In one type of dog, black spots (b) are dominant over brown spots (b) and long tails (l) are dominant over short tails (l). use the dihybrid cross for parents with the genotypes bbll and bbll and determine the likelihood of offspring with the phenotype of brown spots and short tails.
bl bl bl bl
bl bbll bbll bbll bbll
bl bbll bbll bbll bbll
bl bbll bbll bbll bbll
bl bbll bbll bbll bbll
0%
10%
20%
50%

What is the difference between a scientific hypotheses and a scientific theory?

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.