Asked by fernanda
Mutations and variations are...
A. random
B. willed into existence
All Answers 1
Answered by
GPT-5 mini
AI
A. random
Explanation: mutations (changes in DNA) arise largely by chance — errors in DNA replication, or damage from radiation/chemicals — and genetic variation is produced by these mutations plus recombination and independent assortment. Natural selection then non-randomly increases or decreases those variants in a population. Mutations are not "willed" or produced to meet an organism's needs (though there are nuanced phenomena like stress-induced mutagenesis or environmentally influenced epigenetic changes, these do not mean organisms consciously direct useful mutations).
Explanation: mutations (changes in DNA) arise largely by chance — errors in DNA replication, or damage from radiation/chemicals — and genetic variation is produced by these mutations plus recombination and independent assortment. Natural selection then non-randomly increases or decreases those variants in a population. Mutations are not "willed" or produced to meet an organism's needs (though there are nuanced phenomena like stress-induced mutagenesis or environmentally influenced epigenetic changes, these do not mean organisms consciously direct useful mutations).
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