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Bad White [126]
3 years ago
11

Contrast meiosis with mitosis, mentioning homologous chromosomes, chromatids, tetrads and crossing over.

Biology
1 answer:
Ratling [72]3 years ago
7 0

Answer:

Explanation:

Mitosis takes place in somatic cells of the body while the meiosis takes place in the germ cells. The mitosis is the equational division while the meiosis is reductional division.  

The meiosis has 2 cell divisions i.e. meiosis I and meiosis II. The mitosis is a single division.

The pairing between the homologous chromosome/synapsis occurs in meiosis. It is not found in mitosis.  

During the pachytene stage of meiosis, crossing over takes place. The homologous chromosome exchanges its genetic materials in crossing over.

In mitotic cell division, the chromatids do not exchange their genetic material.

The chromosome numbers are always the same as the parent cell in the mitotic division. In meiosis, the number of the chromosome turns to half of their parent cells.

There are 4 haploid chromosomes/tetrads forms at the end of meiosis. In meiotic division 2 chromosomes form from the parent cells.

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Pretend to be a green plant and tell me about ur day(make sure it explains photosynthesis) *using all my points*
monitta

Answer:

Plants are made up of roots, stems, and leaves, and most produce flowers, fruit, and seeds. ... Using carbon dioxide, water, nutrients, and energy from sunlight, the chlorophyll makes the food that the plant needs. This process is called photosynthesis. During this process, plants release oxygen into the air. During the day, plants soak up sunlight during photosynthesis, the process they use to get energy. But when the sun goes down, plants' opportunity to eat disappears and other physiological processes take over, including energy metabolism and growth. Plants release oxygen during the day in the presence of natural light through the process of photosynthesis. While at night, the plants uptake oxygen and release carbon dioxide, which is called respiration.

Explanation:

3 0
3 years ago
When a hypothesis is supported by the evidence, it is proved to be false. true or false?
VikaD [51]

Answer:

FALSE. because why would something be wrong of it is supported by credible evidence, but if it stated the hypothesis along with the evidence and the evidence isn’t as credible then it could be true but only in that case.

Explanation:

3 0
3 years ago
Why do scientists need to study seismic waves to analyze the interior of the earth and the layers of the earth?
DaniilM [7]

Answer:

Answer 1:

Seismic waves, the waves of energy that travel through the Earth as a result of an earthquake can tell us a lot about the internal structure of the Earth because these waves travel at different speeds in different materials. There are two types of waves that travel through the Earth: p-waves and s-waves.

P- waves are faster and they can travel through both solids and liquids. S-waves are slower and cannot travel through liquids. For both kinds of waves, the speed at which the wave travels also depends on the properties of the material through which it is traveling.

Scientists are able to learn about Earth’s internal structure by measuring the arrival of seismic waves at stations around the world. For example, we know that Earth’s outer core is liquid because s-waves are not able to pass through it; when an earthquake occurs there is a “shadow zone” on the opposite side of the earth where no s-waves arrive. Similarly, we know that the earth has a solid inner core because some p-waves are reflected off the boundary between the inner core and the outer core. By measuring the time it takes for seismic waves to travel along many different paths through the earth, we can figure out the velocity structure of the earth. Abrupt changes in velocity with depth correspond to boundaries between different layers of the Earth composed of different materials.

Explanation:

7 0
3 years ago
Learning Task No. 2: Copy and complete each statement. Choose from the
Lunna [17]

Answer:

1. Aorta

2. Left atrium

3. Right ventricle

4. The pulmonary artery

5. Left ventricle.

Explanation:

The aorta is the main artery of the body that carries the oxygen-rich blood to all the body parts except the lungs from the left ventricle. It is divided into main coronary arteries or blood vessels.

The left atrium is one of the heart chambers, it is located in the upper part of the heart on the right side that receives the oxygenated blood from the lungs through the pulmonary vein.

The right ventricle is the chamber of the heart that pumps the deoxygenated blood to the pulmonary valve to MPA to the lungs to get oxygenated.

The pulmonary artery or the main PA (MPA) carries the oxygen-depleted blood from the right ventricle into the lungs, where blood becomes oxygenated.

The Left ventricle is the thickest muscle chamber of the heart responsible for the pumping oxygen-rich blood to the circulatory system and to the body through the aorta.

8 0
3 years ago
Please answer worth 100 point n what direction does an applied force move an object?
ch4aika [34]

Answer:

1) in the direction of the applied force

2)when the movement is not in the direction of the applied force it is not work. But if a component, or part of the motion is in the direction of the applied force it is work.

3)Joules/sec

4)Force/displacement

6)Wedges and lever

5)conduction

6)radiation

7)there is no heat flow

8)The average kinetic motion of the particles increases, there is more thermal energy

9)The average kinetic motion of the particles decreases, there is less thermal energy

10)transverse wave

11) sound waves

12)they transfer energy through oscillations in matter

13)the speed of the pitched baseball

14)to detect speed and direction of blood flow

15)green and violet are reflected and red is absorbed

16)visible light

17)as heat

18)infrared light/infrared energy

19)reflection

20) yes, the forces emitted by having the same charge repells them.

21)the flow of electrons

22)You open the circuit and the electrons can't flow

23)You closed the circuit and the electrons can flow

24)I think you meant bipolar, this means 2 poles

5 0
3 years ago
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