Answer:
the differnt dna and rna strucures in the mammals cause differen tlooks they have also evolved from being in the wilf most of their lives
Explanation:
Answer:
the ability to form stable bonds
<span>The answer is nutrition. Much like the difference between the height of people today and our grandparent's generation. Improved nutrition among wealthy families means that the bodies of the members of those families could reach their full potential height as limited by their genetics, and environmental factors did not come into play. In other words, the heights of poorer people are limited by both nurture and nature, whereas those of wealthyl people are limited only by nature.</span>
The answer is all of these occur. The tetrads need to be made before crossing over occurs, which only occurs in prophase 1. That automatically means it has to be all of the above.
