Abrown dog is crossed with two different black dogs. the first cross produced only black dogs and the second cross produces equal numbers of black and brown dogs. what is the genotype of the brown dog? the first black dog? the second black dog?

List charasteristics of athenosphere

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits

Number and variety of living organism; includes genetic, species, and ecological types