It involves a physical exchange of segments from homologous chromosomes. Because of crossing over, alleles originally located on the same chromosome can end up on different chromosomes and be inherited independently
Answer:
d. it could be any of these three types of microbes
Explanation:
Cell wall made of peptidoglycan is a characteristic feature of bacteria that are otherwise unicellular prokaryotes.
Fungi have a chitinous cell wall and may be unicellular or multicellular. The example of unicellular fungi is yeast.
Protists are unicellular eukaryotes and have a cell wall made of cellulose.
Ribosomes are the site of protein synthesis and are present in all the organisms. Bacteria have 70S type of ribosomes while the eukaryotic fungi and protists have 80S ribosomes.
Dust in the atmosphere represents suspension. It is collaborating shaped during colliding and collapsing of the interstellar mediums this is influenced by the gravitational attraction of the atoms and particles in the entitles. Hence, there are three types of nebular namely, are classical nebula, diffuse nebula, planetary nebular and supernova remnants.
Could you elaborate more?
The organelles that participate in the cell division and in the
formation of cilia and flagella of some eukaryotic cells are the
centrioles. Some cells have cillia (paramecium, the bronchial ciliated
epithelium, etc.) or flagella (flagellate protists, sperm cells, etc.);
these cell structures are composed of microtubules originated from the
centrioles. Centrioles also make the aster microtubules that are very
important for cell division.
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