Pat wants to observe mitotic cell division in an onion plant. Which part of the plant body is most suitable for this activity and why? A. young onion root tips because the root tip contains apical meristematic tissues
B. onion leaves because the cells are brightly colored and contain collenchyma
C. ovaries from onion flowers because they produce gametes

Three alkali metals in group 1 are calcium, strontium, bariumboron, aluminum, galliumsodium, potassium, rubidiumfluorine, iodine, chlorine

The answer would be c, white eyes are homozygous recessive. in the early 1900s, morgan conducted several experiments with vinegar  flies (drosophila). one  sample revealed an anomaly: a  white-eyed, single male fly. he attempted to breed this fly with the typical red-eyed females. the offspring were all red-eyed. using flies from this new generation (brother-sister pairs)  produced some red-eyed and a few white-eyed flies. the white-eyed were all male. in later experiments, he was able to produce white-eyed females. this proved that white eyes are not lethal to either sex (ruling out a and b). since the percentage of white eyes to red eyes is so low, white eyes are not a dominant trait. it would be a recessive trait. 

The category is the thing that is most simmilar throughout a period