An organism’s characteristics, or traits, are due to genes. Different versions of genes create different traits. What are these different versions of genes called?

Select one:
a. DNA
b. alleles
c. gametes
d. chromosomes

Which of the following occurs after a natural or unnatural disturbance in an ecosystem

New york city has 2,181 inhabitants per square mile. the state of alaska has 1.03 inhabitants per square mile. ecologists would say alaska has a low exponential growth population density birth rate carrying capacity

Which organelles are labeled d, and what is one feature that distinguishes them from the other labeled organelles chloroplasts the only organelles that produce sugars from sunlight mosomes, only found in animal and bacterial cells centricles only found in animal cells mitochondra, the only energo-generating structures found in cells