1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ryzh [129]
3 years ago
6

Read each of the sentences that describe what happens either during mitosis or meiosis. Drag each sentence into the correct box.

Biology
1 answer:
seraphim [82]3 years ago
5 0

Complete question:

In the attached files you will find the sentences used to complete this problem, and their corresponding boxes.

Answer:

Mitosis:

  • Homologous chromosomes do not pair
  • One row of chromosomes line up in the center of the cell
  • The cell nucleus divide only once
  • Two diploid daughter cells form that are identical to their parental cells

Meiosis:

  • Each replicated chromosome pair with its corresponding homologous pair
  • Tetrads form, and crossing-over sometimes occur
  • Paired homologous chromosomes line up across the center of the cell
  • Four haploid daughter cells form that are not identical to their parental cells

Explanation:  

There are two principal types of cells in the organism: Somatic diploid cells (2n) that reproduce by the process of mitosis, and germ cells that are diploid reproductive cells in charge of gamete production. These germ cells suffer both mitosis (to form more sexual cells) and meiosis (giving place to haploid gametes, called sperm and egg cells, through the gametogenesis process). Both somatic cells and germinal cells will end their cycle becoming two daughter cells with the same genetic dotation.

Gametes´destiny is to merge in the process of fecundation, during which a new diploid cell called zygote emerges through fertilization. The zygote is a complete cell from the structural point of view that suffer successive mitosis to form the new organism.

  • <u>Meiosis</u> is a process by which, from a diploid germ cell (2n), four daughter cells with a haploid chromosome number (n) are produced. Each daughter cell has half of the chromosomes of the original one. There are two phases in meiosis: the first one in which occurs a chromosome´s reduction division, and the second one where the cell suffers a new division, but this one is not a reductive one.
  1. In the first phase, Meiosis I: Chromosomes condensate and became visible. Occurs crossing-over between homologous chromosomes in the equatorial plane. Crossin-over makes the daughter cells to be genetically different from the original one. After crossing-over, homologous chromosomes get separated again. Then occurs cytokinesis and chromosomes became lax again.
  2. In the second phase, Meiosis II: Chromosomes condensate again, they join the spindle apparatus and migrate to the equatorial plane. Centromeres divide and each chromatid goes forward to each pole. Once in the poles the chromosomes became lax again and occur cytokinesis.
  • Mitosis is a process by which, from a diploid somatic cell (2n), two daughter diploid cells (2n) are produced. During mitosis, the cell duplicates and then separates. Mitosis occurs in only one phase. In the prophase, it occurs chromosomes condensation and nuclear membrane breaks. During the metaphase, fibers of the spindle apparatus capture chromosomes and take them toward the center of the cell, to the equatorial plane, where they line up. Each chromatid joins with a microtubule of opposites poles. Sister chromatids are held together until they reach the Anaphase, during which other enzymes are activated to break the bonds and separate the chromatids, which migrate to the opposite poles. In telophase, the duplicated chromosomes are already in the corresponding poles, and the nuclear membrane forms again in each pole. Finally, occurs cytokinesis.  

You might be interested in
Tumor-suppressor genes help prevent uncontrolled cell growth. One that is found mutated (and therefore nonfunctional) in more th
Paha777 [63]

Answer:

p53 helps the cells from passing on mutations that lead to DNA damage. Hence, it is known as the guardian angel of the cell as it helps fight against cancer. However, if p53 becomes defective or missing, then the mutations will lead to cancer.

Mutations in the p53 can also cause the tumor-suppressing genes to convert into tumor causing genes. Hence, mutations in such kind of genes can be very harmful for the body.

4 0
3 years ago
Aerobic respiration extracts more energy from a glucose molecule than any other type of respiration. Why might some organisms th
a_sh-v [17]

because the products of the process, such as ethanol, contain more energy than does carbon dioxide, the product of aerobic respiration.

8 0
3 years ago
If 1ml of milk weighs approximately 1g then what is the milk fat percentage for whole milk
melisa1 [442]

1ml of milk = 1g of milk<span>
and in 1 gram of whole milk, there is only one calories
and in whole milk the percentage of milk fat is 3.25%</span>

To get the percentage of milk fat, divide the grams of fat present in milk by the total weight of milk and then multiply by 100.

<span>There are many types of milk, like skimmed milk, low fat milk, partly skimmed, raw milk, whole milk etc. in all these types the percentage of milk fat is different.</span>

4 0
3 years ago
The energy role of a grizzly bear is that of a --- because it can not make it's own food
lesya [120]
The energy role of a grizzly is that is is a omnivorous consumer because it is not a producer.

A grizzly bear's diet consist of both plants and animals as it relies on the food it eats for energy consuptions. It is incapable of producing energy with photosythesis, hence it is not a producer.
3 0
3 years ago
The "ribopart in the name deoxyribonucleic acid refers to the a. Rungs of the spiral ladder b. Bonds that hold two strands toget
Artemon [7]
Logs in the African tunnel of dog hair
3 0
2 years ago
Other questions:
  • Which of the following would most likely be key to gathering evidence that the "RNA World" hypothesis is valid? (2 points) Creat
    9·2 answers
  • Why does biodiversity matter?
    7·1 answer
  • What is it called when you interpret the things you observe
    6·2 answers
  • The spinal cord transfers messages from the brain to the _______________________
    14·1 answer
  • Autopsy conducted on an individual who had died of pneumonia revealed bluish-green pus filling the lung. The causative agent of
    5·1 answer
  • Please help me I’m having trouble answering this
    15·2 answers
  • Most meteoroids burn up in this layer
    11·2 answers
  • Which one of the following was not described as part of the eukaryotic endomembrane system?
    13·1 answer
  • 15) naturally occurring variations within a species are mainly the result of
    9·1 answer
  • In a particular case of secondary succession, three species of wild grass all invaded a field. By the second season, a single sp
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!