Answer:
Down syndrome occurs when the nondisjunction occurs with Chromosome 21. Meiosis is a special type of cell division used to produce our sperm and egg cells.
Answer:
you didnt post the diagram
Explanation:

Q. In an ________ solution, red blood cells ________. Group of answer choices:
- Hyposmotic, lose water and shrivel
- Isomotic, have a normal shape ✔️
- Isosmotic, swell and may burst
- Hyperosmotic, have a normal shape
- Isosmotic, lose water and shrivel

In an <u>isosmotic</u> solution, red blood cells <u>have</u><u> </u><u>normal</u><u> </u><u>shape</u><u>.</u>
Option B
<h3><u>Explanation:-</u></h3>
Osmosis : The movement of the <u>solvent</u> or <u>water</u> molecules from a solution of their higher concentration to a solution of lower concentration through a <u>semipermeable membrane.</u>
❍ Depending upon the <u>osmotic concentration,</u> There are three types of solution and their result when cell is keot inside them:
- Hyposmotic (Water enters, Swells up)
- Isosmotic(Equal flow, No change)
- Hyperosmotic(Water comes out, shrinkage)
<u>━━━━━━━━━━━━━━━━━━━━</u>
The cramps occur when muscle cells respire anaerobically. The partial breakdown of glucose produces lactic acid. The accumulation of lactic acid causes muscle cramps.