Answer:
C. Crossing over would sometimes, but not always, exchange the positions of A and a, and of B and b, on homologous chromosomes.
Explanation:
Crossing over involves the exchange of chromosomal segments (and of course the respective genes on the chromosome segments) between non-sister chromatids in a tetrad during meiosis.
From the attached image, crossing over would sometimes exchange the positions of A and a, and that of B and b on the chromosome. However, this is not the case 100% of the time.
The correct option is C.
The statement that explains why randomized controlled trials are often "double blind" is as follows: to decrease bias by ensuring both the participants and researchers do not know who is receiving the treatment and who is not (option B).
<h3>What is a double blinded experiment?</h3>
Double-blinded experiments are forms of scientific testing in which some information is withheld from two different parties.
In summary, neither the tester nor the subjects tested know which are the control items and which are the test items.
A double blinded is conducted to reduce or eliminate bias between the participants and researchers.
Therefore, the statement that explains why randomized controlled trials are often "double blind" is as follows: to decrease bias by ensuring both the participants and researchers do not know who is receiving the treatment and who is not.
Learn more about double-blind at: brainly.com/question/5303449
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By imagining where she was when she last walked in the door, Marla retraced her steps to find her keys. This is an example of a __________ dependent memory.
A.
mood
B.
echoic
C.
state of being
D.
context
Answer: D
Hope this helps!
Explanation:
Anabolism requires energy to grow and build. Catabolism uses energy to break down. These metabolic processes work together in all living organisms to do things like produce energy and repair cells.
Catabolic reactions release energy, while anabolic reactions use up energy.
<em>The best way to get started is to quit talking and begin doing</em>
<h2 />
Answer:
c
Explanation:
it is older because it was buried deeper than the fossil in layer d
