1
Q
what are chromosome mutations
A
they affect the whole chromosome or number of chromosomes within a cell.
2
Q
how are they caused
A
by mutagens
3
Q
when do chromosome mutations normally occur
A
during meiosis
4
Q
what are the effects of these mutations
A
typically silent but can lead to developmental difficulties
5
Q
what is deletion
A
a section of a chromosome breaks off and is lost within the cell
6
Q
what is duplication
A
sections get duplicated on a chromosome
7
Q
what is translocation
A
a section of one chromosome breaks off and joins another non-homologous chromosome
8
Q
what is inversion
A
a section of a chromosome breaks off, is reversed then joins back onto the chromosome
6.1.1 cellular control
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