When homologous chromosomes cross over, what is the result? a. Two sister chromatids get tangled, resulting in one altering the sequence of its DNA b. Two sister chromatids exchange identical pieces of DNA c. Two nonsister chromatids get tangled, break and proteins re-join them d. Each of the four DNA strands of a homologous pair is broken, and the pieces are mixed
Oogenesis
The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.
Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
When homologous chromosomes cross over, what is the result?
| a. |
Two sister chromatids get tangled, resulting in one altering the sequence of its DNA |
|
| b. |
Two sister chromatids exchange identical pieces of DNA |
|
| c. |
Two nonsister chromatids get tangled, break and proteins re-join them |
|
| d. |
Each of the four DNA strands of a homologous pair is broken, and the pieces are mixed |
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