X is the dominant allele / curly hair , females have two X chromosomes and males have an X and Y
Answer:
theory
Explanation:
A proposed set of statements or principles used to explain a group of facts or natural phenomena is a theory.
The largest cell in the human body is the ovum, the female sex cell. The largest cell in the world is an ostrich’s egg.
At the end of the winter they are most numerous in fresh water. they will cover surface of aquatic plants or poles and wooden borders of ponds. If you like to study them you can scrape the brown growth with a flat piece of plastic. you can also use a sponge. for the free living (plankton) species fine mesh plankton net is very useful.
