I don't believe that would be fair.
Truly, people should be chosen for a job according to their qualifications, interest in the job, willingness to work, loyalty and drive.
Sometimes it's hard to know when someone is younger and less experienced in a job, but you might want to give them a go at it, if they seem ready to learn.
The answer to your question is 2/3 'No'
The age thing is a little bit tricky, but most of the time people don't go looking for jobs until they're 16+ (depending on the job qualifications) so that shouldn't be a problem.
Having prejudice against someone based on their gender is called sexism. It involves believing that one gender is superior to another and discriminating against individuals based on their gender. This kind of bias can manifest in various forms, such as unequal treatment or limiting opportunities for individuals because of their gender.
Monogamy.
Transgender refers to someone whose gender and/or sex is different to that which they were assigned at birth. When born a doctor assigns you a sex based purely on external genitalia, your parents and community then raise you as the gender they believe should match with your sex, but sometimes as a person grows up they turn out to be a different sex or gender to that they were assigned.
Sexism is discrimination based on gender.
The amount of pay you receive, in most cases, is based on skill, education, and gender. If it should or should not be that way is your opinion.
Your choice of engineering type should not be based on gender, but on a passion for what you want to do. Passion will be your key to success, not gender.
When something is said to be gender based, it means that it is usually more masculine or feminine in nature. Examples of gender based clothing are dresses or high heels.
This should be based on interest, not gender. It all depends on if the person likes math/science or not.
If you are physically attracted to someone based on their personality, and you find that their gender doesn't matter, then you are either bisexual or pansexual, depending on how you view gender identity.
It is the dividing of potential markets based on gender (male or female).
No. Most organizations these days don't have any gender bias while recruiting for the role of project managers. It is unethical and even illegal to deprive someone a job based on their gender. So, I don't think any company would do it.
Norm-based assessment compares an individual's performance to that of a larger group to determine where they stand in relation to others. Competency-based assessment evaluates an individual's knowledge, skills, and abilities based on specific criteria or set standards to determine their level of proficiency in a particular area.