Which one is the correct answer?? The lined squares in the Punnett square represent_.

They represent the parent's genotypes.

it has one origin of replication, but it proceeds in two directions - d)

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.