Multiple Choice
In fundamental genetics, the phenotype of an organism is best defined as:
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1. Introduction to Genetics
Fundamentals of Genetics
Multiple Choice
In the fundamentals of genetics, the normal function of a gene is to __________.
A
encode a functional product such as an RNA or protein
B
directly synthesize lipids for cell membranes
C
serve as the site of ribosome assembly in the nucleolus
D
replicate DNA only during mitosis
Verified step by step guidance1
Understand the basic role of a gene in genetics: a gene is a segment of DNA that contains the instructions to produce a functional product.
Recall that genes do not directly synthesize lipids or serve as physical structures like ribosome assembly sites; instead, they provide the code for molecules that perform cellular functions.
Recognize that the primary function of a gene is to encode a functional product, which can be either RNA (such as mRNA, tRNA, or rRNA) or a protein.
Note that while DNA replication is essential for cell division, genes themselves do not perform replication; this is carried out by specific enzymes during the cell cycle.
Conclude that the correct understanding is that genes encode functional products such as RNA or proteins, which then carry out various cellular roles.
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