In Drosophila, genes ec and s are linked on the same chromosome. In a sample of 100 gametes, 76 cells have no crossovers between ec and s, 17 cells have 1 crossover between ec and s, 6 cells have 2 crossovers between ec and s, 1 cell have 3 crossovers between ec and s, and zero cells have four or more crossovers. What is the map distance between the genes ec and s

Plz ! a frog has a genetic mutation in skin cells that causes part of its skin to turn orange the frog will not pass this genetic mutation onto its offspring because, a. the offspring will inherit skin cells from the other parent. b. mutated skin cells cannot divide and produce daughter skin cells. c. skin cells do not contribute genetic material to sex cells. d. parents do not contribute genetic material to their offspring.

Rachel ate a piece of fruit and happened to drop the seeds in her backyard. after a few weeks, she saw a small plant with flowers growing in the backyard. which group does this plant belong to? a. angiosperms b. gymnosperms c. pteridophytes d. bryophytes e. chytrids

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?