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BARSIC [14]
3 years ago
8

At what age level do most people become aware of the changes in their bodies related to the aging process?

Biology
1 answer:
AURORKA [14]3 years ago
3 0

The question is incorrect as it does not have the option which are:

a) early adulthood

b) middle adulthood

c) late adulthood

d) central adulthood

Answer:

B) middle adulthood

Explanation:

Ageing refers to the accumulation of natural physical, social and psychological changes in human beings.

The signs of the ageing like the wrinkles, the gain of the weight, growth of grey hairs, loss of hearing, arthritis and other disorders start appearing in the middle age or the age between 40 to 65 years.

Since the physical changes take place during the 40 to 65 years which is considered the middle adulthood, therefore, B is the correct answer.

Thus, Option-B is the correct.

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An organism's _______ is its observable characteristics, or its outward appearance.
Anna71 [15]

Answer:

C-Phenotype

Explanation:

Phenotype refers to the actual characteristics of an organism (eg. black fur). Think "physical" or ph to remember it.

Genotype refers to the alleles that are passed down (eg. Bb). For example one parent could have white fur and an other black fur, but the actual phenotype would be the black fur.

I hope my answer was clear!

7 0
3 years ago
Read 2 more answers
A researcher is studying a newly discovered gene that causes increased body weight in domesticated chickens. In a mainland popul
Dima020 [189]

Answer:

0.382

Explanation:

In solving this, let's recall the Hardy-Weinberge's equations which are as follows: p + q = 1; p^{2} + 2pq + q^{2} = 1 , where p represents the dominant Allele, while q represents the recessive allele. In applying this to what we want to calculate, p^{2} = A1A1, 2pq = A1A2, and q^{2} = A2A2.

Using the Hardy-Weinberge's equations, we can determine the number of individuals having the different types of genotype inherent in the 100 mainland chicken that was transported.

Since p + q = 1, i.e. given that allele frequency of A1 is 0.2, therefore allele frequency for A2 = 0.8 (p + q = 1).

Using  p^{2} + 2pq + q^{2} = 1, we would have the following:

p^{2} = A1A1 = 0.2^{2}  = 0.04

2pq = A1A2 = 2(0.2*0.8) = 0.32

qx^{2} = A2A2 = 0.8^{2} = 0.64

Therefore, number of mainland chickens with the A1A1 genotype = 0.04*100 = 4; A1A2 = 0.32*100 = 32; A2A2 =0.64*100 = 64

The genotype frequencies for the admixed population would be the sum of that of the transported mainland chicken and that of the isolated chicken, which would be:

Genotype       mainland      isolated      Total    No of A1 allele present

A1A1                      4                200           204                204

A1A2                     32              400           432                216

A2A2                    64              400           464                  0

Total                                                         1100                420

Therefore, allele frequency of the A1 allele in the admixed population = 420/1100 = 0.382

4 0
3 years ago
Excess lead in the blood deranges the structure of red blood cell membranes, making them leaky and fragile.
Dafna1 [17]
The answer would be: <span>a. True 

Lead cannot be degraded by human body so it will easily be accumulated. It can disrupt the structure of the cells and make their membrane fragile. This might cause the cell to lysis. It will also make the white blood cells to produce more inflammatory protein and linked to asthma in children.</span>
5 0
4 years ago
When hot, many mammals sweat to control their body temperature. evaporation contributes to temperature moderation, but mammals'
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The absorption of heat by the breaking of hydrogen bonds, think homeostasis or h<span>ypothalamus.</span>
7 0
3 years ago
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Nuclei of atoms that make up a newborn baby were made in the
goldfiish [28.3K]
<span>Nuclei of atoms which make up the newborn baby were made in ancient stars.

Ancient stars exploded many years ago and this is the same nuclei where newborn babies are being made.</span>
8 0
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