B. Heart, because the heart circulates blood throughout your body.
I want to say individuals more so than entire populations. That being said it's because the entire populations of living things are able to evolve and move forward through slow evolution.
Answer:
the top is the crust and the bottom is the triangle ofc
Explanation:
bc ofc
A researcher is interested in screening for p-elements inserted into a region on chromosome 3. to produce new insertions, she crosses females homozygous for a miniwhite + p-element on the x chromosome with males homozygous for immobilized transposase on chromosome 2. what genotype will the f1 male flies have? (note that a "+" indicates a wild-type chromosome without the transposase locus or the p {miniwhite +} insertion. the x /y chromosomes are listed first, followed by the second