In a Particular Plant, Leaf Colour Is Controlled by Gene

question 40

Multiple Choice

In a particular plant, leaf colour is controlled by gene locus D. Plants with at least one allele D have dark green leaves, and plants with the homozygous recessive dd genotype have light green leaves. A true-breeding, dark-leafed plant is crossed with a light-leafed one, and the F₁ offspring is allowed to self-pollinate. The predicted outcome of the F₂ is diagrammed in the Punnett square shown in the figure, where 1, 2, 3 and 4 represent the genotypes corresponding to each box within the square.
-
Which of the boxes marked 1-4 correspond to plants with dark leaves?

• A) 1 only
• B) 2 and 3
• C) 4 only
• D) 1, 2 and 3

---

Definitions:

Negotiable Instrument

A negotiable instrument is a written document guaranteeing the payment of a specific amount of money, either on demand or at a set time, with the payee able to transfer the instrument to another party.

Drawee

The party, usually a bank, upon whom a check or draft is drawn and is responsible for paying the specified amount of money to the holder.

Certifies

The act of formally confirming or acknowledging a fact or statement, often officially recognized by a signature or seal.

Draft

A preliminary version of a piece of writing, document, plan, or design that may be subject to further revision.