Chicken embryos express both Hoxc6 and Hoxc8 in regions where ribs form, but only Hoxc6 in regions where forelimbs form. The fossilized jawbone of a new species of animal was found, and enough DNA was extracted to discover that it had both Hoxc8 and Hoxc6 genes. Which of the following is true of this new species? Group of answer choices D. Can’t tell because chicken genes tell us nothing about other species. Can’t tell without knowing the gene expression pattern. It definitely does not have forelimbs. It definitely has forelimbs.

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

Awire-hair terrier and a smooth-hair terrier are mated. the offspring produced are 6 wire-hair puppies and 2 smooth-hair puppies. a. what pattern of inheritance best describes this situation? b. what is the genotype(s) of the wire-haired puppies? of the smooth-haired puppies? c. what would be the expected genotype and phenotype ratios of a mating between 2 wire-haired terriers that are heterozygous?

Which of the following was a characteristic of a dromaeosaur? modified front claw grasping with their forelimbs both a and b none of the above