Which was charles darwin’s contribution to the study of biology?
a.) he was the first person to recognize that organisms change over time.
b.) he believed that organisms adapted through the inheritance of acquired traits.
c.) he explained how traits are passed from parents to offspring.
d.) he proposed that natural selection is the primary mechanism of evolution.

Isotopes of the same element have differ in their

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

Which level of taxonomy has the fewest organisms?