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Dvinal [7]
3 years ago
7

Natural selection chooses which variations become prevalent in a population through environmental pressures. Which of these is a

n environmental pressure which can lead to natural selection?
Biology
1 answer:
Maru [420]3 years ago
8 0
A drought could decrease an amount of food, or a competitor for the same food could.
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Which of the following statements about the cell cycle is correct? *
Crank

Answer:

DNA is not replicated during G2

7 0
3 years ago
Match the following terms to their definitions.
sukhopar [10]
1 is c 2 is d 3 is a 4 is b
7 0
3 years ago
When doing medical research with human subjects,which four limitaions are unavoidable
Illusion [34]

Answer:

There are ethical or privacy concerns to consider.

Explanation:

Human subject research is a systematic, scientific investigation that can be either interventional, a trial research or observational (test).

It is necessary to follow the Nuremberg code (1948) and have a voluntary informed consent, the research should be based on previous good results, on prior research, physical or psychological injury and harm should be avoided, benefits should outweigh risks, proper experience of a researcher is needed, right to withdraw consent, and research must stop if harm is arising.

In 1964, a guideline for medical doctors in biomedical research has been established by WMA (The World Medical Association). Helsinki declaration stated the ethical principles involving human subjects that was adopted.

In, 1982  International Ethical Guidelines for Biomedical Research Involving Human Subjects by the World Health Organization (WHO) and Council for International Organizations of Medical Sciences (CIOMS) has been established.  

According to Guidelines (2002) ethical justification and scientific validity of research, ethical review, informed consent, vulnerability ¬ of individuals, groups, communities and populations, women as research subjects, equity regarding burdens and benefits, choice of control in clinical trials, confidentiality, compensation for injury, strengthening of national or local capacity for ethical review, and obligations of sponsors to provide health-care services are outlined.

There are 4 most important principles of ethics such as autonomy, beneficence, non-malfeasance and justice.

Ethical Review Board (ERB) is a committee that has been formally designated to approve, monitor, and review biomedical and behavioural research involving humans. It aims to protect the rights and welfare of the research subjects.  The ERB must have at least five members. The members must have enough experience, expertise, and diversity. If the ERB works with studies that include vulnerable populations, the ERB should have members who are familiar with these groups. The ERB must include at least one person who is not affiliated with the institution or in the immediate family of a person affiliated with the institution.  ERB members may not vote on their projects. The ERB may include consultants in their discussions to meet requirements for expertise or diversity, but only actual ERB members may vote.

4 0
3 years ago
Which of the following mechanisms is the correct sequence of events that takes place during the plant responses to internal and
patriot [66]

Answer:

C) reception, transduction, and response

Explanation:

Plant signaling means that information is conveyed from receptor systems to effectors within and between plant cells.

Signals can be of chemical form or electrical form.

Plant responses to internal and external signals take place in the following sequence:

Reception

Transduction

Response

So, option C) is correct

7 0
3 years ago
Migration of a random few individuals from one population to a new area to establish a new population is an example of:_________
NARA [144]

Founder effect is the example of migration of a random few individuals from one population to a new area to establish a new population.Thus, option C is correct.

What is migration?

Migration is defined as movement of individuals from one place to another in search of employment and livelihood.Some people lives permanently after migration and some returns back to the native place.

Internal migration is the type of migration in which people migrate within state and country.

External migration is the migration to different state and country.

The phenomenon of moving into new place is known as immigration.

Seasonal migration is the migration in which animals or humans migrate in a particular season due to climatic condition.

Therefore,migration of a random few individuals from one population to a new area to establish a new population is an example of founder effect.

Learn more about migration here:

brainly.com/question/2180770

#SPJ4

The question is seems to be incomplete the question is may be like that

Migration of a random few individuals from one population to a new area to establish a new population is an example of _

A) bottleneck effect

B) mutation

C) founder effect

D) selection

8 0
2 years ago
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