. 1.The observable expression of an allele pair is called a
A. recessive gene
B. genotype
C. monohybrid cross
D. phenotype

*will mark brainliest for first correct answer* which of the following is most likely to affect the biodiversity of a park ecosystem? a. less rain than usual for several months b. ongoing pollution from a nearby factory c. park rangers plant a new type of tree d. disease wipes out an entire population

Which of the following is not a defining characteristic of plants?

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure