Hemophilia is a recessive sex linked trait. a male hemophiliac and a phenotypically normal female have a girl that is hemophiliac. which of the following statements is correct? a. the daugjter inherited a dominant allele from her mother. b. the mother is a carrier of hemophilia. c. the genotype of the mother is x^h x^h. d. the genotype of the father is x^h y.

Dwarf galaxies are select one: a. relatively rare. b. not very bright c. mostly spiral shaped. d. none of these.

Ricardo notices that when he plays soccer in the rain, his ball does not seem to go as far after a kick. what is the best scientific question that ricardo could ask about this observation? is soccer better played in the rain or sun? how does rain affect the distance a soccer ball can travel? how does rain affect the speed of a soccer ball? is soccer affected by the rain?

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2