An organism possesses one copy of each allele type for a given gene. It is said to be...
homozygous recessive for both alleles
heterozygous for the gene
genotypically inactive

*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 kind of aquatic ecosystem does the photograph most likely show? a. marsh b. swamp c. lake d. river

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?