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Biology

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Bradly Buckridge

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Cards in this guide (7)
If A bag contains 3 orange 5 black and 2 white marbles Two marbles are drawn but the first marble is not replaced Find P white then black

Bag with 10 marbles: 3 orange, 5 black, 2 white.

Rephrasing the question.

If a marble is drawn from the bag, then returned to the bag, and a second marble

is drawn, what is the probability that the first marble turns out white and the second

marble black ?

The probability for a marble to come out white from the bag is:

P(W) = 2/10 = 1/5

The probability for a marble to come out black from the bag is:

P(B) = 5/10 = 1/2

The probability for a marble to come out white, put back in the bag and then take again a marble for a second time and turns out to be black is:

P(B2|W1) = (1/5)∙(1/2) = 1/10 = 0.10 = 10 %

What happens to sister chromatids in meiosis

They are separated and pulled to the opposite ends, or poles.

What information does a linkage map provide

the distance between genes on the same chromosome

What term defines a gene made up of two diffrent alleles

Heterozygous

When the dominant allele does not completely mask the effect of the recessive allele in the heterozygote it is called polygenic dominance incomplete dominance dominance corecessive codominance

Incomplete dominance.

In most plants stomata on a leaf must be during the calvin benson cycle

In most plants stomata is usually opened on leaves to preserve water. As a result, CO2 is added during the Calvin Benson Cycle.

Based on his experiments Mendel concluded that each trait was controlled by two

invisible "factors" - now called genes.

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