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Xelga [282]
3 years ago
11

Which of the following is widely regarded as the most significant, insightful, and powerful type of information that science gen

erates?
A. Hypotheses
B. Laws
C. Theories
D. Observations
Biology
1 answer:
d1i1m1o1n [39]3 years ago
8 0
The answer is D.............
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These had no leaves or roots, instead they had green photosynthetic stems which served as both anchors in the ground and photosynthetic surface.

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What type of country is described by higher birth rates, higher infant mortality rates, and lower average income?
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Which is an example of an insertion mutation that changes all of the amino acids that follow the mutation?
astra-53 [7]

Answer:


2) CAG - TTC - ACG mutates to CAG - TTC - ACC - ACG

Explanation:

Insertions are mutations in which extra base pairs are inserted into a new place in the DNA. The number of base pairs inserted can range from one to thousands!

In option no. 1: We see that there is not addition of a single or more than one base, but the new base sequence is different from the original sequence at three places i.e: TTA - CAC - G

In option no. 2: The insertion of three bases ACC has been made exactly after TTC, the whole sequence and arrangement of bases remain same except this insertion.


In option no. 3: The first base of the sequence T is replaced with A, and all other sequence is same. This type of mutation is called substitution in which one base is replaced by other.


In option no. 4: The last base of the sequence C is deleted, and is not present in new sequence. This type of mutation is called deletion in which a base is removed from the sequence.


Conclusion: Therefore, the best option is 2, in which whole codon is inserted in the DNA base sequence.



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Secondary succession could occur after a _____.?
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Suppose that a few individuals of a lizard species are transported on a log that floats from the mainland, where the lizard is a
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genetic drift

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Genetic drift is a change in the frequency of an allele within a population over time. There are no environmental influences that cause genetic drift to occur.

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