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larisa [96]
3 years ago
10

Help.. Psychological drug dependence means that

Biology
1 answer:
belka [17]3 years ago
6 0

Answer:

b. a person has an emotional need for a drug

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By genetic modification and evolutionary processes, biodiversity is increased and decreased by habitat loss, population reductio
oksano4ka [1.4K]

Answer:

Genetic Modification is a procedure to change the qualities of a plant, creature or miniature life form by moving a bit of DNA from one living being to an alternate living being. This is done through focused expulsion of the ideal qualities from the DNA of one living being and adding them to the next living being. This strategy has for instance been utilized to create growths and microorganisms that produce drugs.

Evolution is the cycle by which current creatures have dropped from old progenitors. Evolution is liable for both the surprising similitude we see over all life and the astonishing variety of that life.

Explanation:

Evolution is change in the heritable qualities of organic populaces over progressive ages. These attributes are the statements of qualities that are given from parent to posterity during generation. Various attributes will in general exist inside some random populace because of transformation, hereditary recombination and different wellsprings of hereditary variety. Evolution happens when transformative cycles, for example, regular choice (counting sexual choice) and hereditary float follow up on this variety, bringing about specific qualities getting more normal or uncommon inside a populace.

It is this cycle of development that has offered ascend to biodiversity at each degree of natural association, including the degrees of species, singular life forms and atoms.

8 0
3 years ago
PKU (Phenylketonuria) is an autosomal recessive disease, in which the synthesis of amino acid Tyrosine from Phenylalanine is blo
prisoha [69]

To calculate the frequency of the heterozygote genotype (Pq) for this gene we must use the Hardy-Weinberg equation ( p2 + 2pq + q2 = 1 ). This equation relies on the Hardy-Weinberg principle, a model in population genetics that states that the frequency of the alleles in a population is never changing, only the combinations (the genotypes) are changing.

If there are only two alleles (variations) of this gene in a population, then their frequencies should add up to 1 (100%). From this, we can calculate the frequency of the q allele.

p +q=1

0,3 +q=1

q= 1-0,3

q= 0,7

Now hat we have the frequency of the q allele we can use the HW equation to calculate the frequency of the heterozygotes.

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

(0,3)^{2} + 2pq +(0.7)^{2} = 1

0,09 + 2pq +0.49= 1

2pq +0,58= 1

2pq= 1-0.58

2pq=0,42

The freqency of the heterozygotes in this population is 0.42

6 0
3 years ago
People with type o blood are considered universal donors for transfusions because __________.
klio [65]
All types of blood can accept it
6 0
3 years ago
Would an Egyptian pyramid that is 4500 years old be considered a fossil?
lara [203]

An Egyptian pyramid that is 4500 years old will be considered as a fossil in this scenario.

<h3>What is a Fossil?</h3>

This is defined as trace of an animal or plant of a past geologic age that has been preserved in Earth's crust.

Since it has been discovered that the egyptian pyramid contains thousands of marine fossils then it can be generally referred to as a fossil.

Read more about Fossil here brainly.com/question/11829803

#SPJ1

8 0
2 years ago
The angle of reflection is the angle between the normal line and the
KatRina [158]

Answer:

Reflected ray

Explanation:

The angle between a reflected ray and the normal drawn at the point of incidence to a reflecting surface is the angle of reflection.

8 0
3 years ago
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