1. Of the following traits, which one is acquired (i.e., not inherited)? (1 point)
eye shape
fingernail length
number and presence of dimples
The acquired trait out of the ones mentioned is the fingernail length.
Of the listed traits, the number and presence of dimples is acquired rather than inherited. Dimples are formed due to variations in the structure of the facial muscles and skin, and they may disappear or become more prominent over time.
To determine which trait among eye shape, fingernail length, and number and presence of dimples is acquired (not inherited), you need to understand the difference between acquired traits and inherited traits.
Acquired traits are characteristics that are developed or acquired during an individual's lifetime in response to environmental factors or lifestyle choices. They are usually not passed down to offspring. On the other hand, inherited traits are characteristics that are passed from parents to offspring through genes.
In the given options, eye shape is primarily determined by genetics and is an inherited trait. Fingernail length can vary due to personal choices, grooming habits, and potentially environmental factors, but it is not entirely an acquired trait since the potential for nail growth is determined by genetics. Therefore, fingernail length is a combination of acquired and inherited factors.
As for the number and presence of dimples, they are primarily determined by genetics and are an inherited trait. Dimple formation is caused by specific facial muscle anomalies that are genetically determined.
So, based on the information provided, among eye shape, fingernail length, and number and presence of dimples, fingernail length would be the trait that is mostly acquired rather than inherited.