Awnser:
She has two different alleles for eye shape, one from each parent
You always receive 1 allele from each parent, and you're heterozygous, those alleles are different.
Answer:
Specialized cells because they preform a specific function
A flood could limit a population from growing and cause another population to die out.
Carcinogens. They come in many forms (search them up) and can be very harmful.