Need help with these questions and understanding the material. Thanks!! What is

Question

Need help with these questions and understanding the material. Thanks!!

What is meant by influenza genetic (antigenic) drift and shift? Understand that the emergence of new influenza viral subtypes that can evade immune system destruction provide an example of evolution at work.

Understand that both Reverse Transcriptase and RNA Dependent RNA Polymerase are error prone and are unable to repair the errors made. In this context, what does error prone mean?

Understand that acquired traits are not genetically inherited.

How does variation in skin pigmentation provide an example of evolution at work?

Understand that different species can share structural homologies and developmental pattern similarities.

How is species defined?

Understand how the fruit fly experiment where two groups of flies were grown on different food sources provided evidence for speciation.

Provide reasons for why the fossil record is incomplete.

How are fossils dated?

What is a vaccine?

Explanation / Answer

- SPECIES DEFINITION:- Species can be defined as a group of living organisms which consists similar individuals capable of interbreeding and producing their offsprings.

- FOSSILS DATED:- As for as the fossils are concerned these are determined through Relative dating and Objective dating. As we know fossils can not be directly dated, because most of them have little organic material left, and Carbon 14 dating is only useful up to around 35000–50000 years. The fossils which are older than that must be dated by the rock layer in which they are found.

- VACCINE:-  As for as the vaccine is comcerned it an biological prepration that provides prepared vaccine which helps an organism to fight aganist infection by injecting vaccine into the organisms body. It is an inactivated form of bacteria that is injected into the body to induce an actual infection. Vaccines play an crusial role in keeping us healthy.

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.