In fruit flies, the color of eyes is sex linked (on the X chromosome)- R= red; r=white. A cross of the flies in the image will produce
A.100% white eyed flies
B. 100% of the females with red eyes, 100% of the males with whites eyes.
C. 100% red eyed flies
D. 100% of the females with white eyes, 50% of the males with white eyes.

Why do you think the puppy litter was all dark-haired?

Scenario #2 in 2001, a population of 2,500 poison dart frogs lived in the amazon rain forest. due to increased deforestation, the population dwindled to 25 frogs in 2019. new government regulations were enacted in 2022, successfully putting an end to the deforestation of the amazon rain forest. once deforestation was stopped, the poison dart frog population was able to recover. by 2050, the population reached 8,000 frogs, of that population, 20 are homozygous recessive for being spotted (ss genotype). q2- ? q- p- p2- 2pq-

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?