosis, 4

e. mitosis, 8

f. meiosis, 8

Explanation / Answer

a. There are 10 homologous pairs in a corn cell.

b. There are 20 total chromosomes in a diploid corn cell.

c. If the cell shown above were to undergo meiosis, 10 bivalents (also called "tetrads") would be visible during metaphase of meiosis I.

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