The stem and the middle of the peatals
I’m not really sure what the question is asking, but male sex chromosomes are ''XY.'' Please ask any other questions in the comment box below.
First Blank Space:Flourens
Second Blank Space:Broca
Answer:
HOPE THIS HELPS
Explanation:
A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses.
4) stimulating the production of antibodies
so in future when you catch the same cold your body will be able to produce antibodies quickly because the memory cell remembers the antibodies that fights off the colds
i hope this helps and sorry if this is wrong
