Question

Body Features are-
A) Phenotype
B) Genotype
C) Sex of an individual
D) Controlled by the atmosphere

Answer 1

Hint: Body features or physical characteristics of the body are the defining traits that are visually apparent and give the first impression of a person. For eg: eyes, hair, nose, etc.

Complete answer:
Let us analyze the options to find the correct answer-
Option A: Phenotype is the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment. It is the physical expression of a genotype and depends on the dominancy and the interaction between the genes. The sum of an organism’s observable characteristics is their phenotype and therefore, this is the correct option.
Option B: Genotype is the genetic constitution or makeup of an individual organism that can be passed down from parents to offspring. It is an organism’s complete set of genes that speaks about its heritable genetic identity. Therefore, this is an incorrect option.
Option C: Sex of an individual is the biological difference between males and females and is decided by X and Y chromosomes in mammals. Therefore, this is an incorrect option.
Option D: Body features are not directly controlled by the atmosphere. The interaction between the genotype and the environment decides the phenotype of an individual. Thus, this is an incorrect option.

Therefore, the correct answer is option ‘A’. Phenotype

Note: An individual's observable traits, such as height, eye color, and blood type are defined as its phenotype. The genetic contribution to the phenotype is called the genotype. The phenotypes are sometimes equally, or sometimes more greatly influenced by environmental effects than genetic effects. There are almost always some environmental influences between the genotype and phenotype of an individual.