Answer:
The correct answer will be option-A
Explanation:
Chromosomal abnormalities are caused when the chromosome pair fails to disintegrate through a process called non-disjunction. The non-disjunction of chromosomes usually takes place at the anaphase I or II of meiosis I which involves the X and Y chromosomes.
The abnormality observed with 45 chromosomes or reduction in one sex chromosome or 45, XO is caused when one X copy of a chromosome is completely absent in the cell.
The cause for the loss of one chromosome is the non-disjunction during meiosis I.
Thus, option-A is the correct answer.
Answer:
True
Explanation:
Anaphylaxis is an acute allergic reaction to an antigen (e.g. a bee sting) to which the body has become hypersensitive.
Common symptoms include:
- Skin reactions such as itching and hives
- Flushed and pale Skin
- Lower blood pressure
- Difficulty breathing
- Choking
- Weak and rapid pulse rate
- Vomiting
- Nausea
- Dizziness or fainting
Mark brainliest please
Answer:
producers are organisms that are capable to make their own food
Explanation:
hope it helps ❤️
Answer:
lood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells, and platelets. Blood has many different functions, including: transporting oxygen and nutrients to the lungs and tissues.
Explanation:
Answer:
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Explanation:
