Question

question 5

which of the following characteristics is a heritable trait that exhibits continuous variation?

height
scarring
widows peak
straight thumb

Explanation:

Identify heritable traits

Heritable traits are passed from parents to offspring through genetic information. Height, widow's peak, and straight thumb are genetically determined, whereas scarring is an acquired environmental characteristic.

Analyze variation types

Continuous variation refers to traits that show a range of values with no distinct categories, typically controlled by multiple genes (polygenic inheritance). Height is a classic example of continuous variation.

Evaluate remaining options

Widow's peak and straight thumb are examples of discontinuous variation, as individuals either have the trait or do not (distinct categories). Therefore, height is the only heritable trait exhibiting continuous variation.

Answer:

• Height (Correct answer)
• Scarring
• Widow's peak
• Straight thumb