The sweet potato is a common crop plant found in most warm areas of the world. The plant rarely flowers and more rarely makes seeds. However, the roots and potato vines spread rapidly, and new plants are easily grown from the roots and vines of old plants. Some scientists would like to grow new types of sweet potatoes that parasites will not attack. Which of these processes is most difficult in developing new types of sweet potatoes?

Agene with the original sequence of atgtt—tact underwent substitution mutation to form atatt—tact after a few generations. tact is a part of a muscle protein encoding region, and atgtt codes for a digestive enzyme. what will be the effect of this mutation? a. the production of muscle protein will be affected. b. the production of digestive enzymes will be affected. c. the production of both the protein and the enzyme will be affected. d. the production of neither the protein nor the enzyme will be affected.

Which of the following are causes of coastal erosion? check all that apply. beach grasses and other plants trap windblown sand. wave action carves away the coastline. groundwater under pressure is forced to earth’s surface. artificial structures stop the natural flow of sand along the coast. underground caves collapse as bedrock is dissolved.

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?