Female chickens (hens) that lay larger eggs are chosen to breed with roosters (male chickens) is it natural selection, artificial selection, or both ?

What is a group of organisms that are closely related and share similar characteristics

How can you tell the difference between rough er from smooth er?

Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides