Red hair is a recessive trait in humans. If 2% of the US population has red hair (92), then what percent of people in
the US are heterozygous (2pq) for this trait assuming that the
population is following Hardy-Weinberg equilibrium? Write
your answer as a whole number percentage. Do not include
decimals or the percent symbol (%).

Populations of blue-winged warblers, a type of bird, migrate south in the winter and return to canadian breeding grounds in the spring. as global temperatures have increased due to climate change, spring has started arriving in the warbler's breeding grounds earlier in the year, before the warblers return. warblers now arrive at their breeding grounds too late to select ideal nesting sites and to feed on important early-spring food sources how are populations of blue-winged warblers most likely to be affected by the earlier arrival of spring? o a. populations will go extinct since the warblers will stop migrating to breeding grounds. b. populations will be unaffected since most species can quickly adapt to effects of climate change. c. populations will increase since warmer temperatures are generally beneficial to survival, d. populations will decline since individuals will be less likely to successfully reproduce, reset next

Modern sea star larvae resemble some primitive vertebrate larvae. this similarity may suggest that primitive vertebrates

Which enzyme is responsible for “unzipping" the dna by breaking the hydrogen bonds between the nucleotides?