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ra1l [238]
2 years ago
7

Gene mutations can be positive negative or neutral suppose that the normal gene in model 2 produces a polypeptide that was neces

sary for cellular respiration
Biology
1 answer:
IRINA_888 [86]2 years ago
6 0
Mutations are the source of all new alleles. An allele is a variant form of a gene. Variations in alleles lead to variations in organisms. Positive mutations give an organism a better chance of survival. It means that the mutation may be passed on to the offspring. Negative mutations may lead to an early death.<span> Therefore, changes in alleles from one generation to another form the basis of evolution.</span>
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