Answer:
phenotype is the physical make up of an organism. it is controlled by alleles found in the cells of an organism. dominant alleles overshadow the recessive alleles. the allele for tallness for example, is dominant to that for shortness. since alleles occur in pairs, this plant which is tall can either be genotype TT or Tt , two dominant alleles or one dominant allele and the recessive allele which overpowers the recessive allele hence making the plant appear tall. genotype is the genetic make up of an organism. this determines how an organism appears to look externally.
hence genotype determines phenotype.
B. Natural selection
Natural selection can be
defined as the basic mechanisms of which goes along with migration, mutation
and genetic drift. Also, it is process in which an organism get adapted to its
environment by means of selectively reproducing changes in its genetic constitution.
Answer:
the structural layers of earth are - the crust, the mantle, the outer core, and the inner core.