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nalin [4]
3 years ago
12

What is the half-life of the radioactive isotopes?a. A radioactive isotope decreased to one-half its original amount in 18 month

s.
Biology
1 answer:
arlik [135]3 years ago
3 0

One fourth means (one half) of (one half) .

So the 18 months must be two half-lifes.

The half-life of this particular isotope is 9 months.
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Attached earlobes are recessive to free earlobes. If two heterozygous individuals have a child, what is the probability of the c
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Answer:

probability of the child having attached earlobes since it is recessive i.e (yy)

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=0.25 × 100%

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Explanation:

If two heterozygous individuals have a child

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Xy  ×   Xy

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