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liberstina [14]
3 years ago
11

The cholodny-went hypothesis has been proposed to explain how plants bend toward a directional light source. What does this hypo

thesis suggest?
Biology
1 answer:
ololo11 [35]3 years ago
7 0

Answer:

The cholodny-went model was proposed in 1927. This model explains the capability of the shoots to grow in the direction of the sunlight whereas the capability of the roots to grow downwards. The hypothesis suggested that both these directional growth occurred due to the asymmetrical distribution of the plant hormone, auxin. This model has been modified a number of times by other scientists but its general concept is accepted by most of the researchers.

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Answer:

Sickle cell disease is due to a type of substitution mutation.

Explanation:

Sickle cell disease is a condition that is transmitted from parents to children in an autosomal recessive inheritance pattern. It is due to a mutation that is capable of altering the shape of the erythrocyte, as well as its ability to circulate and carry oxygen.

The mutation that occurs in sickle cell disease is due to an alteration in the β-chain of hemoglobin, caused by the substitution of thymine base by adenine in the DNA that determines it. As a result, valine replaces glutamic acid in the β-chain amino acid sequence, with the consequences described.

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This is a biological molecule which consist of amino acids and is involved in the growth and repair of body tissues.

Protein are involved in muscle growth but the main consideration is by performing exercises which will help build up the muscles.

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