Which of the following is NOT a positive impact of protists? a- foundation of aquatic food chains
b- used in production of biofuels
c- produce oxygen
d- bioremediation

In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

2. in dragons, a gene on chromosome 1 codes for wing color and a gene on chromosome 2 codes for body color. draw out the stages of meiosis for these two chromosomes from a dragon that is heterozygous for both traits. define your alleles. what are all the possible allele combinations of the gametes produced?

In which state was more than 100 billion tons of coal mined in 2005?