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Gelneren [198K]
3 years ago
8

In what phase of meiosis are tetrads pulled to opposite poles of the cell?

Biology
1 answer:
VikaD [51]3 years ago
7 0

Answer:

Anaphase I

Explanation:

In anaphase I, the homologous chromosomes are pulled apart and move to opposite poles.

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What is this an example of?
Assoli18 [71]

Answer:

I think it's an example of equilibrium

8 0
2 years ago
Based on the anatomical and physiological differences between an infant and an​ adult, which finding would suggest respiratory d
frosja888 [35]

Answer: Excessive movements of the walls of the  abdomen

Basically babies belly breathe, that is they undergo abdominal pattern of respiration( instead of the abdomino- thoracic pattern in  adult), through their abdomen.

<u>This is because,  their thoracic walls are not fully functional to undergo  the normal adult mechanisms  of breathing</u>.

<u>The ribs are short in length due to incomplete ossification. They curve out wards, at low angle, their sternum, is shaped horizontally.</u>

These features reduce the activities   of the inter coastal muscles and the thoracic cage  in the mechanism of  infants breathing,compare to the long ribs, obliquely shaped rib cage,  with lower  sternum  of  adult which  permit the  abdominal-thoracic  breathing pattern.

Therefore ,when the diaphragm distends during breathing ,its movement pushes the organs of the abdomen down; because infants have rapid respiratory  rates, the distends created  rapid  expansion and contraction of the walls of the abdomen to gain enough abdominal pressure.

This together with the movement of  organs of the abdomen   from  the  pathways of diaphragm  created the  excessive  movements of the abdominal walls. This rapid abdominal wall movements creates discomfort and distress for the infant during this mechanisms.

Explanation:

7 0
3 years ago
I’m a scientific investigation the term quantitative data refers to niñera that are usually followed by
olchik [2.2K]

Answer:

<em>In a scientific investigation the term quantitative data refers to numbers that are usually followed by a unit.</em>

Explanation:

A scientific investigation can be described as an investigation which is made through the scientific method of research. A scientific question is often tried to be answered through valid experiments by this method. The experiments performed can either be quantitative or qualitative. Quantitative data is the data which is taken through mathematical or statistical methods and has a well-defined unit in which the measurements or numbers are being taken.  

5 0
3 years ago
A mutation that involves the addition, subtraction, or substitution of a single base is known as.
xeze [42]

inversion

mutation that involves the addition, subtraction, or substitution of a single base is known as an inversion. polypoloidy. a chromosomal aberration.

8 0
2 years ago
Read 2 more answers
Pancreatic cells, which secrete a large amount of digestive enzymes, are labeled with radioactive leucine and then chased for se
LiRa [457]

Answer:

Option-C

Explanation:

A pulse-chase experiment which is used to study the cellular process taking place in the cells. This uses the labelled molecule which is incorporated into the cellular pathway and then the unlabeled molecules are used over time to determine how much time is required by the unlabeled molecule to replace the labelled molecule.

In the given question, the pancreatic cell which secretes the digestive enzyme known as the acinar cell is labelled with the leucine and then used unlabeled leucine.

When observed after three hours, the black spots will appear on the exterior of the cell as the protein has been synthesised by the ER and now has been secreted from the cell.

Thus, Option-C is the correct answer.

5 0
3 years ago
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