Errors can occur when the chromosomes segregate into the gametes during meiosis resulting in egg or sperm with too many or too few chromosomes. As a result, fertilised eggs and the ensuing embryos may have trisomy (an extra chromosome of a particular pair) in each cell or monosomy (one chromosome fewer in each cell).
To gather data or information or to observe. HOPE THIS HELPS!! IF SOO LET ME KNOOW
Answer:
CELL THEORY WAS PROPOSED BY SCHIELDEN AND SCHAWWAN
ITS MAIN POSTULATES ARE
- All organisms are composed of one or more cells
- Cells are the smallest living things,the basic unit of organization of all organisms
- Cells arise only by divisons in previously existing cells.
Explanation:
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Active transport methods:
- symport - across one protein, two molecules are transported in the same time and direction
- antiport - across one protein, two molecules are transported in opposite directions, which one enters into protein and one leaves it.
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What? Wym??? Where’s the picture
