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Ilia_Sergeevich [38]
3 years ago
6

Approximately ______ % of the world's sewage is discharged untreated into the world's rivers and oceans.

Biology
1 answer:
UkoKoshka [18]3 years ago
4 0

Out of the following given choices;

15

7

24

95

The answer is 95%. The biggest contributors of this percentage are developing countries that do not have proper waste disposal  mechanisms such as well structured sewer systems.  It is estimated that 70% of industrial wastes in developing countries are disposed off untreated into waters where they end up in oceans through rain wash.






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Assume that genes A and B are 50 map units apart on the same chromosome. An animal heterozygous at both loci is crossed with one
fomenos

Answer:

Explanation:

The homozygous recessive individual can only produce 1 type of gamete (<em>aabb</em>).

The heterozygous individual can produce 8 types of gametes, of which 2 are parental and the rest are recombinant.

Genetic distance (m.u.) = Frequency of Recombination (%)

If the distance between genes A and B is 50 m.u., 50% of the gametes produced by the heterozygous individual, and therefore the offspring, will have recombinant phenotypes.

Without knowing that the genes are located on the same chromosomes, I'd think they are on different chromosomes, because you would get the same result: 50% recombinant offspring.

Whenever the genes on the same chromosome are separated by at least 50 m.u., or they are in different chromosomes, crossing over between them can happen with no restrictions and they will behave as independent of one another.

3 0
4 years ago
Question 6 (1 point)<br> When a disease is acute, what does this mean?
nydimaria [60]

Answer:

When a disease is acute, it will be a short duration. It may be severe and impair normal functioning. They also come on rapidly, and are accompanied by distinct symptoms that require urgent or short-term care, and get better once they are treated.

hope this helps :)

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3 years ago
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iVinArrow [24]

Answer:

Option C. Cellular transport that does not require cellular energy, is the correct statement.

Explanation:

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4 years ago
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Answer:

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During meiosis i, maternal and paternal chromosomes come together during the process called ________ to form a ________.
raketka [301]

Answer:synapsis; tetrad

Explanation:

4 0
2 years ago
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