Which of the following is an example of horizontal gene transfer?
a. The endosymbiotic origin of mitochondria in eukaryotic cells from once free-living bacteria
b. Formation of a hybrid zone among species of oaks
c. Mating between humans and Neanderthals
d. Mating among different breeds of dog
e. Inheritance by a child of red hair from his father
Answer: a. The endosymbiotic origin of mitochondria in eukaryotic cells from once free-living bacteria
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Which of the following hormones increases blood pressure by directly stimulating the distal convoluted tubule and collecting ducts to take up more water and salts?
A. aldosterone B. angiotensin II C. antiotensin I D. renin E. antidiuretic hormone
Light energy from the sun is captured by photosynthesis as ____
a. heat energy in chemical bonds b. energy in chemical bonds c. chemical energy lost to the environment d. kinetic energy in chemical bonds e. conserved energy
What are the undifferentiated cells that can be used in therapeutic cloning?
A) plasmid cells B) stem cells C) somatic cells D) transgenic cells
In zygomycetes such as Rhizopus, the zygospore is haploid
____________________ Indicate whether the statement is true or false.