Which of the following facts was unknown to Gregor Mendel? A during reproduction, alleles separate
B organisms have two alleles for each of their genes
C alleles for genes are found on chromosomes
D heterozygous genes have two different alleles

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers