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Over [174]
3 years ago
6

An individual who displays the disease sickle-cell anemia must have inherited the deleterious allele from both phenotypically no

rmal parents. This individual is therefore
Biology
2 answers:
Phantasy [73]3 years ago
6 0

Answer: The individual is homozygous recessive.

Explanation:

Sickle cell anaemia is an inherited blood disorder in which there is not much available red blood cells to carry oxygen.

The individual is homozygous recessive because such inherited the two deleterious allele SS.

For an individual to have inherited sickle cell anaemia from the parents, it means the two parents are carriers.

The father have AS gene and the mother have AS gene which is the carrier of sickle cell anaemia gene, the individual inherited the deleterious alleles from the phenotypically normal parents.

Dvinal [7]3 years ago
5 0

Answer:

Homozygous recessive

Explanation:

The parents of the individual displaying the sickle cell anemia (SS) are phenotypically normal parents meaning, both parents are carriers of the (AS) gene which is a recessive trait for sickle cell anemia.

The individual took up the SS allele from both parents which makes him/her homozygous recessive. An individual is said to be homozygous recessive if that individual carries two copies of the same recessive allele.

Homozygous dominant is when an individual carries two copies of the same dominant allele (e.g AA).

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which pattern of inheritance is responsible for a wide range of phenotypes that result from the individual organisms having many
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The answer is polygenic inheritance.

Polygenic inheritance is responsible for traits that are controlled by two or more genes. It is also called multiple gene inheritance. Examples of polygenic inheritance are height, weight, skin color, eye color.
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3 years ago
A man who heavily smokes has developed lung cancer. The tobacco smoke has caused mutations in some of the cells in his lungs, ma
nexus9112 [7]

Answer:

If he inherited a mutation which made him more susceptible to lung cancer, it may have been present in some of the gametes he produced and passed to his children

Explanation:

Even tho the cause of lung cancer is not very clear, a genetic predisposition is of a great influence, his smoking and therefore causing a lung cancer is not appliable to his children because of no connection, but in the sense of having a mutation which makes you predisposable to the cancer with or without the smoking, can lead to a high risk of gene inheritance and therefore inheriting the mutation with a high risk of getting lung cancer excluding the smoking.

3 0
2 years ago
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Most fat-soluble nutrients are absorbed in the _______ system. Question 19 options: vascular lymphatic neurological adrenal
Leya [2.2K]

Most fat-soluble nutrients are absorbed in the Lymphatic system.

<h3>What is Lymphatic System?</h3>

A network of tissues, veins, and organs known as the lymphatic system collaborates to transport lymph, a colorless, watery fluid, back into your circulatory system (your bloodstream).

Your body's arteries, smaller arteriole blood vessels, and capillaries each day carry about 20 liters of plasma. About 17 liters are then returned to the circulation through veins after providing nourishment to the body's cells and tissues and collecting their waste products. The remaining three liters permeate your body's tissues via capillaries. The lymphatic system gathers this extra fluid, which is now known as lymph, from your body's tissues and transports it to various locations before returning it to your bloodstream.

To learn more about Lymphatic system with the help of the given link:

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3 0
2 years ago
How do enzymes influence the amount of activation energy needed?
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What your cells have to help overcome a problem of high activation energy are called enzymes. Enzymes are proteins that lower the activation energy of a reaction. In doing this, enzymes increase the rate of a reaction, helping it to occur faster. However, enzymes are not consumed in a reaction; they simply help it to occur.

Enzymes make things easier for your cells to work properly and help chemical reactions occur. There are hundreds of different kinds of enzymes in your cells, which all participate in different types of reactions. Enzymes can break molecules apart, build or add molecules, and even rearrange them.

In lowering the activation energy of a reaction, enzymes decrease the barrier to starting a reaction. It's important to note, however, that the change in energy remains the same between the start and end of a chemical reaction.

8 0
3 years ago
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Which of the following macromolecules a
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Answer:

B carbohydrates

Explanation:

Your cells convert carbohydrates into the fuel molecule ATP through a process called cellular respiration.

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