The D and F loci are 18 map units apart on Drosophila chromosome 3. dd mutants have pale brown dilute bristles and ff mutants have furry antennae. A pure-breeding furry fly is crossed to a pure-breeding pale brown dilute fly for the Parental (P) generation. Show the genotypes of P, the F1 and the F1 testcross progeny. Indicate the four testcross progeny phenotypes, and the expected numbers for each phenotype if there are a total of 436 F1 testcross progeny flies. Show your calculations

What causes the phospholipids to organize themselves the way they do

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.

Which of the following is a true statement? a. individuals evolve to have adaptations. b. individuals have adaptations that can change over time. c. individuals have traits that may or may not make them successful at reproduction. d. populations cant evolve, only individual organisms.