An infant develops a color preference for yellow and red between 20 to
28 weeks of age. At 4 weeks, the infant can follow a range of 90 degrees.
Between 6 to 12 weeks of age, the infant develops peripheral vision to 180
degrees. Between 12 to 20 weeks of age, the infant is able to accommodate to
near objects.
Your body used the respiratory system (lungs)
The similarity of 94% in their DNA sequence suggest that they have originated from a common ancestor and are closely related species.
Explanation:
The difference in DNA sequences in different species is due to the accumulation of genetic variation in the course of natural selection and evolution. Less is the difference in DNA sequences of two organisms the more related they are.
Genes determine the characteristics in an organism, and they are DNA sequences determining the protein to be formed. The similarity in DNA sequence of two species establish the evolutionary relationship among them.
Due to the genetic variation in species, the natural selection of the species had caused the evolution of the species adapted well to the environment.
Chickens are capable of flight, however their domestication doesn't require it of them. After hundreds of years of being cultivated by humans, chickens have evolved to be less competent at flying than other birds. Chickens are ground feeders, which means they eat grubs and small plants. Since they do not need to hunt down prey like a hawk, they also do not need the wing strength to fly like one. Chickens are able to fly enough to access trees when they need to escape from predators.
