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Mariana [72]
3 years ago
11

Starfish, sea stars, and sea urchins are classified as echinoderms. What does the prefix "echin-" mean?

Biology
1 answer:
faltersainse [42]3 years ago
8 0

Answer:

The prefix "echin-" means D. The prefix "exo" means outside/external.

Explanation:

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Answer: Exploitation, invasive species

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If laws prohibiting introduction of new plant or animal species within the country are passed, it will curb the effect of invasive species would have on the seas. Invasive species are those living species which are arrive or immegrate to new locations in search of resources. These species compete with native species which results in decline of native species. This will result in disturbance in actual sea biodiversity as this will result in decline in native sea species and may also lead to extinction of native species.

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3 years ago
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True or False: Modifier 25 may be reported by hospital and physician (or other qualified healthcare professional) to indicate th
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Answer:

True

Explanation:

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7 0
3 years ago
In a hypothetical population of plants, flower color is determined by a single gene with two alleles. In a population of 500 pla
blondinia [14]

Answer:

In the F1 generation

RR = 0%

Rr = 50% (or 0.5)

rr = 50% (or 0.5)

Explanation:

A pink flowering plant has the genotype Rr. It is heterozygous for the allele. The alleles for this gene appears to show incomplete dominance, as the heterozygous phenotype is a blend of the two homozygous genotypes.

A white flowering plant has the genotype rr. It is homozyogous for the white allele

A punnet square of the cross is shown.

The resulting punnet square shows that only Rr and rr genotypes are possible, at a ratio of 50:50 (or 1:1). Therefore, the genotype frequency of Rr is 50%, and rr is 50% in the F1 generation. This can also be written as 0.5. It is not possible to get a red plant, as the genotype RR can not come from this cross

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I recommend reading a passage about it. Hope this helps!
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