The Trait of Medium-Sized Leaves in Iris Is Determined by the Genetic

question 63

Essay

The trait of medium-sized leaves in iris is determined by the genetic condition PP'.Plants with large leaves are PP,whereas plants with small leaves are P'P'.A cross is made between two plants each with medium-sized leaves.If they produce 80 seedlings,what would be the expected phenotypes,and in what numbers would they be expected? What is the term for this allelic relationship?

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Definitions:

Isotopes

Isotopes are variants of a particular chemical element which differ in neutron number, and consequently in nuclear mass, yet retain their identity as that element.

Neutrons

Subatomic particles found in the nucleus of an atom, with no electric charge and a mass slightly larger than that of protons.

Protons

Positively charged subatomic particles found within the nucleus of an atom, defining the element's atomic number.

Electrons

Negatively charged particles present in all atoms, responsible for conducting electricity in solid materials.