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azamat
3 years ago
13

If after several rounds of artificial selection all alleles affecting the trait are fixed or lost, the narrow-sense heritability

(h^{2}) of a trait is
Biology
1 answer:
Leviafan [203]3 years ago
8 0

Answer:

h^2 = 0

Explanation:

When trait variance is a result of additive genetic factors, it is referred to as 'narrow sense heritability' or h^2. This estimate falls within a range of 0 to 1. h^2 is significant in indicating the evolutionary potential of a certain trait under study. Heritability value close to zero means that the variation in that trait is predominantly a result of environmental factors.

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Explain what is meant by the term environmental justice.
Artemon [7]

Answer:

Environmental justice is the fair treatment and meaningful involvement of all people regardless of race, color, national origin, or income with respect to the development, implementation, and enforcement of environmental laws, regulations, and policies.

Explanation: During the Civil Rights Movement in the 1960s, activists participated in a social movement that created a unified atmosphere and advocated goals of social justice and equality. The community organization and the social values of the era have translated to the Environmental Justice movement

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3 years ago
What is the role of an indicator? predict how the glucose test strips and iodine would react to the following foods:
USPshnik [31]
The purpose of an indicator is to test  how acidic or basic something is.

4 0
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The __________________ pulp of the spleen contains lymphocytes and serves to fight pathogens, whereas the __________________ pul
STatiana [176]

Answer:

The given blanks can be filled with white pulp and red pulp.

Explanation:

In the lymphatic system, the spleen is considered as the largest organ. It is situated in the upper left part of the abdominal cavity, the main function of the spleen is to filter blood containing the destructed cells, pathogens like viruses and bacteria, and cellular debris.  

The spleen generates and develops the mature immune cells, which possess the tendency of finding and eliminating the pathogens. The white pulp of the spleen comprises the immune cells, that is, the B and T lymphocytes, which help in fighting against the pathogens.  

On the other hand, the red pulp of the spleen comprises connective tissue called the cords of Billroth, and various splenic sinusoids, which are filled with blood, providing it a red appearance. Its main function is to filter the blood containing microbes, pathogens, and worn-out or the defective RBCs.  

6 0
3 years ago
What is the advantage of having large vertebrae at the base of the vertebral
Anon25 [30]
It gives a better foundation for the top part of your vertebrae (that are smaller), as it is bigger, it can support the rest of your vertebrae better.
7 0
3 years ago
What are three species that can be raised (farmed) to take pressure off ocean species?
Juli2301 [7.4K]

Answer:

Seaweeds, shrimps, salmon

Explanation:

The rapid increase in the human population day by day has led to the increased usage of marine plants and animals. Due to this, the population f some marine plants and animals is declining to threatening levels.

To overcome his problem, scientists have devised the method of mariculture. This technique involves raising aquatic plants and animals in artificial lakes or ponds containing salty water just like in the oceans.

Some of these plants and animals are:

  1. Sea weeds: People might think that they do not consume sea weeds but it is actually present in most of our daily use products like toothpaste, ice creams and even in some automobiles. Many people from the world consume sea weeds as food. Hence, they are being raised in maricultures.
  2. Shrimps: Shrimps are favourite sea food among many people belonging to different areas. Hence, there population is declining due to which they need to be raised artificially.
  3. Salmon: The salmon is a kind of fish common to almost every nation. Hence, to meet the demands of people they need to be produced in maricultures.
4 0
4 years ago
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