Answer:
A
Explanation:
A)Chromosomes assort independently, and crossing-over occurs.
I think you're talking about histones. Histones are proteins found in eukayotic cell nuclei. Histones are what DNA wrap around so it fits inside the nucleus and helps with the formation of chromosomes.
Answer:
the answer is, D
Explanation:Switching off lights when not in use protects environmental quality.
Answer:
Increasing the number of trusses increases the strength of the bridge.
Explanation:
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