At an autosomal gene locus in humans, the allele for brown eyes is dominant over the allele for blue eyes. at another gene locus, located on the x chromosome, a recessive allele produces colorblindness while the dominant allele produces normal color vision. a heterozygous brown-eyed woman who is a carrier of colorblindness marries a blue-eyed man who is not colorblind. the woman becomes pregnant and an ultrasound test shows that the child is a boy. what is the probability that he will be colorblind? ( enter the probability as a percent. enter the number only without the percent sign. for example, enter 100% as 100 and enter 12.5% as 12.5 )

Sand spinifex grass is adapted to growing on sand dunes. it is a rapidly spreading plant and the creeping runners produce new root systems. which of these best explains the benefits of these features? a. it limits water loss through the leaves. b. it provides support by anchoring the plant. c. it protects the plant from predators. d. it allows the plant to tolerate salt. reset submit

The collared lizard is a species found in the desert southwest. male collared lizards show considerable color variation, ranging from brightly colored to a very dull pattern. your goal is to determine the function, if any, of male color patterns in collared lizards, using the scientific method. your tentative explanation is that male color plays a role in attracting females for mating purposes. you predict that females will preferentially choose brightly colored males over dull-colored ones. to test this prediction, you observed the interactions of female collared lizards with their male counterparts. you selected males that were the same age and size, and that differed only in their coloration pattern. you placed equal numbers of the two types of male lizards, bright and dull, in aquariums, along with one female lizard per aquarium. out of 350 aquariums observed, the female chose to mate with the brightly colored male 277 times, and the dull-colored male 70 times. in 3 instances, the females did not mate with either type. create a bar graph of your data, plotting the type of male (dull or brightly colored) on the x-axis. on the y-axis, plot the frequency with which each type of male was chosen by females. using this graph, answer the following question(s). is it reasonable to conclude (i.e., is it supported by the data) that female collared lizards prefer more brightly colored male lizards over dull-colored males?

The pronunciation aid that determines the stress placed upon a syllable is the