3. Which statement concerning an ecosystem is correct? A) It can exist with or without a constant source of
energy input.
B) It must contain consumers but can exist without
producers.
C) It involves interactions between biotic and
abiotic factors.
D) It can exist on land, but it cannot exist in lakes,
rivers, or oceans.

In sweet pea, gene c is responsible for color production and gene p is responsible for the purple color pigment. both of them are located on two different loci on different chromosomes. the flowers will be purple only when the plant has the genotypes as c_p_. no color will be produced with genotypes: ccpp, ccpp, ccpp, ccpp. thus, gene c controls the expression of gene p. what pattern of inheritance is exhibited here? a. pleiotropy b. epistasis c. multiple alleles