Sentence examples for mutations must have from inspiring English sources

The other mutations must have happened after birth".

And because heart cells don't divide in adults, the mutations must have occurred before birth, says Gollob.

Because other regions of the viral RNA sequence were different for each strain, the identical drug-fighting mutations must have evolved independently, Shafer says.

This indicates that at least some of the mutations must have occurred independently at the same position in various strains.

Conversely, a variety that has not accumulated mutations must have been created recently by sexual reproduction and can thus be considered as a "recent" variety.

T to C mutations must have occurred in evolution but they appear to have been selected against so as to preserve only a single copy of the CCU anticodon tRNA.

Unless mutations were non-neutral, a mutation must have occurred during the first cell division to yield an allele frequency of 0.25.

The researchers reason that this mutation must have arisen in one of the twins while in the womb.

This indicates that as-yet-unknown regulator(s) that can overcome the male sterile phenotype of the el1 mutation must have been introduced into Koshihikari.

Since sh4 is the result of the same mutation in indica and japonica rice, this mutation must have preceded mutation and divergence at the qSH1 locus that distinguishes the ease of shattering between these varietal groups.

Further evidence for recurrent mutations is the prima facie observation of three alleles at locus R37 in line Vol, where at least one post-origin mutation must have taken place (because the diploid progenitor could not have carried more than two alleles).