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lbvjy [14]
2 years ago
8

Which of these can be classified as a pure substance?

Biology
2 answers:
disa [49]2 years ago
7 0

Answer:

A compound is the answer

Explanation:

solution = liquid and something that dissolves

homogeneous mixture = mixture is literally in the name so no

compound = CORRECT ANSWER

heterogeneous mixture = mixture is literally in the name so no

Tasya [4]2 years ago
7 0

Answer:

compound

Explanation:

i took the test

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2 years ago
Well first one to answer winns
Veronika [31]
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8 0
3 years ago
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In humans, a type of blindness is due to a dominant allele; normal vision is the result of a recessive allele. Migraine headache
yan [13]

Answer:

Yes.

Probability of such child = 1/2 or 50%

Explanation:

According to the question, below are the genotypes and phenotypes possibilities:

aa = normal vision & no headache

Aa = normal vision & no headache

AA = blindness & headache

                                                                      Male                       Female

                                                                        Aa                            aa

Possible genotypes of progeny:            Aa        Aa           aa         aa

So it is clear that out of the 4 probable children, 2 with 'genotype aa' will have normal vision & no headache.

Mathematical expression is as under:

2/4 = 1/2 that means 50% progeny.

5 0
3 years ago
PLEASE HELP ME!
arsen [322]

You got this from edg, am I correct. Well he had evidence by drawing and saw the differences between between normal finches to to the ones of Galapagos island. There were 4 different finches, two had a thick beak and two others had thin beak for small wholes where insects might be hiding. He observed the differences between the beaks.

Explanation:

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1. Where are stem cells located?
hjlf

Answer:

bone marrow

Explanation:

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