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Margarita [4]
3 years ago
7

In 2003, the list of endangered species included 82 fish, 20 amphibians, 78 reptiles, 258 birds, and 316 mammals. About how many

times as great was the number of endangered species of mammals as that of reptiles?
Biology
1 answer:
lara [203]3 years ago
3 0

Answer:

238

Explanation:

If you subtract 78 from 316 you get 238.

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Genotype - RR - 25%, Rr - 50%, rr - 25% (1:2:1)

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<h3>How explain your answer?</h3>

Let the letter "r" stand for the alleles, where R is round seeds and r is wrinkled seeds. A genotype is an individual's genes represented through alleles. Phenotypes are how the genes express themselves. In other words, genotypes will be written using letters, the alleles, and phenotypes will be the possible outcomes of the alleles.

Both of the parent seeds have the genotypes Rr and the phenotype of round seeds.

If you create punnet square (which had four boxes in total) 1 will have RR, 2 will have Rr, and 1 will have rr. These are the ratios for the genotypes. Each box represents 25%, so the percentages will be 25, 50, and 25. Finally, 3 of these boxes (RR and Rr) will result in round seeds because those are dominant. Only the genotype rr will result in wrinkled phenotype. Therefore, the ratio is 3:1 or 75% to 25%.

Thus, this could be the answer.

To learn more about genotypes and phenotypes click here:

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