What Is Evolution? (OCR A-Level Biology A): Quizzes

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What Is Evolution?
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What does the general theory of evolution describe?

Organisms have changed over time

When did Darwin and Wallace jointly present their ideas on natural selection?

1858

How long did Darwin spend gathering evidence after his HMS Beagle voyage?

Over 20 years

What type of variation provides the raw material for natural selection?

Intraspecific variation

What primarily controls discontinuous variation?

Genes only

On which chromosome is the gene controlling ABO blood groups located?

Chromosome 9

Which genotype produces a Rhesus negative phenotype?

rr

What controls characteristics showing continuous variation?

Both genes and environment

In a normal distribution, where does the mean lie?

Within the modal class

What % of results lie within ±1 standard deviation of the mean?

68%

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