In Poultry,the Genes for Rose Comb (R)and Pea Comb (P)produce

question 8

Multiple Choice

In poultry,the genes for rose comb (R) and pea comb (P) produce walnut whenever they occur together (R__ P__) ; single-combed individuals have the homozygous condition for both genes (rr pp) .Give the phenotypic results of a cross of Rr Pp x rr Pp  

• A) 9/16 walnut, 3/16 rose, 3-16 pea, 1/16 single
• B) 3/8 walnut, 3/8 pea, 1/8 rose, 1/8 single
• C) 3/4 walnut, 1/4 rose
• D) 1/4 walnut, 1/4 rose, 1/4 pea, 1/4 single.
• E) 1/4 walnut, 1/4 rose, 1/4 pea, 1/4 single..

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Definitions:

Alkyl Substituents

Alkyl substituents are groups of carbon and hydrogen atoms attached to a molecule, derived from alkanes by removing one hydrogen atom.

Axial

A term used in chemistry to describe positions in a molecule that are parallel to the axis of symmetry, often referring to substituents in cyclic compounds.

Energy Conformation

The arrangement of the atoms in a molecule that reflects a particular state of energy, particularly in a context where molecules may assume different shapes or orientations.

Stable Conformation

The most energetically favorable structure or arrangement of atoms in a molecule.