Chromosomes are thread-like structures in which DNA is tightly packaged within the nucleus.
Parenchyma cells synthesize and store organic products.
Guard cell o is ordered to opening and closing of stomata.
Answer:
harmful effect and no effect
Explanation:
No effect: most mutated genes destroy themselves before it gets to far
Harmful effect: an example of harmful effects would be down-syndrome (where you have 3 21-chromosomes and you are only supposed to have 2)
