A developmental biologist has transplanted some mesenchyme from underneath the apical ectodermal ridge (AER) of the forelimb bud from one embryo and moved it underneath the AER of the hindlimb bud of another embryo. Which of the following would you expect to from this surgically altered limb bud in the embryo that received mesenchyme? A. An appendage that is proximal leg and distal wing
B. There is a leg where you expect a wing.
C. An appendage that is proximal wing and distal leg
D. There is a normal wing and leg.

Sea levels are rising due to climate change while increasing numbers of people are moving into coastal areas. to accommodate more people, there has been increased construction of beachfront resorts and condominiums. how is this impacting sea turtle numbers and biodiversity and why? a. the increased human population in coastal areas has meant that more food is available to the turtles (e. g., dropped food, waste from restaurants), which has led to an increase in the numbers and diversity of sea turtles. b. there has been very little change in the numbers and biodiversity of sea turtles because the planet is so vast that they can simply relocate to less crowded beaches. c. this has resulted in a decrease in numbers and diversity of sea turtles because it is restricting available nesting sites, and hence reproduction. d. this has resulted in an increase in numbers and diversity of sea turtles because people are around to protect them from natural predators.

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

Ayoung boy has been found and police are trying to locate his family they take a dna sample from him and begin collec dna samples from families who have missing children if police use dna samples only from the fathers, which type of dn technology can they use to identify the boy's parent? y-chromosome analysis omtdna (mitochondrial dna) analysis vntrs (variable tandem repeats) o pcr (polymerase chain reaction) analysis