........ on through
3 Cells have chromosomes
from both parents.
4 A gene is made up of DNA.
5 Genes sometimes
do not work correctly.
6 Genetic engineering may stop
heart disease.
7 Genetically-modified food
is better than normal food.
8 The writer of the article is in
favour of 'designer babies'.

alexkraskina    3   06.09.2020 01:29    9