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UNO [17]
3 years ago
15

A cross-sectional view of a log shows a concentric pattern. Which part of the stem gives rise to this pattern?

Biology
1 answer:
Ivenika [448]3 years ago
5 0

A cross-sectional view of a log shows a concentric pattern. Which part of the stem gives rise to this pattern?

B. Xylem

as it contribute for most of a tree's growth in diameter.

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13. The allele that results in the absence of a tail is autosomal recessive. From which parent do
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Answer:

a) both parents

Explanation:

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5 0
3 years ago
A plant is moved from direct sunlight and placed into complete darkness.
aivan3 [116]

this would cause limited growth of the plant

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hope that helped

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Which of the following places the steps in the PCR procedure in the correct order?
Marta_Voda [28]

Answer:

Polymerase chain reaction (PCR) test is used to duplicate traces of DNA from any living form, for identification purposes.  The correct sequence is 1, 3, 2; based on the options given.

Explanation:

The steps to be followed for the PCR procedure are:

<em>Denaturation</em>

Option 1.  Involves incubation at 94°C to denature DNA strands into single strands by breaking of weak hydrogen links

<em>Annealing</em>

Option 3.  Temperature is lowered to 60°C to allow primers joining their similar DNA sequences.

<em>Elongation</em>

Option 2.  Incubate at 72°C to promote the extension of the DNA strands, actually extending them.

5 0
2 years ago
HELP PLEASEEEEE
soldier1979 [14.2K]
The correct answer here is certainly B. They allow scientists to perform new investigations and test new ideas they may not have been able to do in the past because scientists have been able to do the other 3 options without modern technology.
5 0
3 years ago
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What is the function of the liver?*
vampirchik [111]

Answer:

The answer is aiding in chemical digestion of fats

Hope this helps you

7 0
3 years ago
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