Most people are lactose intolerant as adults, but nearly everyone produces sufficient lactase as an infant. however, in some cases, genetic mutations can occur that make an infant lactose intolerant. from an evolutionary perspective -- over thousands of years -- why would lactose intolerance in infants be very rare in the population?

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

This is a scaffolding of protein fibers that us sell keep it shape in a cell division and cell movement

This problem has been solved! see the answeryou are investigating two traits in fruit flies controlled by one gene each. the b gene controls for body color (black or brown), while the r gene controls for body sculpture (rugose or smooth). after crossing rugose black flies with smooth brown flies, you obtain an f1 generation of 100% smooth black flies.what are the dominant alleles? (1 pt)what are the genotypes of the two parent flies to perform a dihybrid test cross? (1 pt)after running a dihybrid test cross, you find 1000 offspring with the following phenotypes: , rugose406black, smooth86brown, rugose94brown, smooth4141000fill in the expected column with the expected number of offspring in each class of phenotypes. (1 pt)what phenotype classes represent the recombinant offspring? (1 pt each)calculate the relative genetic distance between the body color gene and the body sculpting gene (show your work). (1 pt).