Answer :
B.
A is wrong because if an organism had half the chromosomes, it'd die.
C is wrong because if it had twice the number (as with a tetraploidy), it'll also die.
D is wrong because crossing over. (Also because maternal and paternal cells form the child)
A is wrong because if an organism had half the chromosomes, it'd die.
C is wrong because if it had twice the number (as with a tetraploidy), it'll also die.
D is wrong because crossing over. (Also because maternal and paternal cells form the child)
b is correct Haploid cells join to form an organism that has a complete set of chromosomes.