Which autosomal dominant genetic trait associated with a gene on human chromosome 4 leads to a type of dwarfing due to defective cartilage formation?
a. achondroplasia
b. sickle cell anemia
c. Duchenne muscular dystrophy
d. phenylketonuria
Ans: a. achondroplasia
You might also like to view...
The transformation of humans from hunter-gatherer societies to agriculturally based ones occurred approximately
____.
a. 14,000 years ago b. 11,000 years ago c. 7,000 years ago d. 1,500 years ago e. 200 years ago
All of the following are functions of integral membrane proteins EXCEPT ____
a. transport of polar molecules b. reception of chemical signals form other cells c. cell division d. recognition of other cells as being "like" e. cell-cell binding
Many organisms grow in areas where sun and nutrition sources are poor, such as the hydrothermal vents at the bottom of the ocean. By what process do these organisms make their own food?
a. photoautotrophy b. diffusion c. chemoautotrophy d. predation
Photosynthetic organisms convert the energy of ______ into chemical energy.
a) Electrons b) Protons c) Photons d) Hydrogen atoms