Question

All of the following are effects of crossing over of homologous chromosomes during prophase I of meiosis with the EXCEPTION of
Responses
A increased genetic variety.increased genetic variety.
B increased number of chromosomes in the offspring.increased number of chromosomes in the offspring.
C the appearance of new phenotypes in the offspring.the appearance of new phenotypes in the offspring.
D possible harmful mutations from cross-over errors.

B increased number of chromosomes in the offspring.