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3 years ago

In the following diagram, the voltage is 15 volts and the resistance is 3.0 ohms. Use Ohm's law to determine the curre

Biology

1 answer:

weqwewe [10]3 years ago

3 0

Answer:

Explanation:

V = 15 volts

R = 3 ohms

I = ?

Formula

V = I * R

15 = I * 3

15/3 = I

5 = AMPS

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Vitamins help enzymes function as _____. A.proteins B.coenzymes C. minerals D.fats

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Vitamins help them function as fats.

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3 years ago

Bees see the colors yellow and blue, but not red. Flowers that need to be pollinated by bees are mostly yellow of blue. What typ

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Answer:

Natural Selection

Explanation:

In natural selection process of evolution, traits that are essential for an individual to be fit enough to survive under environmental stress become dominant.

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Answer:

c. 1:2:1

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If flower color were determined by a gene showing incomplete dominance, the possible genotypes and phenotypes are as follows:

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ww - white
Rw - pink

If pink sweet peas are self-pollinated, then a cross between two heterozygous individuals is done (Rw x Rw).

From this cross the expected ratios are:

1/4 RR (red)
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So the null hypothesis is that the observed results exhibit a 1:2:1 ratio.

<h3>Chi square test</h3>

$X^{2} = \sum \frac{(Observed - Expected)^2}{Expected}$

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Total 150

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1/4 x 150 = 37.5 Red
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$X^{2} = \frac{(34- 37.5)^2}{37.5} + \frac{(76- 75)^2}{75} + \frac{(40- 37.5)^2}{37.5}$

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The degrees of freedom (DF) are calculated as number of phenotypes - 1; in this case DF = 3-1 = 2.

If we look at the Chi square table, for 2 DF and a probability of p0.05, the critical value is 5.991

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