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QveST [7]
3 years ago
12

Why is the sickle cell allele still common in tropical regions?

Biology
1 answer:
slavikrds [6]3 years ago
3 0
Sickle-cell disease is common in tropical and sub-tropical regions because being a carrier, carrying a single sickle-cell mutation (sickle cell trait), affords some resistance to malaria.
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Yarrow, bearded iris, and sea oats grow best in sandy soil. Therefore, how do you think they feel about water?
algol [13]

Answer:

B. Do not need much water, so they prefer soil that drains the water.

Explanation:

Sandy soil is one of the three basic soil types we have in nature (the others being loamy soil and clayey soil). One of the properties of the Sandy soil is its high water draining ability i.e. it has a low water holding capacity. This draining characteristics is due to the large pores that Sandy soils possess.

According to this question, three plants namely: yarrow, bearded iris, and sea oats grow best in sandy soil. This indirectly means that these plants mentioned do not need much water for their growth since they grow best in a soil that drains water efficiently.

4 0
3 years ago
What are the step involved creating a protein
Vlad1618 [11]

first step

A copy is made of one side of the DNA segment where a particular gene is located. This copy is transferred to the cytoplasm.  

second step?

This mirror like copy of a DNA segment is called messenger RNA (mRNA)

third step?

Each group of three bases on the mRNA segment codes for one amino acid.

fourth step?

The mRNA segment is fed through the ribosome.

fifth step?

Molecules of transfer RNA (tRNA) deliver amino acids from the cytoplasm to the ribosome.

sixth step?

The amino acids are dropped off at the ribosome.

seventh step?

The amino acids are joined to make a protein. Usually, one protein is produced for each gene.


7 0
3 years ago
Which body part is vestigial in humans?
Stels [109]

Answer:

The answer is the 2nd picture: the coccyx bone in humans.

Explanation:

Vestigial Structure:

Structures or anatomical features that do not currently serve a function is the bodily processes of a living organism. Vestiges are believed to have performed active functions in the organism's ancestors throughout its evolutionary history.

Coccyx Bone:

The coccyx or tailbone is an evolutionary remnant of our tree dwelling ancestors. Coccyx has no use in modern humans as we do not need to climb trees.

The coccyx in modern humans serves as an anchor for muscles.

5 0
3 years ago
How can I change in scientific technology affect scientific how can I change in scientific technology affect scientific knowledg
Sedbober [7]

by providing factual information to support the authors point of view

4 0
3 years ago
What nitrogen base is found on RNA but not DNA?
kumpel [21]
DNA<span> and </span>RNA<span> are both comprised of nucleotides that bind to a sugar backbone. The </span>DNA<span> nucleotide </span>bases<span> include adenine, cytosine, guanine and thymine. The </span>RNA <span>nucleotide </span>bases<span> include adenine, uracil, guanine and cytosine.</span>
8 0
3 years ago
Read 2 more answers
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