Some steps in cell division are shown below:

1. chromosomes condense and pair up
2. segments of dna of sister chromatids twist and cross
3. exchange of dna occurs between chromosomes
4. four daughter cells are created that are haploid

which of the following steps is least likely to occur during meiosis 1?

step 1
step 2
step 3
step 4

Are produced in the light reactions and used in the calvin cycle. a)nadh and atp b)electrons and sugar c)nadt+ and adp d)sugar molecules

Residential construction is expanding in florida, the expansion has caused fragmentation of habitats, one of the results of the increased construction is a decrease in the number of large predators such as the coyote, black bear and pool panther, which will be the most immediate local result of this fragmentation? 1)large predators will become extinct 2)decrease in middle sized predators 3)increase in population of top carnivores 4)increase in population of prey species

Gram-negative bacteria have a cell wall that is! and does not accept the stain, making itappear