Mutations can cause variations in organisms. How does this happen? Question 6 options:

The DNA is copied and then divided.

The DNA is changed in some way.

The DNA is modified by a scientist in a lab.

The DNA double-helix splits open and replicates.

Describe five factors that influence the value of fuel

Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.

All ova contain sex chromosomes corresponding to: x y xx xy