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Aleks [24]
3 years ago
10

What does the pH scale tell us?

Biology
1 answer:
Vesnalui [34]3 years ago
5 0

Answer:

It tells us the polarity of the water.

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How much more CO2 is in the atmosphere today compared to 150 years ago?
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Carbon dioxide is a greenhouse gas and traps heat in the atmosphere. Without it and other greenhouse gases, Earth would be a frozen world. But humans have burned so much fuel that there is about 30% more carbon dioxide in the air today than there was about 150 years ago, and Earth is becoming a warmer place.

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3 years ago
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A woman with normal BRCA alleles has a child with a man who has one mutated BRCA1 allele. What is the probability that the child
grigory [225]

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50%

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According to the given information, the woman has normal BRCA alleles while the man carries one copy of the mutated BRCA allele (BRCA1). A diploid organism such as human beings can have two BRCA alleles. A child gets one BRCA allele from the mother and the other from the father.

The child of the couple would get one normal allele from the woman. However, with respect to the BRCA allele, the man would form two types of gametes in equal proportion. The 50% of his gametes would have the mutated BRCA1 allele while the rest 50% would carry the normal BRCA allele. Therefore, the man can transmit either normal or mutated BRCA allele to the child. So, there are 50% chances for the child to get the mutated allele.

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Which is NOT a step in the emergence of life proposed in the Oparin hypothesis?
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6. The milk snake and the coral snake both have red, yellow, and black alternating stripes. In the milk snake, black
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