Tobias has mononucleosis. mononucleosis is a disease that tires and weakens the body. it is caused by a contagious virus that is transferred through direct contact. which would be the best explanation of how tobias contracted mononucleosis?
tobias never exercised and was more susceptible to the virus.
as a male, tobias has a better chance of getting mononucleosis.
tobias inherited the gene from his parents.
tobias drank from a water fountain that was contaminated.

Coat color in cats is determined by genes at several different loci. at one locus on the x chromosome, one allele (x ) encodes black fur and another allele (xo) encodes orange fur. females can be black (x x ), orange (xoxo), or a mixture of orange and black called tortoiseshell (x xo). males are either black (x y) or orange (xoy). bill has a female tortoiseshell cat named patches. one night, patches escapes from bill\'s house, spends the night out, and mates with a stray male. patches later gives birth to the following kittens: one orange male, one black male, two tortoiseshell females, and one orange female. what are the genotypes of patches, the stray male, and the kittens?

Ialready know the answers to these questions and they are on the attachment. but i just need to know why that answer is the correct one. plz asap! this is for a report that i need to email by 10!

The main ingredient of magma is a pahoehoe. b silca c dissolved gases d obsidian