OpenStudy (anonymous):

Chapter 11 Lab Modeling Meiosis Pre-Lab Questions 1. Control Variables Why must you use the same number of beads when you construct the second chromosome in Step 1?

5 years ago
OpenStudy (nottim):

wut u think

5 years ago
OpenStudy (anonymous):

u use the same number because the "beads" are supposed to match completely ?

5 years ago
OpenStudy (anonymous):

idk thats what i think, but now i need help on number 3, 3. A diploid cell has two pairs of homologous chromosomes. How many different combinations of chromosomes could there be in the gametes?

5 years ago
OpenStudy (anonymous):

You're right; they DO have to match completely. Toward the beginning of Meiosis, the chromosomes need to duplicate themselves. Here's a picture of a duplicated chromosome: http://www.macroevolution.net/images/sister-chromatids-275px.jpg You can see here that the YELLOW chromosome has made a copy of itself. The BLUE chromosome is completely identical to the yellow one. So, they are both definitely identical in SIZE and LENGTH. That is why you have to use the same number of beads. Both chromosomes must be equal in size.

5 years ago
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