Answer:
75% red, 25% other color (brown?)
Explanation:
A cross between two heterozygous red eye flies (Rr x Rr)
R r
R <em>RR Rr</em>
r <em>R</em>r <em> rr</em>
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The possible genotypes are RR, Rr, and rr. There are two possibilities of Rr.
Since the heterozygotes have red eyes, the red eye allele must be dominant. Therefore, RR and Rr genotypes will all have red eyes. That means 3/4 (75%) of offspring will have red eyes. 1/4 25% are h0m0zygous recessive (rr), and will therefore have the other eye color (question doesn't mention which colour this is, it is likely brown)
Plants and other autotrophs make food out of “thin air”—at least, they use carbon dioxide from the air to make food. Most food is made in the process of photosynthesis. This process provides more than 99% of the energy used by living things<span> on Earth. Photosynthesis also supplies</span>Earth's atmosphere<span> with </span>oxygen<span>.
hope it help ;P
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The results would vary between observing a population directly as opposed to observing them indirectly in a way that you will miss some factors, particularly, those observable factors, such as their daily and actual behavior. Hope this answers your question.
Ans : C - enzymatic action on carbohydrates ( enzyme amylase catalyses carbohydrate to maltose here in the mouth )