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Vika [28.1K]
3 years ago
7

Hi!:) can you please complete this for me? i’m a little confused.:)

Biology
1 answer:
Leya [2.2K]3 years ago
8 0

1. The sun

2. Chemical energy

3. Photosynthesis

4. Store

5. release

6. Cellular respiration?

Last one I'm not 100% sure.

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Describe the three lines of defense your body has for protection against invaders
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1. physical and chemical barriers

2.non-specific innate response

3. specific adaptive responses

Explanation:

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What are <br>principle basis on classification​
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Classification is a systematic ordering of the object of research, in this case, ecosystems at the earth's surface or, in other words: landscape units as 'holons'. As for general principles of classification, we can learn a lot from the best-known classification, the taxonomical classification of species.

Explanation:

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This is more of a psychology question but why does the mind procrastinate and what helps it stop?
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4. The elbow is located _________________ to the wrist.
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6 0
3 years ago
In a certain group of African people, 4% are born with sickle-cell disease, an autosomal recessive disorder. Heterozygous indivi
love history [14]

Answer:

the correct answer is C) 32%

Explanation:

Sickle-cell anaemia is an autosomal recessive genetic disorder. Individuals with the homozygous recessive have sickle-shaped blood cells. Whereas, individuals with heterozygous are only carrier of sickle cell trait. The carrier individuals are resistant to malarial parasite and do not have malaria.  

As per the question, 4% of an African population is born with sickle-cell disease, then the percentage of the population is heterozygous and resistant to malaria will be:  

Hardy-Weinberg formula is equilibrium,

        p² + 2pq + q² = 1  

p = frequency of the dominant allele in the population

q = frequency of the recessive allele in the population

p2 = percentage of homozygous dominant individuals

q2 = percentage of homozygous recessive individuals

2pq = percentage of heterozygous individuals

Given, homozygous recessive for this gene (q2) is 4%  which is 0.04, the square root (q) is 0.2 (20%) then p should be 1-0.2 = 0.8 (20%).  

Thus, the frequency of heterozygous individuals = 2pq.  

2 (0.8 x 0.2) = 0.32 (32%).  

4 0
3 years ago
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