Answer: It's uracil!
Explanation: The four nirogen bases in DNA are adenine, guanine, thymine, and cystosine. In RNA, thymine is simply replaced with uracil.
B. an area of sand dunes
C. an oasis
D. a valley in a desert setting
Answer:
field of genetics.
Explanation:
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c. dorsal fin
b. gill slit
d. zygote
The given statement-Logistic growth curves are density-dependent is True.
Logistic growth curves describe population growth that takes into account density-dependent factors, such as competition for resources and predation.
The logistic growth model assumes that as a population grows, it will eventually reach a point where resources become limited, and the growth rate slows down.
This is known as the carrying capacity of the environment, which is the maximum population size that can be supported by the available resources. Thus, the growth rate of the population becomes dependent on the population size or density. Hence, the statement is True.
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The correct answer is true.
The density dependent factors are those factors, which is affect the size of the population.
The logistic growth curve shows a a lag phase, a log phase and a stationary phase. In the lag phase, the growth of the organism is minimal, here it prepare for the growth, in log phase, the population growth is exponential. As the resources in a particular area is limited and carrying capacity is also limited, after a certain population density, the growth become stationary, which means mortality becomes equal to the birth rate. As the logistic curve is affected by the density of the population, it would be density dependent.
P.S.- if the resources are not limited, the population continuous to grow exponentially, and would represent exponential growth curve.