Too Many to Count 3. How might scientists have
calculated these data?
Type your answer here.
Total Number of Bacteria in Soil and Aquatic Habitats
Habitat
Habitat Size Number of Bacteria (in billions)
Ocean:
203,000,000
101,500,000,000,000
Continental Shelf billion liters
Open Ocean:
72,000,000,000
billion liters
36,000,000,000,000,000
Freshwater Lakes
125,000,000
billion liters
130,000,000,000,000
Tropical
rain forest soil
17 million km?
1,000,000,000,000,000
Tundra and
alpine soil
8 million km?
20,800,000,000,000,000
upper 200m

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition.b) one-fourth of the daughters of an affected man would have this condition.c) one-half of the daughters of an affected father and a carrier mother could have this condition.d) only if a woman is xxx could she have this condition.