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arlik [135]
3 years ago
13

Meiosis reduces chromosome number and rearranges genetic information. Explain how the reduction and rearrangement are accomplish

ed in meiosis. Several human disorders occur as a result of defects in the meiotic process. Identify one such chromosomal abnormality; what effects does it have on the phenotype of people with the disorder
Biology
1 answer:
Alisiya [41]3 years ago
6 0

Answer:

Explanation:

Meiosis is a form of cell division that occurs in the sex cells of organisms. It ensures the reduction of a diploid cell to an haploid cell to allow for the formation of a diploid zygote after fertilization (contribution of both parents haploid sex cells to give a diploid zygote). Thus, this process is very essential and important.

The reduction is accomplished by 2 divisions after the duplication of chromosomes

- first division: separation of homologous pairs of chromosomes (this reduces the total in half)

- second division: separation of sister chromatids of a chromosome.

The rearrangement in meiosis occurs by crossing over/genetic recombination.

This is the exchange of genetic material between homologous pairs of chromosome bringing about a rearrangement and genetic variation

An example of a chromosomal abnormality that arises as a result of defects in this process is the Down Syndrome which is caused by a nondisjunction of the chromosomes 21 pair in a sex cell.

This condition produces offsprings that have some characteristic facial features, short stature etc

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MrRissso [65]

In simple terms, Gene expression can be stated as the process by which the heredity details in a gene sequence a be made into a functional gene.

<u>Explanation:</u>

  • The odd one for this question is probably would be "it occurs because of cellular signals within your body".
  • It explains how a cell functions. In Gene expression, the gene encodes the protein and the message from DNA to RNA gives the cell functions.
  • It is the specific combination of genes that are turned on or off. It can be stated as the process of turning off and turning on, it acts as a switch to on and off it is known as the gene expression or gene regulation.
  • It creates different DNA within each of your cell types. The unique design of gene expression results in unique and different combinations of proteins and makes each cell types.

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3 years ago
This is the cultivation of animals, plants, fungi, and other life forms for food, fiber, biofuel, drugs and other products used
blondinia [14]

Agriculture

Explanation:

Agriculture can be defined as the cultivation of animals, plants, fungi, and other life forms for food, fiber, biofuel, drugs and other products used to sustain and enhance human life.

  • The etymology of the word can be traced to Latin; Ager-field, cultura-growing.
  • Agriculture provides food that is used to sustain life on earth.
  • It involves solely the cultivation of plants and organisms for nourishment.
  • Some industries thrives on agricultural products and are referred to as Agro-allied industries.
  • It is an art and science of cultivating livestock and plants for use.

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3 years ago
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Help answer 13,14,15
zaharov [31]

Answer:

13. Net Force = 0

14. The forces are balanced

15. Constant motion or Equilibrium will occur

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The initials for the title granted after successful completion of the American Society for Clinical Pathology phlebotomy examina
marin [14]

The initials for the title granted after successful completion of the American Society for Clinical Pathology phlebotomy examination are (PBT) phlebotomy technicians.

<h3>Who are phlebotomy technicians (PBT)?</h3>
  • Patients' blood is drawn by phlebotomy technicians, who then prepare the samples for analysis. The majority of them work in hospitals and clinics, although some also take blood donations. As crucial members of the healthcare team, phlebotomy technicians frequently have to reassure patients by explaining the blood-drawing process.
  • Phlebotomy technicians must be knowledgeable about the various types of blood tests and should be aware of how drugs and dietary choices affect blood samples given the ever changing nature of medical technology.
  • Blood samples need to be drawn and prepared for testing by phlebotomy technicians.
  • Typical obligations and tasks include:
  1. Taking measurements of breathing, pulse, and blood pressure
  2. collecting blood
  3. applying bandages following blood extraction
  4. sending samples of your blood, urine, or feces to the lab for analysis
  5. Cleaning work spaces and sterilizing equipment

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6 0
2 years ago
The phrase "eating like a bird” is often used to express that someone only eats a small amount of food. Explain in detail why th
inn [45]

Answer:

The phrase "eating like a bird” is inaccurate because the eating habits of birds and the amount of food they consume are a function of their size, activity and metabolism, amount of food that would be insufficient for one person.

Explanation:

The phrase "eating like a bird" establishes a comparison between the feeding of a bird and that of a person, referring to the small amount of food that birds consume.

In fact, birds consume food according to the high energy demand of flying, its weight, size, activity and metabolism. A real comparison would establish that birds even eat more than people.

The feeding of each species is different, and the phrase is inaccurate because it only states that a person who eats little food (less than their requirements) is consuming what would really be enough for a bird.

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