Crossing over happens in prophase I when the homologous chromosomes are sy naps ed. The two inner chromoatids exchanges sections with each other. This means that after the exchange the inner two chromatids have new combinations of alleles than their parents had. The two outer chromatids still have the parental combinations.So there are more kinds of chromatids ready to go into the gametes than there were before. This is an increase in variation.
Answer: The primary structure of a protein refers to the sequence of amino acids in the polypeptide chain. ... The primary structure of a protein is determined by the gene corresponding to the protein. A specific sequence of nucleotides in DNA is transcribed into mRNA, which is read by the ribosome in a process called translation.
Explanation:
The following provides the best argument for separating Archaea and Bacteria into their own domains instead of leaving them together in the single kingdom, Monera :
<u>It was discovered that they make their membranes differently and copy their DNA differently.</u>
Explanation:
The reason that Archaea were determined to be a separate kingdom so late was because archaea often completely resemble eubacteria. But you can see that fungi and other eukaryotes are more similar to archaea than the bacteria.
Archaea have cell walls that lack peptidoglycan and have membranes that enclose lipids with hydrocarbons rather than fatty acids
Bacteria: cell membrane contains ester bonds; cell wall made of peptidoglycan; have only one RNA polymerase; react to antibiotics in a different way than archea do
Archaea and bacteria are both prokaryotes, meaning they do not have a nucleus and lack membrane-bound organelles.
Both archaea and bacteria have flagella, thread-like structures that allow organisms to move by propelling them through their environment.
In all organisms, cell membranes are made of molecules known as phospholipids.
The phospholipids of archaea are unusual as they have membranes composed of glycerol-ether lipids, whereas bacteria and eukaryotes have membranes composed mainly of glycerol-ester lipids
Answer:
The correct option is GOLGI APPARATUS.
Explanation:
The Golgi apparatus is the cell organelle that is responsible for transporting, modifying and packaging of synthesized proteins for delivery at specific locations, which may be inside or outside the cell. The number of Golgi apparatus that can be found in different cells differ greatly. Disorders of Golgi apparatus are usually associated with defects in proteins transportation, sorting and packaging.