Suppose you are studying pea plants. You find that half of the individual pea plants are able to survive in mild drought conditions. Why might this data be important?
Not all pea plants have the same variants (or alleles) of each gene. The pea plants which survived might have a gene which enables them to survive drought better and the number is important because it indicates how common that allele mght be in the overall population. Clear? Sorry that took so long. Brower issues.
Its ok
Cool!
Wat is a allele?
For each single gene in an organism, there are sometimes more than one variant. For example, if a gene controlled eye color, there would be separate alleles which give blue eyes, green eyes, brown eyes, etc. Clear? ;D
a little
So for pea plants, let's say you have one gene. This gene controls whether or not the pea plant will be able to live with very little water. You can have many different variants of that gene. These are alleles. For simplicity's sake, let's say there are only two: one which makes the plant be drought resistant, the other which makes it need water. Because different things happened to different plants in the same conditions in your experiment, it suggests that there is genetic variability among the plants. And building on that, the number which survived (i.e., have the drought resistant allele) gives some indication of how wide spread that allele is in the population.
o i get it now
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