A breeder performs a test cross to determine the genotype of a black cat. he crosses the black cat (BB or Bb) with a white cat (bb). if 50 percent of the offspring are black, what is the genotype of the black cat

In your opinion, which branch of science provides the most proof that the earth is approximately 4.6 billion years old? Justify your response in two or more complete sentences.

What's the difference between haploids and diploids

Which will diffuse easily in the cell membrane: Molecules that are lipid soluble or molecules that are ionic (charged) ?

Assuming this is a healthy ecosystem, which organisms in this ecosystem would you expect to have the highest population? Which should have the lowest? Hint: Think about the trophic levels and transfer of energy in this ecosystem.

Which of the following statements about prey choice is not correct? a. Predators may concentrate their attacks on old prey because these have lower stamina. b. Predators may concentrate their attacks on young prey because these have lower stamina. c.

Which of the following would be most likely to reproduce by asexual reproduction?

In the data table, the comment column is considered A) qualitative data. B) quantitative data. C) experimental data. D) anecdotal evidence.

What can you learn from observing and comparing the physical traits of different birds?

In what way are lobsters similar to spiders?

Which amino acid is specified by the mrna code gcc? a. gly b. lys c. ala d. pro?