A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm. Within the cytoplasm lie intricate arrangements of fine fibers and hundreds or even thousands of miniscule but distinct structures called organelles.

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2 years ago

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When Charles Darwin considered some of the unique structures found in modern animals, like the feathered wings of birds, he famo

REY [17]

Answer:

Charles Darwin’s study of evolution predicts that genetic evidence would show that all organisms share a common ancestor.

Option: (B)

Explanation:

Through his "theory of evolution", Darwin found that the species exist and new species form based on natural selection.
He studied the animals and birds in Galapagos island for his evolution theory.

The four key points of Darwin's Theory of Evolution:

individuals of any species are not identical;

genes are passed from one 'generation' to another;

more offspring are born than can survive;

only the 'survivors of the competition' for the resources will reproduce.

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3 years ago

6. What is the name of the mutation in which a base is added to the genetic sequence? shift

Oxana [17]

Answer: frameshift mutation

Explanation: A frameshift mutation is a particular type of mutation that involves either insertion or deletion of extra bases of DNA. Now, what's important here is the number three. The number of bases that are either added or subtracted can't be divisible by three.

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2 years ago