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snow_tiger [21]
3 years ago
9

How do biologists define a population ?

Biology
1 answer:
inn [45]3 years ago
6 0
Biologist define population as when group of living things of only one specie lives in the same surrounding. As in taxonomy.
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How might a dramatic decrease in vegetation lead to a decrease in a prey species?
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4 years ago
Complete the Punnett square for the following cross-pollination and give the genotypic and phenotypic ratios: for white (WW) and
hammer [34]

Answer:

Phenotypic ratio= 1:1

Genotypic ratio = 1:1

Explanation:

This is a monohybrid cross involving a single gene that specifies a color phenotype.

According to the question, WW, which is homozygous dominant i.e same allele is white while ww, which is homozygous recessive is black.

Hence a genotype Ww will possess a white phenotype since the W allele will mask the expression of w.

In a cross between a female and male with a a Genotype Ww and ww respectively. The parents alleles will be separated into gametes according to Mendel's law of segregation. (See attached image).

Ww will produce gametes W and w

ww will produce gametes w and w

The four possible offsprings will have Ww (2) and ww (2) genotypes. Hence two of them will be white while two will be black.

Hence, the phenotypic ratio will be 1:1 while the genotypic ratio will also be 1 Ww: 1 ww

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