Answer:
Option-1 and 3
Explanation:
Cadherin is the protein complex present in the cell which is responsible for the sticking together of cell in tissue-like in the skin. The cadherin junctions allow the communication between the cells and the loss of the cadherin could cause cancer.
The cadherin junction is involved in the signalling pathway in the cells like in the Rho GTPase signalling, Ras signalling and many others which shows that they are responsible for the biological processes in an organism.
Thus, Option-1 and 3 are correct.
Answer:
The correct answer is c. the common ancestor of coyotes and domestic dogs is more recent than the common ancestor of foxes and domestic dogs
Explanation:
The Canidae family includes foxes, wolves, coyotes, jackals, foxes, and domestic dogs. Both dogs and coyotes are evolved from ancient wolves and all three can interbreed to produce hybrids.
Dogs are evolved from gray wolves and then domesticated by humans. Humans did the selective breeding of dogs which resulted in artificial evolution of dogs.
Coyotes are evolved from eucyon which was a primitive wolf. Most scientists believe that<em> C. lepophagus</em> is the ancestor of wolves, coyotes, and dogs. Red fox can not interbreed with dogs, coyotes, and wolves that shows that it does not share a more recent ancestor with these three.
Therefore, the correct answer is c.
Answer:
option A
Explanation:
correct answer is option A
the true statement. is Natural selection works on variation already present in the population
the process of Adaptation of organism according to the environment and other natural reasons which tends to survive and produce offspring is called as Natural selection.
Natural selection theory of its action was given Charles Darwin.
hence, the correct option comes out to be option A