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8_murik_8 [283]
3 years ago
12

According to endosymbiosis theory, host archaea engulfed ___, which then allowed both popopulations to survive together.

Biology
1 answer:
pav-90 [236]3 years ago
5 0
<span>According to endosymbiosis theory, host archaea engulfed aerobic bacteria, which then allowed both populations to survive together. Aerobic Bacteria grow in the presence of oxygen to oxidize glucose where water is produced. They are the largest and most common cause of clinical infections, such as tuberculosis. In contrast, anaerobic bacteria/organisms do not require oxygen for growth and may, in fact, die as a result of too much oxygen. </span>
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If biological species are defined in terms of reproductive compatibility, the formation of a new species hinges on ________.
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  • <u> Option-(B): </u> If biological species are defined in terms of reproductive compatibility, the formation of a new species hinges on <u>reproductive isolation.</u>                            

Explanation:

  • There is diversity among being and we see that millions of species roam the face of land, all this happens in the tenure of centuries. While the process of evolution or creation of new species happens when a certain specie is kept inside such an environment or a very unique environment that the species is tempted to cross with another form of organism belonging to a different specie, so, this process initiates the creation of new species or organisms having a very different set of characteristics as compared to there ancestors.
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20. Overpopulation could result in a lack of food where many people starve to death. What is this called?
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Famine

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There are 3 possible genotypes: NN, MN, or MM. In a group of 500 people, the frequency of genotype NN is 40%. How many individua
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235 are the Individual numbers that would expect to have the MN type of genotype.

There are two equations necessary according to Hardy-Weinberg Equilibrium:-

<em>p</em> + q = 1

p² + 2pq + q² = 1

Let,

NN= p

NM=2pq

MM=q

So, according to the question, the frequency of genotype NN is 40%

40% of 500 = \frac{500*40}{100} = 200 Numbers of individuals

Frequency of individuals <em>p </em>= \frac{Numbers of individuals}{Total populations} = \frac{200}{400} = 0.4

Find <em>p</em>² by taking the square root of <em>p</em>.

√(<em>p</em>) = √(0.4)

= 0.632

So, <em>pp + qq = 1  </em>

<em>qq</em> = 1 - <em>pp </em>=  1 - 0.63

q = 0.37

The allele frequencies in the population are known, now finding the frequency of heterozygous genotype.

By Multiplying<em> 2 × p ×q  </em>to get heterozygous genotype

<em>2pq =  2 × 0.63 × 0.37` = 0.47</em>

<em>2pq = 0.47</em>

<em>So, 2pq × total population = 0.47 × 500 = 235, NM genotype.</em>

Learn more about Hardy-Weinberg Equilibrium here,

brainly.com/question/16823644

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