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MA_775_DIABLO [31]
3 years ago
14

8. In the 1940s, the scientist J.B.S. Haldane linked many human red blood

Biology
1 answer:
nadya68 [22]3 years ago
6 0

Answer:

b. The individual's' genetic composition

Explanation:

Natural selection is an occurrence in nature in which organisms with genes that have mutated to adapt to certain ailments, survive better than their mates. J.B.S Haldane made a hypothesis that this phenomenon of natural selection accounted for why people in Africa had developed resistance to malaria. Their hemoglobin, proteins, and other compounds that are necessary for the function of the red blood cells had been modified so that they would not easily be infiltrated by malaria parasites.

A.C. Allison confirmed this in his experiment which showed that people who had sickle cell mutations in the gene, beta hemoglobin were mostly found in regions where malaria was prevalent. Their genes had also been modified such that they were resistant to malaria.

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Darwin explained that all life came from ________________
AnnZ [28]

Answer:

one common ancestor

Explanation:

Although Darwin’s theory is often described as the theory of evolution by natural selection, most commentators recognize that common ancestry (the idea that all organisms now alive on earth and all present day fossils trace back to one or a few “original progenitors”) is an important part of the Darwinian picture.

3 0
3 years ago
Astronomers believe that the _____ the star, the _____ its lifespan.
arsen [322]

Answer:

Astronomers believe that the larger the star, the shorter its lifespan.

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3 years ago
Some fossil snakes have remnants of hip bones and legs even though these animals had no legs. These remnant structures are best
Nina [5.8K]

Some fossil snakes have remnants of hip bones and legs even though these animals had no legs. These remnant structures are best described as:<u> vestigial structures</u>.

Vestigial structures are organic structures that do not appear to fulfill any important biological function in the organism that possesses them.

  • These structures are preserved as an inheritance of the evolutionary process, because at some point in the history of evolution an ancestor of the current species had that structure.

  • These types of structures, which can be bones, organs, structures in the skin or any other part of the body, no longer offer any meaningful function for the body.

  • The presence of vestigial structures in animals is considered proof that evolution and natural selection exists.

Therefore, we can conclude that some fossil snakes have remnants of hip bones and legs even though these animals had no legs. These remnant structures are best described as vestigial structures.

Learn more here: brainly.com/question/3217893

4 0
3 years ago
Help meee plsss I wanna cry
Sonja [21]

Explanation:

Amount of water the water park uses per day

3 0
3 years ago
Define term biochemistry​
aleksklad [387]

Answer:

Biochemistry is the branch of science that explores the chemical processes within and related to living organisms. ... Biochemistry focuses on processes happening at a molecular level. It focuses on what's happening inside our cells, studying components like proteins, lipids and organelles.

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3 years ago
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