Speciation genes are more likely to have discordant gene trees

maternal grandmothers with advanced age reproduction are more likely to have down syndrome grandchildren

down syndrome (ds), trisomy 21, is the most common chromosomal syndrome that affects one in 600-800 live births. the advanced maternal age is the only well known risk factor to cause ds. our study revealed that many young mothers produced ds children than advanced age mothers in india. a total of 150 suspected ds cases were investigated cytogenetically. randomly selected 200 healthy families in...

Faster Evolving Primate Genes Are More Likely to Duplicate

An attractive and long-standing hypothesis regarding the evolution of genes after duplication posits that the duplication event creates new evolutionary possibilities by releasing a copy of the gene from constraint. Apparent support was found in numerous analyses, particularly, the observation of higher rates of evolution in duplicated as compared with singleton genes. Could it, instead, be tha...

Children with 5′-end NF1 gene mutations are more likely to have glioma

OBJECTIVE To ascertain the relationship between the germline NF1 gene mutation and glioma development in patients with neurofibromatosis type 1 (NF1). METHODS The relationship between the type and location of the germline NF1 mutation and the presence of a glioma was analyzed in 37 participants with NF1 from one institution (Washington University School of Medicine [WUSM]) with a clinical dia...

Are generous people more likely to vote?

Policymakers in the Unites States and many other countries encourage charitable giving through various subsidies. In the United States, for instance, charitable contributions can be deducted from taxable income making the price of giving inversely related to the marginal tax rate. However, the net effects of such subsidies can be better understood by exploring the relationship between generosit...

Food Taxes: How Likely Are Likely Effects?