Multiple Choice
Which of the following best explains why effective use of selection and genetics is crucial to any successful breeding program?
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1. Introduction to Genetics
Fundamentals of Genetics
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Genes are sections of DNA that code for a particular trait. Genes are:
A
proteins that regulate cell division
B
entire chromosomes
C
random arrangements of amino acids
D
specific sequences of nucleotides on a chromosome
Verified step by step guidance1
Understand the definition of a gene: A gene is a segment of DNA that contains the instructions to make a specific protein or RNA molecule, which ultimately influences a particular trait.
Recall the structure of DNA: DNA is composed of nucleotides, which are the building blocks arranged in a specific sequence along the chromosome.
Recognize that genes are not proteins themselves, but rather sequences of nucleotides that code for proteins or functional RNA.
Differentiate genes from chromosomes: A chromosome is a long DNA molecule containing many genes, so genes are parts of chromosomes, not entire chromosomes.
Conclude that the correct description of genes is that they are specific sequences of nucleotides on a chromosome.
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