deleterious allele造句

• When an environment changes, previously neutral or deleterious alleles can become favourable.
• Inbreeding depression is predominantly caused by the homozygous expression of recessive deleterious alleles.
• Inbreeding is avoided because it ordinarily leads to the expression of recessive deleterious alleles.
• Purging occurs because many deleterious alleles only express all their harmful effect in homozygosis.
• Inbreeding depression is considered to be largely due to the expression of recessive deleterious alleles.
• Beneficial alleles tend to increase in frequency, while deleterious alleles tend to decrease in frequency.
• Inbreeding depression is a phenomenon whereby deleterious alleles become fixed more easily within an inbreeding population.
• Deleterious alleles arise through mutation, however certain recessive ones can become more prevalent due to inbreeding.
• Thus, there is a higher probability of beneficial alleles being lost and deleterious alleles being fixed.
• These distinct seeds increase genetic diversity of the plant population and reduce inbreeding depression and deleterious alleles.
• However, the component of fitness decline expected from inbreeding and purging on deleterious alleles could be predicted using.
• Deleterious alleles segregating in populations of diploid organisms have a remarkable trend to be, at least, partially recessive.
• This means that beneficial alleles are more likely to become fixed, whereas deleterious alleles are more likely to be lost.
• This causes some increase in the selective pressure against ( partially ) recessive deleterious alleles, which is known as purging.
• Purging can reduce the average frequency of deleterious alleles across the genome below the value expected in a non-inbred population.
• Recombination can interrupt the process of genetic hitchhiking, ending it before the hitchhiking neutral or deleterious allele becomes fixed or goes extinct.
• Then inbreeding depression occurs at a rate, due to ( partially ) recessive deleterious alleles that were present at low frequencies at different loci.