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forsale [732]
3 years ago
12

What materials are bones first made out of?

Biology
1 answer:
Dmitriy789 [7]3 years ago
3 0
Bones contains alot of calcium. 
They are made of bone marrow in the inside and on the outside is the compact bone.
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Which effect is most likely caused by nondisjunction during meiosis?
Reil [10]
The answer to the question would be an extra chromosome.

Meiosis is a type of cell division which all sexually reproducing diploid eukaryotes have. It is finished in the process of fertilization, resulting in a zygote. The chromosome number is divided by half in this process, resulting in four haploid cells which all differ genetically from the parent cells. After DNA replication, two cell divisions take place, referred to as Meiosis I and Meiosis II. The first cell division generates the diversity of genetic information through the process of crossing over and random positioning of homologous chromosomes. The number of chromosomes is here reduces from diploid (2n) to haploid (n). 

In order to achieve genetic diversity, the homologous chromosomes need to separate in the first meiosis, and then the sister chromatids need to separate in the second meiosis, which brings us to four haploid cells. Nondisjunction is an error in this process that can happen in either the separation of homologous chromosomes, or the separation of sister chromatids. The result of nondisjunction in a chromosome imbalance, so a cell that has been affected by nondisjunction is an aneuploid cell. There are different types of aneuploidy, like monosomy (the loss of one chromosome), trisomy (the gaining of one chromosome) and different syndromes can occur as a result of this erroneous process. 

Out of the answers you provided, gaining an extra chromosome would be the answer, but a single chromosome loss can also be the result of nondisjunction.
7 0
3 years ago
HURRY PLEASEEEE
Anton [14]
I would say that it is important for a nurse to have a resumé as complete as possible and to show all the skills that one can do.
So the nurse should include in the skills section:
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<span>- software nursing license
</span>*Driver´s license (depending on each case, but it is not a must)

The rest of the information can be added to work experience and studies. 
7 0
3 years ago
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Answer:

Human performance is negatively affected when core body temperatures are not between 36.5 °C and 37.5 °C.

Explanation:

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