In the experiment on limb length in tetrapods that was conducted by Davis and Colleagues, a mouse with which genotype would lack defects in limb formation?
A. AaBb
B. AaBB
C. AABb
D. AAbb
Answer: D
You might also like to view...
The connection between stem cells and cancer is that
A) all stem cells are also cancer cells. B) cells may become cancerous by expressing "stemness" genes. C) stem cells rescue cells that have become cancerous. D) both stem cells and cancer cells have inactivated telomerase.
The accompanying illustration shows one possible outcome of the random alignment of homologous chromosomes at
metaphase I. How many OTHER possible arrangements exist?
a. none b. one c. two d. seven e. eight
On the basis of their morphologies, how might Linnaeus have classified the Hawaiian silverswords? Linnaeus would have _____
A) placed them all in the same species. B) classified them the same way that modern botanists do. C) placed more of them in different genera than modern botanists do. D) used evolutionary relatedness as the primary criterion for their classification.
Which statement describes suspension feeders?
a. They may inject anticoagulants into a host to inhibit blood from clotting. b. They may have long tongues to effectively extract nectar from plants. c. They may have comblike plates called baleen. d. They may have piercing mouth parts to obtain blood from a host.