Answer:
Chromosome 21 in figure D is the result of a process known as non-disjunction
Explanation:
Meiosis is the process of cell division that serves to obtain gametes, cells with exactly half the chromosome load of the species. This process involves the equal distribution of chromosomes in each daughter cell.
Non-disjunction is an alteration in the separation of the sister chromatids during meiosis, resulting in a gamete with non-separated sister chromatids, which when joined to a normal gamete can produce an organism with an extra chromosome.
In the karyotype shown in the photo, the non-disjunction in chromosome 21 produces a trisomy, a type of aneuploidy seen in Down syndrome.
Learn more:
Trisomy brainly.com/question/484286
Answer:
The term mechanical digestion refers to the physical breakdown of large pieces of food into smaller pieces which can be done by digestive enzymes, hydrochloric acid. Mechanical digestion in the stomach results in the formation of bolus.
Explanation:
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1. encating laws or voluentary agreements
2. working to keep enough attractive affordable houses
3.assuring that development is spread out fairly
4. make quality trasportation
A lot of people did. Including me.
Answer:
Electron transport chain is the last step of respiration.
Explanation:
Respiration is a cellular process in which glucose molecule is broken down into carbon dioxide, water and ATP is produced as end product. Respiration consists of following main steps:
1. Glycolysis:
It occurs in the cytoplasm of cell, and each glucose molecule is converted into two pyruvates with help of ATP.
2. Formation of Acetyl coenzyme A:
It is a connecting link reaction between glycolysis and Kreb cycle. In this phase Each pyruvate react with Coenzyme A to become acetyl coenzyme A.
3. Kreb Cycle:
It occurs inside mitochondria. In this cycle each acetyl coenzyme A with fixed with CO to produce citrate which undergo in a cyclic reaction to produce ATP and NADH. .
4. Electron transport chain:
It is the last step of respiration which complete in mitochondrial membrane. In this phase most of the energy is produced along with H₂O as by product.
Conclusion:
It was concluded from the above discussion that the last process that takes place in respiration is electron transport chain.
