Suppose Jennifer is a horticulturist that specializes in the cultivation of orchids. She houses the orchids in a temperature-controlled and humidity-controlled greenhouse. A salesman approaches Jennifer and attempts to sell her a special fertilizer that promises to increase flower production Jennifer, who dabbles in genetics, insists that the fertilizer will have no effect on flower production. She has calculated the narrow-sense heritability of flower production in her orchids and found it to be 0.98. Jennifer claims that a narrow-sense heritability of 0.98 indicates that 98% of the variance in flower production is determined by genetic differences, so a fertilizer would have little effect on flower production in the orchids The salesman disagrees with Jennifer and continues to assert that the fertilizerll increase flower production. Who is correct and why? a) Jennifer is correct. Environmental conditions did not previously impact flower production so it is unlikely that a fertilizer will alter the effects of the genetic factors
b) Jennifer is correct. High heritability of a trait indicates that only genetic differences within a population will account for a trait.
c) The salesman is correct. Environmental factors will still affect an orchid with a high heritability of flower production
d) The salesman is correct. High heritability of a trait within a population does not exclude new environmental factors from affecting the trait.