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iren [92.7K]
3 years ago
14

Which of the following was an early realization that gave rise to Darwin's theory of natural selection?

Biology
2 answers:
Svetradugi [14.3K]3 years ago
4 0

Answer:

The answer is D.

Explanation:

I took the test and got it right! Hope this helped! Have a good day/night! :)

neonofarm [45]3 years ago
3 0
D. Darwin's theory of natural selection shows that organisms evolve based on which one's survive the best and thrive. 
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Select all that apply.
ArbitrLikvidat [17]
Pollen....because cones are absent in angiosperms.....flowers are absent in gymno....and seeds are also absent in gymno sperm........so and is pollen !
6 0
3 years ago
Read 2 more answers
A different DNA ladder from NEB (Cat #N3200L) comes as 500 uL of a 1000 ug/mL solution and is not pre-mixed with the 6 X DNA loa
JulijaS [17]

Answer:

4 ul Loading Buffer + 19.70 ul dH2O + 0.30 ul DNA Ladder

Load 12 ul on the gel.

Explanation:

DNA Ladder concentration = 1000 ug/ml

1000 ug DNA in 1 ml DNA Ladder solution →    150 ng DNA = 0.15 ug DNA in..... 0.00015 ml = 0.15 ul DNA Ladder solution

6x DNA Loading Buffer → it has to be diluted by an equal volume 6 times (1 ul LB + 1 ul distilled H2O)

An appropriate volume to load on an average agarose gel is 12 ul, so:

2 ul Loading Buffer + 9.85 ul dH2O + 0.15 ul DNA Ladder = 12 ul

But since 0.15 ul is a very small volume and mistakes could be made while measuring it, let's make double:

4 ul Loading Buffer + 19.70 ul dH2O + 0.30 ul DNA Ladder = 24 ul

And load half of that solution (12 ul) on the gel.

5 0
3 years ago
Why do plants of the fields become yellowish?​
aliina [53]

Answer:

Poor drainage or improper watering

Explanation:

Water issues — either too much or too little — are the leading reason behind yellow leaves. In overly wet soil, roots can't breathe. They suffocate, shut down and stop delivering the water and nutrients plants need. Underwatering, or drought, has a similar effect.

5 0
2 years ago
Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. I
Wewaii [24]

Answer:

D) The lac operon will function normally.

Explanation:

  • The promoter area can be described as the area that causes the transcription to initiate for a particular gene. Promoters may be near the genes from which they initiate transcription or they may display multiple scenes upstream.
  • The lock operon works normally because the promoter area can still enable transcription on many base pairs. Detects repression promoter and works normally.
  • so correct option is D) The lac operon will function normally.

4 0
3 years ago
What is a geological process
babunello [35]
Geological process is the change in the soil as a result of dust and loose rocks are removed by any natural means.
4 0
3 years ago
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