The karyotype indicates a problem with chromosome 18. what is the problem and what is the best explanation for why it occurred?

a) extra chromosome; insertion
b) foreign chromosome; deletion
c) extra chromosome; nondisjunction
d) mutated chromosome; crossing over

Determine if the following statement is true or false. if true, choose true. if false, choose the rewording that is true. according to the law of independent assortment, alleles for each gene are inherited together so that they always stay together. according to the law of independent assortment, offspring express a combination of their parents' traits. according to the law of independent assortment, alleles for a characteristic split during meiosis and combine during fertilization. true according to the law of independent assortment, alleles for each gene are inherited independently so that no two alleles stay together.

Which direction does the energy flow in this energy pyramid ?

What type of plant is good for a bioassay and where can i buy it? i only have a month.