Answer:
A fixed allele is an allele that is the only variant that exists for that gene in all the population
Explanation:
Answer:
oxygen and carbon dioxide
Glycolysis, Krebs cycle, electron transport chain
Answer:
They have different ribosomes.
Explanation:
When two different organisms exhibit a similarity in the pattern of embryological development, it is an indication that the two organisms have descended from a common ancestor. Similarity in embryological development is accepted by biologists as further evidence of common ancestry to back up evidence obtained from fossil finds.