According to the theory of biological evolution,
most present-day species of organisms
(1) developed from similar, smaller prehistoric
organisms
(2) have always existed in the form they have
today
(3) developed from fossils of the other organisms
(4) descended from earlier, different species of
organisms

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases