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salantis [7]
3 years ago
11

Biologists use molecular clocks to try to measure _____.when a molecule was createdhow long molecules have existedwhen two speci

es separated from a shared ancestorwhen two species will merge to become one species
Biology
2 answers:
Salsk061 [2.6K]3 years ago
5 0
C) When two species separated from a shared ancestor
IRISSAK [1]3 years ago
4 0

The correct answer is C. When two species separated from a shared ancestor

Explanation:

In biology, the term "molecular clock" refers to a technique biologist use to study the origin of mutations that made one; species led to others. This implies through the molecular clock scientist can determine the evolution and species and the time in which two species separated from a shared ancestor or diverged. This technique relies mainly on biomolecular information based on sequences of DNA as differences in DNA between two species with a common ancestor marks the divergence of these species, also molecular clocks use the comparison of fossils to confirm evolutive divergence. Therefore, it can be concluded biologist use molecular clocks to try to measure "when two species separated from a shared ancestor".

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Answer:

The correct answer will be- ADH alters the reabsorption of water and RAAS leads to the reabsorption of sodium ions.

Explanation:

To maintain the osmolarity of the blood in the human body, the body activates the RAAS pathway and the production of ADH.

RAAS pathway gets activated when the receptors sense low blood pressure in the body. This activates the production of renin from the juxtaglomerular cells of the body which converts the angiotensin to angiotensin I and later angiotensin II.

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The Antidiuretic hormone helps regulate the low blood pressure by adding aquaporins to the distal tubule membrane which help absorb the water.

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