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Deffense [45]
3 years ago
11

Which of these is a natural source of pollution?

Biology
1 answer:
ANTONII [103]3 years ago
7 0
The correct answer is "dust storms".

First of all, rain, unless it is acid rain, is not a source of pollution although it is a natural phenomena. Pesticides and fossil fuels both cause pollution but they are a man-made phenomena not natural. Dust storms produce pollution in the air by swifting dust rendering the air almost unhabitable. This is a natural occurence and at the same time, pollutes.
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In Guinea pigs, short hair is dominant and long hair is recessive. A
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Answer:

a. S represents allele for short hair while s represents allele for long hair.

b. Ss (male) × ss (female)

c. 50% Ss, 50% ss

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Explanation:

This question involves a single gene coding for hair length in guinea pigs. The allele for short hair (S) is dominant over the allele for long hair (s).

a. Letter "S" will represent the allele for short hair while letter "s" will represent the allele for long hair.

b. According to this question, a heterozygous male is crossed with a long-haired female. The genotype of the male guinea pig is "Ss" while that of the female is "ss". (see attachment for the punnet square)

c. The possible genotypes of the offsprings in this cross are: Ss and ss, each carrying 50% each as they are produced in a ½ Ss: ½ ss.

d. Since 50% of the offsprings will be both short haired and long haired, If they have six babies, 3 of them will be short-haired while 3 of them will also be long-haired.

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Explanation:

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