How does the enzyme telomerase meet the challenge of replicating the ends of linear chromosomes?
a) it adds a single cap structure that resists degradation by nucleases.
b) it causes specific double-strand dna breaks that result in blunt ends on both strands.
c) it catalyzes the lengthening of telomeres, compensating for the shortening that could occur during replication without telomerase activity.
d) it adds numerous gc pairs, which resist hydrolysis and maintain chromosome integrity

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards.the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote

What does the hardy-weinberg principle relate to? a. chances of survival of an organism b. frequency of alleles in a population c. natural selection in a species d. causes of evolution among organisms