Mutation load is an important factor in the evolution of mate choice Heisler ; Rice ; Pomiankowski et al. There are estimated to be genes on the X-chromosome Ensembl version X-linked mutations don't cause the same problems in males and females.
Search Encyclopedia. Intronic sequences flanking alternatively spliced exons are conserved between human and mouse. These are the substances our bodies need to form and work well. Males are affected more often than females, because the gene is located on the X chromosome. Intriguingly, the increase in amygdala size was even greater than the relative difference normally found between males and females 36
One common explanation for the twofold cost of sexual reproduction for females is that meiosis reduces the influence of deleterious mutation. Could it be that the cost—benefit balance of sexual reproduction introduces a limit for how high male mutation rates can be? In terms of cognitive development, girls with Turner syndrome have normal verbal intelligence, but they are deficient in terms of visuospatial abilities [such as the ability to complete a jigsaw puzzle 25 ].
A, Tucker P. Neuron35— A, Jakobsen I.
The effect of variation on fitness. Trends Genet. And in humans this is the X or the Y chromosomes. V, Hurst L. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide.
Comparison of the chicken and turkey genomes reveals a higher rate of nucleotide divergence on microchromosomes than macrochromosomes.