Answer:
D
Explanation:
because the nucleus contains protons and neutrons.
The nucleus of an atom contains protons and neutrons
Mass number=No of protons+No of neutrons
Atomic no=No of protons
the enzyme and substrate fit together like a lock and key.
Karyotyping is <u>a test to examine chromosomes in a sample of cells</u>. This test can help identify genetic problems as the cause of a disorder or disease.
Petunia = perennial
Fescue grass = perennial
carrots = biennial
sweet corn = annual
tomato = annual
blueberry = perennial
cabbage = biennial
zinnia = annual
sugar maple = ??
blue spruce = annual
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