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swat32
3 years ago
5

Evolutionary relationships between organisms are determined by.

Biology
2 answers:
Georgia [21]3 years ago
4 0

Answer:

hope you like it

Explanation:

A molecular clock determines evolutionary relatedness by examining how many mutations or random changes in DNA, there are between two organisms. When we map the relatedness of different organisms, we are creating a phylogenetic tree. At some point, all organisms that are alive today shared a common ancestor.

sweet-ann [11.9K]3 years ago
3 0
A molecular clock determines evolutionary relatedness by examining how many mutations or random changes in DNA, there are between two organisms. When we map the relatedness of different organisms, we are creating a phylogenetic tree. ... At some point, all organisms that are alive today shared a common ancestor.
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Stolb23 [73]

Answer:Its photosynthesis

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3 years ago
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after light excites electrons and they leave Photosystem II to travel down the first electron transport chain. How are these ele
umka2103 [35]

Answer:

Through the photolysis of water molecules

Explanation:

<em>When the electrons in photosystem II gets excited, released and travel down to the electron transport chain, the electrons are replaced by the electron released by the cleavage/photolysis of water.</em>

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3 years ago
An experiment testing the hypothesis that nitrogen markers shoot farther than carbon dioxide markers resulted in conflicting tes
Natasha_Volkova [10]

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They should think of an alternative explanation for their results.

Explanation:

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In scientific researches, the results of a hypothesis generally do not get the expected results but this leads to new findings and discoveries.

3 0
3 years ago
I attached the problem below.
kkurt [141]
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3 years ago
The ratio of estrogen to progesterone remains constant throughout pregnancy into labor. false/true
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False,

In order to start labor, estrogen increases and progesterone decreases.

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Progesterone is a member of the progestin drug class (female hormones). By lowering the level of estrogen in the uterus, it functions as a component of hormone replacement treatment. By substituting for the natural progesterone that some women lack, it helps to initiate menstruation.

To know more about pregnancy, click on the below link,

brainly.com/question/14353919

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5 0
2 years ago
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