Answer:
because if not metal than other things like glass wood or fabric would break or not be suitable for the key hole.
Explanation:
flip flops are made of plastic.
Answer:
aa
Explanation:
A widow's peak is the dominant genotype so one must not have that trait. If it was presented then the woman would have the genotype.
A widow's peak is dominant so the man would be either AA or Aa. Since it stated that his is heterozygous (Hetero meaning two different), his genotype would be Aa (again since a widow's peak is the dominant, it only needs one dominant genotype)
Answer:
Eukaryotic cells have: nucleus
Prokaryotic cells have: no nucleus
To be a female one needs to be (xx) whereas to be male , (xy) is needed .it is the Y Amazon that is essential for the development of the male reproductive organ and with no Y chromosomes and embroy will develop into a female