Which area of biology provides evidence that organisms are continuing to evolve in modern times? Choose the correct answer.

EVIDENCE FOR EVOLUTION

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	studies of human impact on endangered animal population numbers
B	investigations leading to new vaccines every year to fight infections from the influenza virus
C	research into the nature of stem cells for the purpose of replacing damaged tissues and organs
D	analysis of fossilized remains of organisms using new techniques that can determine genetic information

Explanation:

Detailed explanation-1: -Evidence for evolution: Molecular biology.

Detailed explanation-2: -Process of vaccine manufacture has the following steps: Inactivation – This involves making of the antigen preparation. Purification – The isolated antigen is purified. Formulation – The purified antigen is combined with adjuvants, stabilizers and preservatives to form the final vaccine preparation.

Detailed explanation-3: -It begins releasing antibodies to fight the germ-think of antibodies as soldiers designed to fight off the specific germ you have. This process can take a few days. The antibodies work to attack, weaken, and destroy the germ. Afterwards, your immune system remembers the germ.

Detailed explanation-4: -One way flu viruses change is called “antigenic drift.” Drift consists of small changes (or mutations) in the genes of influenza viruses that can lead to changes in the surface proteins of the virus, HA (hemagglutinin) and NA (neuraminidase).

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