Rédiger un texte argumenté montrant que les chromosomes d'un individu sont impliqués dans ses caractères.

the answer to your question is:

c. complementary base-pairing

but there is no

i guess you forgot putting it.

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.