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uysha [10]
3 years ago
15

How does a crab moves,and why​

Biology
1 answer:
tino4ka555 [31]3 years ago
4 0

Answer:

Most crabs usually stroll on the beach by walking sideways. But crabs can also walk forward, backward and diagonally. Because crabs have stiff, jointed legs, they move faster and easier walking sideways. ... A crab walking sideways pulls itself along with one set of legs and pushes with the other.

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The genetic information of a prokaryotic cell may best be described as:
Inga [223]

Answer:

2. Circular, looped, folded, single stranded DNA known as the bacterial chromosome

Explanation:

The bacterial chromosome of a prokaryotic cell, does not occur in the typical X chromosome found in eukaryotic cells, but it is a long folded and looped molecule composed of double-stranded supercoiled DNA. In this case, DNA occurs freely and covalently closed in a circular shape in the cytoplasm and it does not bind with proteins.

6 0
4 years ago
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What are two methods of passive transport
Aleksandr-060686 [28]
1. simple diffusion. 

<span>2. facilitated diffusion.

i think</span>
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3 years ago
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Read the statements below and write true or false. If the statement is false, rewrite the statement to make it true.
Hunter-Best [27]

Answer:

1.False

2.True

3.True

4.False

5.True

Explanation:

7 0
3 years ago
What is the name for a substance that keeps<br> the pH in cells within the 6.5 to 7.5 pH range?
joja [24]

Answer: Neutral

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“6.5 to 7.5—neutral. over 7.5—alkaline. less than 6.5—acidic, pH less than 5.5 are considered strongly acidic.“

3 0
3 years ago
A fruit fly population has a gene with two alleles, a1 and a2. tests show that 70% of the gametes produced in the population con
maksim [4K]
The answer is 0.42.

According to the Hardy-Weinberg equilibrium:
p + q = 1
p² + 2pq + q² = 1
where p is a frequency of a1 allele, q is a frequency of a2 allele, p² is a frequency of a1a1 genotype, 2pq is a frequency of a1a2 genotype, q² is a frequency of a2a2 genotype.

If <span>70% of the gametes produced in the population contain the a1 allele, then:
p = 70% = 0.7.
If p = 0.7 and p + q = 1, then q = 1 - p = 1 - 0.7 = 0.3

So, the proportion of </span>the flies that carry both a1 and a2 (a1a2 genotype) is:
2pq = 2 * 0.7 * 0.3 = 0.42
7 0
4 years ago
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