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lapo4ka [179]
3 years ago
7

If you categorize humans into large groups based on physical characteristics such as facial features and hair texture, you are r

elying on which form of categorization?
Biology
1 answer:
wel3 years ago
7 0

If you categorize humans into large groups based on physical characteristics such as facial features and hair texture, you are relying on which form of categorization?

A. political identity

B. race

C. class- consciousness

D. ethinicity

Answer:

B. Race

Explanation:

Human races are the distinct human populations that are classified and are different from each other with respect to one or other morphological traits. It generally takes into account of the traits such as skin color, hair structure, etc. Mongoloid and negroids are two races of the human that are found in distinct geographical regions and exhibit some distinct traits that are not expressed in the humans of other races. This classification does not consider the ability of mating to produce fertile progeny.

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Sometimes characteristics are not heritable but are environmentally influenced. describe three characteristics that are not inhe
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<h2>Answer:</h2>

Approximately all characteristics are inheritable but some characteristic of our body is affected by the external environment.

<h3>Growth:</h3>

Growth is the basic property of a living organism. It can be controlled by the genes like height. But mainly it is dependent on the available nutrients to the body. So a healthy environment with all necessary nutrients leads to healthy perfect growth of the body.

<h3>RB C count:</h3>

Red blood cells counts also effected by environment. The environment which has a sufficient amount of oxygen leads to low blood count as compared to an environment with low oxygen which leads to high red blood cell count.

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4 years ago
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A scientist observed the formation of hundreds of maggots and many flies on a rotting meat slice exposed to the environment. Wha
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3 0
4 years ago
An autosomal recessive disease has an incidence of 1/10,000. What is the approximate frequency of heterozygote carriers for this
goblinko [34]

Answer:

Option B

Explanation:

Given

Number of incidences or frequency of an autosomal recessive disease = \frac{1}{10000}

As per Hardy Weinberg's equation, frequency of a recessive genotype is q^{2}

q = \sqrt{\frac{1}{10000} }\\ q = \frac{1}{100}

As per first equation of Hardy Weinberg's -

p+q=1

so ,

p = 1-q\\p = 1-\frac{1}{100}\\p = \frac{99}{100}

p^2 = (\frac{99}{100})^2\\p^2 =\frac{9801}{1000}

As per second equation of Hardy Weinberg's -

p^{2} + q^{2} + 2pq=1

Substituting the given values in above equation, we get -

\frac{9801}{10000} + \frac{1}{100} + 2pq=1\\2pq = 1-(\frac{9801}{10000} + \frac{1}{100})\\2pq = 0.99%\\OR[tex]2pq=1%

2pq = \frac{1}{100}

Hence, option B is correct.

8 0
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