The bronchi are where air passes from the trachea.
<span>disadvantages of genetic engineering are health risks, environmental impacts, impacts on agriculture and industry, and ethical issues that may arise based on the engineering</span>
Answer:
recombination and independent segregation of chromosomes during meiosis
Explanation:
Recombination and independent segregation of chromosomes represent the two most important meiotic mechanisms by which sisters from the same parents can inherit different gene variants and therefore look very different from each other:
1- Independent assortment (segregation) of chromosomes: during meiosis, homologous chromosomes are randomly distributed in daughter cells (which will give rise to the gametes), and therefore separate independently of each other. It is for that reason that gametes have unique combinations of chromosomes, which increases genetic variation.
2- Recombination, also known as crossing over, refers to the exchange of chromosome segments between non-sister chromatids during meiosis. This mechanism is well-known to produce new gene variants (alleles) in the daughter cells. In consequence, recombination also increases the genetic variation of the resulting gametes that will produce offspring (in this case, different sisters).
Nondisjunction could occur during - Anaphase ii
<h3>
What is Nondisjunction ?</h3>
Nondisjunction occurs when the chromosomes do not separate. In this case, gametes are produced with an abnormal number of chromosomes. It is an abnormal number of chromosomes in all cells called aneuploidy or in some cells called mosaicism.
Example ; Down's syndrome, Trisomy of autosomes.
Anaphase is the 3rd stage of cell division process specially after the metaphase in mitosis. In this step sister chromatids gets seperated from each other and pulls towards the cell's ending portion.
specially in Anaphase 2 chromatids splits at the centromere and pulled to the spindle fibres.
To know more about the Anaphase please click here :
https://brainly.ph/question/33956?
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The maximum amount of time that the perishable food can be
safely held in danger zones is two hours. More than two hours could cause the
food to be contaminated or spoiled, which is not safe for an individual to cook
or consume for it could cause food poisoning.
