Q.3 Genes control some of the characteristics of an organism.
(a) Write the words from the box in the correct size order, starting with the smallest
structure.
cell
chromosome
gene
nucleus
~Smallest structure to Largest structure
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Dolumn B
Thyroxine
Insulin
pituitary gland
a) Thyroid gland
37 Adrenal gland
u
Pancuas
XX Chromosomes
. Xy chromosomes
Master gland
Adrenalin
Bay
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