The portal vein directs blood from the GI tract to the liver. The liver is the first organ to receive nutrients that are absorbed from the GI tract. It is the ‘gatekeeper’ and is responsible for filtering out possible toxins before they reach delicate tissues such as the brain.
Answer:
Bull = Pp
Cow A = pp
Cow B = pp
Cow C = Pp
Explanation:
In cows polled (P) is dominant over horned (p) trait.
The bull is polled so it can be PP or Pp. Cow B is horned so it must be pp. Resultant offspring from bull X Cow B is also a horned calf (pp). This calf must have received one p from the bull. So the bull's genotype is Pp.
Cow A is also a horned cow so it must be pp. When bull X Cow A, a polled calf is produced. Since the bull's genotype is Pp and Cow A's genotype is pp, this polled calf will be Pp like the bull.
Cow C is polled like the bull so it can be PP or Pp. However on crossing with the bull (Pp) a horned calf is produced (pp). This calf got one p allele from the bull and p allele from the Cow C. So Cow C's genotype must be Pp.
Hence,
Bull = Pp
Cow A = pp
Cow B = pp
Cow C = Pp
<span>Some organisms have the ability to "transform" in order to meet their needs. For example, a chameleon can change it's colors to escape predators, and a snake can contort its body in order to fit where it needs to be to hide out.</span>
The first one and the fourth one
