Answer:
b
Explanation:
their cell walls contain chitin unlike plant cell walls which contain cell walls
The correct answer for the question that is being presented above is this one: "B. extra chromosome 21." Karyotypes can be studied to determine an organism’s chromosomal makeup and to detect genetic defects. Down syndrome is a genetic disorder that is also called trisomy 21. Trisomy 21 look like in a karyotype with <span>extra chromosome 21</span>
Answer:
I think c if not im sorry
Explanation:
Because astrologers don't use tools , don't observe the planet.
