Question

What is the trait?
A. Difference between generations
B. Similarity between generations
C. Differences between individuals
D. Both A and B

Answer 1

Trait includes characters. Traits pass on to the successive generations. Mendel explains that traits in different generations are expressed individually. Traits are of two types: dominant and recessive. Interaction of genes with the environment is determined by genes.

Complete answer:
In biology traits refer to the characters. Genotype of the individual refers to the genetic contribution of the trait. The characters or traits which can be expressed as physical appearance, called as phenotype. Trait of the individual is specific such as hair color, blood type. DNA contains the genes which are transferred from one generation to another. Some traits of the parent and offspring can be similar. Variation occurs between different individuals when the genes or chromosomes cross over. Expression of the traits depends on the amount of genes.
There are mainly two types of traits: Dominant and Recessive traits. Dominant trait suppresses the recessive trait. Mendel explains the ratio of the genotype and phenotype of the expressed traits.
From the above information we have found that similarities and differences between generations refer to the trait.

Hence, the correct answer is option (D).

Note: The examples of traits are white-tailed deer in Pennsylvania all have very similar coat color with the limited variation. Differences between traits also lead to the variation in biodiversity. It is also involved in the process of evolution. Traits include physical characteristics such as length, body shape, color patterns, eyesight, etc.