How many times do you need to keep self-fertilizing the colored plants to get a purebred colored plant? a. Once more.
b. Twice more.
c. Indefinitely, until you get all colored offspring.
d. Indefinitely, until you get all white offspring.

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.