Crossing over happens in Meiosis 1 only. In Prophase 1 a cells chromatin (chromatin = chromosomes that have not condensed yet) condense and pair up forming homologous chromosomes (paired = XX (2 chromosomes together)). When this happens segments/ alleles of the chromosomes pairing up swap over. This creates genetic diversity as each chromosome is different, it has parts from its pair. This leaves every chromosome unique and individual.
I hope this helps, sorry some of the vocab is rather technical. By the way I would suggest watching the
'Crash Course: Meiosis' on YouTube, this really helped me when I was learning this topic. :D
Answer:
The two components are often found as part of an enzyme are: Protein: proteins increase the rate of reaction that takes place within the living organism. proteins consist of one or more chains of amino acids that make macromolecules.
Explanation:
Answer:
I think that it is E if it is not I am sorry
Explanation:
1. Bacteria
2. Grass
3. Earthworm
4. Field Mice
5. Red-tailed hawk
Answer: the sun heats the earth through radiation
Explanation: