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1 answer:

4 0

The discovery by JJ Thompson who proved that all electrons are the same thus changed Dalton's atomic theory

I hope this helps

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How does the enzyme telomerase meet the challenge of replicating the ends of linear chromosomes?

maxonik [38]

Answer:

The correct answer is C) It catalyzes the lengthening of telomeres, compensating for the shortening that could occur during replication without telomerase activity.

Explanation:

While replicating, the ends of the chromosomes always lose a part of the ends, therefore, the telomerase catalyzes this growing process, somehow compensating the information that will be lost.

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3 years ago

What term is used to describe the crust and uppermost part of the mantle?

11111nata11111 [884]

The LITHOSPHERE is the rocky outer part of the earth , is is made up of the brittle crust an top of the mantle.

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3 years ago

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What is a hominid? A)a family of tree-swinging monkeys B)a family of baboons C) a family of primates that include humans D) a fa

suter [353]

Answer:

the real answer is a family of bipedal primate.

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3 years ago

How are hormones and prostaglandins similar? how are they different?

solniwko [45]

Prostaglandin similarity with hormones is in the effect they achieve by binding to the receptors. Their effects are mediated by paracrine or autocrine mechanisms. Another hormone characteristic is the ability to stimulate adenylate cyclase activity, producing cAMP as the second messenger.
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On the other hand, prostaglandins differ from hormones in that they are not produced at a specific place but in many different places throughout the body. Also, the metabolic degradation of prostaglandins is very rapid.</span>

5 0

3 years ago

If you know that a population is 75% the dominant phenotype and 25% is the recessive phenotype, can you determine approximately

Andreyy89

If dominant allele = p, and recessive allele = q,
and p+q = 1, then:
${(p + q)}^{2} = {p}^{2} + 2pq + {q}^{2} \\ where \: {p}^{2} \: is \: homozygous \: domin \\ {q}^{2} \: is \: homozygous \: recessive \\ and \: 2pq = heterozygous$
So if 75% have the p, then p^2 = homozygous dominant
${p}^{2} = {(.75)}^{2} = .5625$
And if the other 25% have the q, the q^2 = homozygous recessive
${q}^{2} = {(.25)}^{2} = .0625$
Now those remaining MUST be the heterozygous, thus 2pq are those:
2pq = 2(.75)(.25) = .375

Therefore homozygous dominant are 56.3% and heterozygous are 37.5%

8 0

4 years ago