19 Down syndrome is a genetic disorder caused by the
presence of an extra chromosome in the body cells of
humans. This extra chromosome occurs in a gamete as a
result of
(1) an error in the process of cloning
(2) an error in meiotic cell division
(3) a gene mutation
(4) replication of a single chromosome during mitosis

Acell goes through cellular respiration and produces atp which it then uses to move a molecule across the cell membrane. how does the energy in the original glucose molecule change during this process? (2 points)

For the strategies below, decide whether they are best described as demand-side solutions or supply-side solutions to meeting human needs for fresh water. remember that a demand-side solution reduces demand for fresh water, whereas a supply-side solution increases the supply of fresh water. (a) damming a river to create a reservoir (b) desalinating seawater (c) a nation invading a neighboring country to access their rivers (d) raising water prices for consumers and businesses (e) providing tax breaks for companies that use less water (f) replacing inefficient irrigation with more-efficient drip irrigation to grow crops (g) requiring low-flow showerheads in all new homes

28. how many linkage groups will be formed by homogametic organism with 28 chromosomes?