20. (06.04 MC) Some steps in cell division are shown below: 1. Haploid chromosomes condense 2. Number of chromosomes are reduced to half 3. Chromosomes move to the equatorial plane between the poles 4. Centromeres separate and the sister chromatids are pulled apart to opposite poles by the spindle Which of the following steps is most likely to occur during meiosis 2 only?
Step 1
Step 2
Step 3
Step 4
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Charles darwin published his theory of evolution in 1859. in what way foes modern evolutionary theory differ from the theory as proposed by darwin? a) darwin inferred that individuals can evolve, but modern generic science has shown that this is not true. b)darwin inferred that individuals do not evolve, but modern genetic science has shown that this is not true. c)modern science has disproved most of darwin's original theory of evolution, because darwin knew nothing about generations and their role in heredity. d)generic studies have shown that gene expression and other factors operate along with natural selection, but most of darwin's theory has been supported by modern science.

If the birth rate of a population of dolphins is 2.0, the death rate is 0.5, and the population size is 100, what is this dolphin's population growth?

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth