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3 years ago

How many times does a person blink in a week?

Biology

2 answers:

lidiya [134]3 years ago

7 0

201,600 because we blink about 28,800 times in a day so x 7 days

Hatshy [7]3 years ago

4 0

Answer:

Scientists have shown that the average person blinks 15-20 times per minute. That's up to 1,200 times per hour and a whopping 28,800 times in a day. So that is 201,600 a week.

Explanation:

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Complete the concept map below to describe steams and river systems. Use the following terms in your concept map: braided stream

larisa [96]

Here are the answers.

1. Runoff from the land in a stream’s watershed……….

2. And water from its tributaries.

3. At the stream’s headwaters, the gradient………..

4. The greater the water speed, the larger the stream load………..

5. Which is made up of: a) suspended load, b) dissolved load, c) bed load

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7. Where gradient flattens, a meander may form

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A. Indique la relación entre la ocurrencia de cancer y la edad.

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Amad does not need continued care. however, he does receive care during the day in the form of meals and medications. what type

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3 years ago

A young couple went to see a genetic counselor because each had a sibling affected with cystic fibrosis. (Cystic fibrosis is a r

mel-nik [20]

Answer:

a) The correct answer is 1/2 or 0.5

Cystic fibrosis is a recessive disorder and her sibling has a disease but none of the parents had it. Thus, each of the parents must be the carrier of the disease, that is, both of them must be heterzygous.

So, if we cross Cc x Cc, it results in the genotype ratio of 1 (CC) : 2 (Cc) : 1 (cc)

Thus, 2 out of 4 would be the carrier of the disease.

b) 1/16

The probability of female to the carrier is 1/2

Same is the case with male partner due to the probability that he would be the carrier is 1/2

If both are carrier then, there is only 1/4 chances that the offspring will have the disease (as per cross shown above).

Now, the probability that the offspring will have the disease = product of all the above probabilities. (The probability of occurrence of two independent events is equal to the product of their individual probabilities).

So, $\frac{1}{2}x\frac{1}{2}x\frac{1}{4}$ = $\frac{1}{16}$

c) 1/8

The probability of female to be the carrier is 1/2

The probability male to be the carrier is 1/2

If both are carrier then, there is only 2/4 chances that the offspring will be the carrier of the disease (as per cross shown above).

Now, the probability that the offspring will be the carrier = product of all the above probabilities. (The probability of occurrence of two independent events is equal to the product of their individual probabilities).

$\frac{1}{2}x\frac{1}{2}x\frac{2}{4}$ = $\frac{1}{8}$