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
Umnica [9.8K]
3 years ago
13

Describe what is happening in each stage and what each stage looks like: Prophase Prometaphase Metaphase Anaphase Telophase Cyto

kinesis
Biology
2 answers:
otez555 [7]3 years ago
8 0

Answer:

M-phase is the shortest phase of the cell division which lasts for about 1 hour. During M-phase cell separates its genetic material followed by cell division. For this phase proceeds in two stages:

1. Karyokinesis: during which nuclear division takes place. Karyokinesis further divides into four stages mainly :

i. Early-prophase- condensation of chromosomes, formation of mitotic spindle and nucleolus where ribosomes are made disappears.

ii. Pro-metaphase- late prophase in which chromosomes finish condensing, nuclear envelope breaks down, mitotic spindle grows more.

iii. Metaphase- chromosomes aligned at the center of the cell, highly condensed form of chromosomes is seen and kinetochores attached to microtubules from opposite spindle poles.

iv. Anaphase-separation of sister chromatids due to breakdown of cohesin protein.

v. Telophase- chromosomes begin to decondense, establishment of  mitotic spindle is broken down.

2. Cytokinesis: during which cellular division takes place. Cytoplasm divides to form two new cells and we end up with two new cells.

Svet_ta [14]3 years ago
3 0
Prophase is the first phase is when the two sister chromatids pair up and the nucleoli disappears. Prometaphase is the second phase where the microtubules begin to separate from each other, each pair of microtubules attach to the kinetochores and some nonkinetohore microtubules interact with those from the opposite pole of the spindle. Metaphase is the third phase where the chromosomes are lined up on the invisible line of the metaphase plate. Anaphase is the fourth phase where the two daughter chromosomes begin to separate from each other to opposite poles. Telophase is the last phase where the two daughter nuclei form creating two identical nuclei.
You might be interested in
Choose the sentence that best matches the context of the word reticent as it is used in the following example.
inessss [21]

The correct answer is E. He will not readily reveal his feelings.

Reticent can be defined as a person who does not like to talk.

Reticent has different meaning. For example, It can be termed to somebody who is formal and restrained, Somebody who is not able to draw attention to oneself, and also reticent can also refer to a person who refers to seclusion to others.

3 0
3 years ago
Read 2 more answers
A biome is a group of ecosystems that share which of the following?
qwelly [4]
They have the same climate and similar dominant communities
6 0
3 years ago
Read 2 more answers
What are the 3 layers of the Sun from the inner layer to the outer layer?
tankabanditka [31]
The answer is (C) Core, Radiative Zone and then the Convection Zone
5 0
3 years ago
Read 2 more answers
The Offspring produced by a cross between two given types of plants can be any of the three genotypes denoted by A, B, and C. A
ratelena [41]

Complete question:

The offspring produced between two given types of plants can be any of the three genotypes, denoted by A, B and C. A theoretical model of gene inheritance suggests that the offspring of types A, B and C should be in a 1:2:1 ratio (meaning 25% A, 50% B, and 25% C). For experimental verification, 100 plants are bred by crossing the two given types. Their genetic classifications are recorded in the table below.

<em><u>Genotype       Observed frequency</u></em>

    A             →        18 individuals

    B             →        55 individuals

    C             →        27 individuals

Do these contradict the genetic model?  

Use a 0.05 level of significance.

Determine the chi-square test statistic.

Answer:

Do these contradict the genetic model? No, according to the chi-square test, there is not enough evidence to reject the null hypothesis of the population being in equilibrium.  

Explanation:

<u>Available data</u>:

  • Crossed genotypes: two
  • Genotypes among the offspring; Three → A, B, and C
  • Expected phenotypic ratio → 1:2:1
  • Total number of individuals, N = 100
  • A = 18 individuals
  • B = 55 individuals
  • C = 27 individuals

So, let us first state the hypothesis:

  • H₀= the population is equilibrium for this locus → F(A) = 25%,  F(B) = 50%, F(C) = 25%  
  • H₁ = the population is not in equilibrium

Now, let us calculate the number of expected individuals, according to their expected ratio.

4 -------------- 100% -------------100 individuals

1 ---------------  25% -------------X = 25 individuals A

2 --------------  50% -------------X = 50 individuals B

1----------------- 25%--------------X = 25 individuals C

<u>                                                   A                             B                           C</u>

  • Observed                         18                            55                         27
  • Expected                         25                           50                         25
  • (Obs-Exp)²/Exp                1.96                        0.5                        0.16

<u>(Obs-Exp)²/Exp</u>

A)  (18 - 25)²/25 = 49/25 = 1.96

B)  (55 - 50)² / 50 = 25/50 = 0.5

C)  (27 - 25)²/25 = 4/25 = 0.16

Chi square = X² = Σ(Obs-Exp)²/Exp  

  • ∑ is the sum of the terms
  • O are the Observed individuals: 2 in chamber B, and 18 in chamber A.  
  • E are the Expected individuals: 10 in each chamber  

X² = ∑ ((O-E)²/E) = 1.96 + 0.5 + 0.16 = 2.62

Freedom degrees = 2

Significance level, 5% = 0.05  

Table value/Critical value = 5.99

X² < Critical value

2.62 < 5.99    

<em>These results suggest that there is </em><u><em>not enough evidence to reject</em></u><em> the null hypothesis. We can assume that </em><u><em>the locus under study in this population is in equilibrium H-W.  </em></u>

 

6 0
3 years ago
What is the likelihood of a category 5 hurricane making landfall in Maryland?<br>​
Hoochie [10]

Answer: Not likely

Explanation:

Hurricanes can be devastating if they make landfall in an area and even if they do not, can cause excessive rainfall that can lead to flooding in other areas. One of such areas is Maryland.

Even though Maryland has seen its fair share of effects from hurricanes, tropical storms and tropical depressions, there has not been a single storm making landfall at hurricane intensity in Maryland since the mid twentieth century. Hurricane Agnes for instance, caused the deaths of 19 people due to the floods it caused.

7 0
3 years ago
Other questions:
  • What kind of Change makes iron to rust
    12·1 answer
  • How do different animals get the energy they need to live?
    11·1 answer
  • Genetic material that directs the cell is called...
    9·2 answers
  • Earth experiences both long-term and short-term climate cycles. The tilt of Earth's and the change in its shape lead to long col
    13·1 answer
  • Which is not typical of the limbs and locomotion of the primates in general?
    12·1 answer
  • What are the major advantages and disadvantages of using coal, oil, and natural gas?
    13·1 answer
  • In this section write a short paragraph about photosynthesis using the following words in a meaningful way ; Photosynthesis, wat
    5·1 answer
  • This phase is known as _____<br><br> p
    10·2 answers
  • This is a change in genetic makeup of a population or species over time
    6·2 answers
  • How and why does the surface of the earth change<br> of the earth has changed?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!