yes
They are always in pairs, one from each parent.
Yes, chromosomes do come in pairs.
They are long strands of DNA when unraveled are over a meter long.
Humans have 23 pairs of chromosomes. Males have 1 X chro. and 1 Y chro. in a pair. Females just have 2 X's. The first 22 pairs are evenly spaced between male and female, but the 23rd depicts which...