What is formed when an atom gains or loses neutrons ??
2 answers:
Answer:
Explanation:
Atoms of the same element all have the same atomic number (number of protons). However, they can have different numbers of <u>neutrons</u>.
If an atom gains or loses a neutron, it becomes a different <em>isotope </em>of the element.
For example, let's look at carbon.
Carbon-12
- 6 protons and 6 neutrons
- The most abundant isotope
Carbon-14
- 6 protons and 8 neutrons
- Used in radioactive dating of previously living things.
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The value of Q is 0.44 if 20 organisms of 100 organisms are green.
Explanation:
Data given:
alleles for the color of eyes of fly:
blue allele = dominant represented by P
green allele = recessive, represented by Q
total number of organism = 100
number of recessive trait organism, = 20
Q =?
The allele frequency of the green eye is calculated as:
=
= 0.2
q =
q = 0.44
0.44 is the frequency of Q allele in the population.
Q is the homozygous recessive alleles in the population and its value is 0.44.