Sparrows are birds that were introduced in the mid 1800s to north america. it is known that sparrows from the north are larger and darker and sparrows from the south are smaller and weigh less. scientists believe that this is due to differeneces in weather in these two regions. this is an example of a) microevolution b) macroevolution c) migration d) mutation e) mutualism

The diagram shows the results when two parents are crossed. the letters represent alleles for a trait that is controlled by three different genes. which best describes this inheritance pattern? multiple allele because a trait is controlled by three different genes polygenic because the offspring have alleles from both parents multiple allele because the offspring have alleles from both parents polygenic because a trait is controlled by three different genes