Answer:
I think it's interferon.
Explanation:
Interferons are substances produced by cells in the body to help fight infections and tumors. So, it would make sense if they don't have interferon, with severe combined immunodeficiency.
Answer:
Parasitism
Explanation:
If two species, regardless the type of species are living in the same niche they would be competing for the same resources. This would lead to one of the species killing the other or possibly going extinct.
One is probably because your friend has a stronger immune system than you and is able t fight the bacteria infection. The other is probably that your friend is also infected but does not show any symptoms of the infection, in what is referred to as latent infection. The bacteria enters a lysogenic cycle in your friend’s body rather than the more virulent lytic cycle (that happens to you).
Cell, Species, and Biosphere is my Answer hope it helps.
Assuming that you are making the two chromosomes as homologous pairs. You would need to make the two chromosomes relative size because they represent the same genes. One chromosome is from the mom and the other from the dad. If you are making chromosomes for one person they can vary in sizes.