Final answer:
Gender is determined by a combination of factors, including genetics, hormones, and societal influences. External appearance may not always match chromosomal sex due to hormonal imbalances or intersex conditions.
Step-by-step explanation:
Gender is determined by a combination of factors, including genetics, hormones, and societal influences. While the sex of an individual is determined by the presence of sex chromosomes, the external appearance may not always match the chromosomal sex. This can occur due to a variety of reasons, such as hormonal imbalances or intersex conditions.
For example, a person may have XY chromosomes (typically associated with males), but their external appearance may have female characteristics due to differences in hormonal levels or hormone receptors. Similarly, a person with XX chromosomes (typically associated with females) may have male external characteristics due to hormonal imbalances.
Therefore, the answer to the question is A) Yes, it is possible for someone to have an external appearance that does not match the chromosomal sex.