Final answer:
Most Caucasian babies are born with b. blue eyes, which can change as melanin production increases. Two brown-eyed parents can have a green-eyed child if both are heterozygous, carrying a gene for green as well as brown eyes.
Step-by-step explanation:
The question "Most Caucasian babies are born with eyes of this color?" involves the Biology of human genetics, specifically the inheritance of eye color. The answer is b) Blue. Newborn Caucasian infants commonly have blue or gray eyes at birth. This color can change over time, as the production of melanin in the iris develops, potentially leading to brown or other eye colors.
When considering how two brown-eyed parents can produce a green-eyed child, one must understand that eye color is the result of complex inheritance patterns, which are non-Mendelian. In this scenario, the correct answer is b. Both parents are heterozygous, carrying the gene for green eyes as well as brown. This means they each have one allele for the dominant brown trait and one for the recessive green trait. When both parents contribute the recessive allele, there is a chance for the child to have green eyes.
Color perception in newborns is limited, and while the ability to distinguish colors improves rapidly after birth, new infants primarily see in shades of red and have to develop the perception of other colors over time.
Eye Color Inheritance
- Complex Inheritance Patterns
- Non-Mendelian Inheritance
- Green Eyed Children from Brown-Eyed Parents