Multiple Choice
Which of the following best completes the statement: The expression of genes can be affected by molecular signals sent from other cells?
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3. Extensions to Mendelian Inheritance
Overview of interacting Genes
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Novel combinations of genes can arise from _______.
A
DNA replication errors only
B
mitotic cell division
C
genetic recombination during meiosis
D
translation of mRNA
Verified step by step guidance1
Understand that novel combinations of genes refer to new arrangements of alleles that differ from those in the parent organisms.
Recall that DNA replication errors can introduce mutations but do not typically create new combinations of existing genes.
Recognize that mitotic cell division produces genetically identical daughter cells, so it does not generate new gene combinations.
Focus on meiosis, a special type of cell division that reduces chromosome number by half and includes processes like crossing over and independent assortment.
Identify genetic recombination during meiosis as the process where homologous chromosomes exchange segments, creating novel gene combinations in gametes.
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