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lesya [120]
3 years ago
9

Please help me 1.2.3.or 4. I need this

Biology
1 answer:
Pepsi [2]3 years ago
8 0

Answer:

2) a feedback mechanism that regulates blood glucose level

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If there are no animal cells, then life on earth would not exist. Also plants would dominate.

Explanation:

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The symmetry exhibited by adult echinoderms is ______________.
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Select all that apply. Factors that can increase mutation rates are _____. high temperatureslow temperaturesfood additivesUV ray
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You cross purple-flowered and white-flowered pea plants, and all offspring are purple. how come? select one:
Vaselesa [24]
To solve this problem on genetic dominance, we will need a punnet square.

Let's let P represent purple-flowered and p represent white-flowered.

We have one purple flowered plant with the alleles PP, and we have one white flowered plant with the alleles pp. Using a punnet square, we can determine the alleles of the offspring.

       <u>P</u>     <u>P</u>
p|    Pp   Pp

p |   Pp   Pp

As we can tell from our punnet square, all of our offspring will have purple flowers. This is because the purple-flower allele is dominant and the white-flowered allele is recessive.

Since each flower has a dominant and recessive allele, they are heterozygous.

Therefore, the solution to this problem is D.
3 0
3 years ago
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