Which of the following has an open circulatory system? W. Lobster* X. Sponge Y. Human Z. Hydra Which is not a cause of sympatric speciation? W. Geographic isolation* X. Polyploidy Y. Behavioral isolation Z. Mechanical isolation Which of the following is an endocrine gland? W. Salivary gland X. Gallbladder Y. Lachrymal gland Z. Pineal gland* Which best explains why the incidence of polydactyly is so much higher in the Amish population than in the rest of the population in the United States? W. Mutation X. Bottleneck effect Y. Founder effect* Z. Disruptive selection Which of the following hormones controls metamorphosis in insects and crustaceans? W. Cortisol X. Adrenaline Y. Thyroxine Z. Ecdysone* The threshold potential of a membrane of a neuron W. Is always 70mV X. Is always 90 mv Y. Can never change Z. Is a measure of the polarization of the membrane*
Which of the following has an open circulatory system? W. Lobster* X. Sponge Y. Human Z. Hydra Which is not a cause of sympatric speciation? W. Geographic isolation* X. Polyploidy Y. Behavioral isolation Z. Mechanical isolation Which of the following is an endocrine gland? W. Salivary gland X. Gallbladder Y. Lachrymal gland Z. Pineal gland* Which best explains why the incidence of polydactyly is so much higher in the Amish population than in the rest of the population in the United States? W. Mutation X. Bottleneck effect Y. Founder effect* Z. Disruptive selection Which of the following hormones controls metamorphosis in insects and crustaceans? W. Cortisol X. Adrenaline Y. Thyroxine Z. Ecdysone* The threshold potential of a membrane of a neuron W. Is always 70mV X. Is always 90 mv Y. Can never change Z. Is a measure of the polarization of the membrane*