Why is the respiratory system of a bird more efficient than a human respiratory system? Select all correct answers.

Pizza has traditionally been a staple in the diet of college students. A student studying for his Zoo 101 exam orders and consumes a pepperoni pizza (fats, protein, and carbohydrates all in one easy-to-eat package). As he consumed this delicious pie, which of the following occurred in his oral cavity (mouth)? Select all correct choices.

Canvas math answer input instructions:  all fractions must be in the simplest form enter ax for   (no space; no parentheses; no multiplication operator) enter a number, -a/x for

What is the name for the element represented by the symbol As?

For a particular rabbit breed, black fur (B) is dominant to brown fur (b), long ears (L) are dominant to short ears (l).  The genes for the fur color and ear length are on different chromosomes. You have a P generation with two true- breeding rabbits – one exhibits both dominant traits and the other exhibits both recessive traits. You cross the true-breeding rabbits and get several F1 offspring. You then cross two F1 individuals. What proportion of the F2 offspring will have recombinant phenotypes?

The fin whale (Balaenoptera physalus) is the largest baleen whale found in the Mediterranean Sea. It is the world’s second largest cetacean (a marine mammal of the order Cetacea – a whale, dolphin, or porpoise), after the blue whale (Balaenoptera musculus). One particular female fin whale produced a gamete that was missing chromosome 11. The mistake that produced the _______ was____,  and the error most likely occurred _________. 

The fin whale (Balaenoptera physalus) is the largest baleen whale found in the Mediterranean Sea. It is the world’s second largest cetacean (a marine mammal of the order Cetacea – a whale, dolphin, or porpoise), after the blue whale (Balaenoptera musculus). The karyotype shown here was generated from an adult fin whale.     A fin whale cell undergoing meiosis will have chromosomes and chromatids in each cell at the end of meiosis I. At the end of meiosis II, it will have chromosomes and chromatids in each cell.

Which one of the following factors contributes to the ability of eukaryotic cells to complete DNA replication during the short window of time offered by S phase?

Progressive retinal atrophy (PRA) is a genetic condition found in certain dog breeds; its is particularly prevalent in Entlebucher Mountain Dogs.  PRA  is characterized by the bilateral degeneration of the retina (in the eye) causing progressive vision loss culminating in blindness. The condition  is inherited as an autosomal recessive trait.   Two Entlebucher Mountain Dogs, both carriers, have a pup with PRA.  What is the probability that their next two pups will not have PRA?

von Willebrand’s disease (vWD) is a blood clotting disorder in standard poodles. A defect in the gene that encodes the the von Willebrand factor (a blood clotting protein) is responsible for the vWD phenotype in homozygous (ww) individuals.  W is the dominant allele and w is the recessive allele because the W allele