In the fruit fly, Drosophila melanogaster, a known deletion on the X chromosome removes both a gene involved in the fly's develo
pment and the gene for eye color. The deletion is lethal when homozygous or hemizygous. Flies that are heterozygous for the mutation are viable, but have indentations at the wing margin. Therefore, the deletion is named the Notch mutation. The allele for wild type eyes is dominant over the allele for white eyes. Predict the phenotypic ratio of the offspring from a cross between a white-eyed notched female and a wild type male.
a. 1 white-eyed notched female 1 wild type female 1 notched male 1 white-eyed male
b. 1 wild type female 1 notched female 1 white-eyed male
c. 1 white-eyed female 1 notched female 1 white-eyed male
d. 1 wild type female 1 notched female 1 white-eyed male 1 white-eyed notched male
So sound travels 1 kilometer in roughly 3 seconds and 1 mile in roughly 5 seconds. When you see the flash of a lightning bolt, you can start counting seconds and then divide to see how far away the lightning struck.
