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Ede4ka [16]
3 years ago
13

ALL BUT ONE is a technique that can be used to prevent agricultural impacts on the Great Lakes waterways. A) Diverting the flow

of waterways to prevent them from coming in contact with agricultural lands. B) Cover crops are used to keep soil on the field during the non-growing season while improving soil health. C) Placed along waterways or drainage ditches, buffer strips can catch and retain sediment and excess nutrients. D) Conservation tillage: this is a practice that maintains a layer of vegetative residue that can help to protect the soil from erosion.
Biology
2 answers:
ollegr [7]3 years ago
4 0
A)  <span>Diverting the flow of waterways to prevent them from coming in contact with agricultural lands.Please don't forget to rate and thank me. Thank you</span>
gizmo_the_mogwai [7]3 years ago
3 0
The answer to the question is A
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Why does a deletion mutation usually cause more defects during protein synthesis than a point mutation?
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Answer: B

WHY?
Deletion mutation may cause a shift of base sequence, causing the reading frames for base sequence to change during translation. This may affect the type of amino acid it the original base sequence codes for, resulting in a change in amino acid sequence in the polypeptide translated. Therefore, affecting the whole protein itself. There may be wrong amino acids that prevents vital bonds like disulfide bridges to form, resulting in a huge change in 3 dimensional conformation of the protein. A point mutation may result in a gene sequence being edited. However, only the target sequence is being mutated. The rest of the gene sequences are left untouched. Therefore, the impact is localised. This ensures that even though a few wrong amino acids may be in the polyleptide, most of the bonds that are crucial for the correct 3 dimensional conformation is still present, therefore, lesser defects will be resulted due to point mutation as compared to deletion mutation.
5 0
3 years ago
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The map shows the allele frequency of sickled hemoglobin (HbS) and malaria endemicity in Africa.
ikadub [295]

When an area is malaria-free, the HbS allele frequency is between 0 and 2.02. Thus, option "A" is correct.

<h3>How, explain your answer briefly?</h3>

In the two maps that show the allele frequency of sickle haemoglobin (HbS) and malaria endemicity in Africa, it can be seen that in the regions with no malarial outbreak or malaria-free areas coincide with the grey to lighter shades of red in the heat map of the allele frequency of HbS. The colour coding in the heat map for the allele frequency tells us that the frequencies range from 0 to 2.02 in the malaria-free areas.

Hence the answer is A)When an area is malaria-free, the HbS allele frequency is between 0 and 2.02.

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Diffusion of water across a membrane from areas of higher concentration to areas of lower concentration is called
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British naturalist Charles Darwin is credited for the theory of natural selection. While he is indeed most famous, Alfred Wallace, simultaneously came to a similar conclusion and the two corresponded on the topic. change in heritable traits of a population over time.

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