Luther Burbank bred potatoes that combined a variety of useful traits. One of Burbank's breeding techniques was hybridization. Which cross of potato plants would have been MOST USEFUL for producing a useful strain by hybridization?
O A a disease-resistant plant crossed with a plant that is not disease resistant
O B. a plant that is not disease resistant crossed with a plant that produces a low volume of food
O c. a disease-resistant plant crossed with a plant that produced a low volume of food
O D. a disease-resistant plant crossed with a plant that produced a high volume of food

Which of these statements is false? a. others may notice a problem with a relationship before the people involved. b. the first sign of a problem with a relationship is a feeling of anger. c. damaged relationships can be repaired. d. even good relationships can be damaged.

If animal agriculture was eliminated, how much grain would become available for human consumption?

Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?