What happens during synapsis in meiosis? gametes fertilize dna replicates nuclei divide tetrads form

tetrads form

Explanation:

In meiosis, during Profase I the chromosome pairs become visible with long thin filaments. As in mitosis, they were already duplicated during the preceding interphase, thus consisting of two chromatids joined by the centromere. However, at this stage, the degree of condensation is such that they look like single structures.

The homologous chromosomes pair very precisely, which starts at various points and then progresses like a zipper that closes, forming what is called tetrads. This pairing (which is the synapse) is critical for meiosis to occur, so this phenomenon cannot occur in haploid cells.

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.