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Chapter 22 - Variation and Genetics -2
1.
The gene for eye colour is located on _______ chromosomes in Drosophila
a) Y chromosome
b) X chromosome
c) XY chromosome
d) Autosomes
2.
Chiasmata are formed at many places between _______ of homologous chromosomes:
a) Non sister chromatids
b) Sister chromatids
c) Both sister and non sister chromatids
d) None of the above
3.
All chromosomes other than sex chromosomes are called _______:
a) Autosomes
b) Polysomes
c) Mesosomes
d) Homologous Chromosomes
4.
Plants show a variety of sexual situations. Some species like Ginkgo are _______:
a) Dioecious
b) Monoecious
c) Perenial
d) Annual
5.
If crossing over does not occur, the gametes formed are of _______ type:
a) Non parental
b) Parental
c) Inert
d) None of the above
6.
Variations are raw material for ______:
a) Mutation
b) Adaption
c) Evolution
d) Migration
7.
Crossing over produces genetic _______ among offsprings:
a) Abnormalities
b) Mutations
c) Abberations
d) Variations
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