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lara [203]
3 years ago
12

Please help and explain.

Biology
1 answer:
horsena [70]3 years ago
4 0
I got you :)


The molecular clock (based on the molecular clock hypothesis (MCH)) is a technique in molecular evolution that uses fossil constraints and rates of molecular change to deduce the time in geologic history when two species or other taxa diverged. It is used to estimate the time of occurrence of events called speciation or radiation. The molecular data used for such calculations is usually nucleotide sequences for DNA or amino acid sequences for proteins. It is sometimes called a gene clock or evolutionary clock.
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Where does climate change will impact<br> land animals?
adell [148]

Climate variability and change affects birdlife and animals in a number of ways; birds lay eggs earlier in the year than usual, plants bloom earlier and mammals are come out of hibernation sooner. Distribution of animals is also affected; with many species moving closer to the poles as a response to the rise in global temperatures. Birds are migrating and arriving at their nesting grounds earlier, and the nesting grounds that they are moving to are not as far away as they used to be and in some countries the birds don’t even leave anymore, as the climate is suitable all year round.

3 0
3 years ago
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After crossing purebred red (dominant) and purebred white (recessive) flowers, pink flowers appeared. Using symbols, show the cr
-Dominant- [34]
Since after crossing a red and a white flower produced pink flowers, the red color trait shows an incomplete dominance and has a genotype of Rr.
Using the Punnett to determine the cross between pink and white flowers:
   |   R   |   r   |
r  |  Rr  |   rr   |
r  |  Rr  |   rr   |

The results indicate that the cross between pink and white flowers will produce a ratio of 1:1

Rr x rr
3 0
3 years ago
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What is the main term and essential modifier in the alphabetic index
Setler79 [48]

Answer:

Main term is acute myocardial infarction

Essential modifier is heart attack

Explanation:

It should be understood that essential modifiers appear next to a lead term or as subterms indented below lead terms in the alphabetical index and do affect the selection of target code. They describe essential differences in site, etiology or type of disorder and must appear in the clinical statement for the code to be assigned.

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3 years ago
What cell structure helps the cell stay flexible and maintain homeostasis?
MaRussiya [10]

Answer:

The cell membrane.

Explanation

I hope this helps you.

3 0
3 years ago
A ___ is required to transfer genes from organism to another
sveticcg [70]

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