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garik1379 [7]
3 years ago
7

All of the following events occur during normal meiosis except _______. A. two haploid gametes fuse to form a diploid cell B. on

e diploid cell produces four haploid cells homologous C. chromosomes separate from one another D. during meiosis I sister chromatids separate from one another during meiosis II
Biology
1 answer:
lesya692 [45]3 years ago
7 0

Answer:

A. two haploid gametes fuse to form a diploid cell

Explanation:

Meiosis is a type of cell division. When a parent cell with "2n" chromosomes enters the process of meiosis, four daughter cells each with "n" chromosomes are formed. This occurs since homologous chromosomes separate from each other during anaphase-I. However, meiosis does not include the fusion of two haploid cells. The fusion of two haploid cells mainly occurs during the process of fertilization during which a haploid male gamete and a haploid female gamete fuse to form a diploid zygote.

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Which is the first step in the contingency planning process among the options listed here?
AVprozaik [17]

Business Impact Analysis

Business Impact Analysis (BIA) refers to the method of determining the potential risks that a business will encounter when disaster strikes. It is the first step in the contingency planning process. Large businesses with strong disaster recovery planning programs put BIA into their programs, making it one of the important stages. Unless BIA has been conducted, the disaster recovery programs will not be fully developed since the output of BIA will ascertain the strategies and policies that will be in the disaster recovery program of the company.






4 0
3 years ago
The respiratory system branches like the circulatory. Oxygen and carbon dioxide diffuse between the end of these branches and th
Feliz [49]

Answer:

1. Ends of the respiratory branches are called alveoli.

2. C. To control blood flow to different areas of the body depending on activities

Explanation:

1. The trachea divides into left and right primary bronchi which in turn divide multiple times upon entering the lungs and make the bronchial tree.

The final branches of the bronchial tree are the terminal bronchioles that lead to alveoli. The alveoli are the balloon-shaped structures and serve as the site of gas exchange between the blood and inhaled air.  

2. The opening and closing of sphincters of capillary beds regulate the direction of blood flow. The opening of sphincters allows the blood to flow into associated branches of capillary beds while closed sphincters direct the blood from arterioles to venules via thoroughfare channel.

This local change in blood flow is responsible for the autoregulation of blood flow to different tissues to match their respective metabolic demands. For example, during physical activity, more blood is directed to skeletal and cardiac muscles.

8 0
3 years ago
A second action potential cannot be generated until ________.
Bingel [31]

Answer:

"Action potential is a rapid rise and subsequent fall in voltage or membrane potential across a cellular membrane with a characteristic pattern."

It is the mode through which a neuron transports electrical signals.

Explanation:

  • Option - (a) is the best choice to choose from,
  • <u>The refractory period :</u>

A second action potential cannot occur until the membrane has recovered or reestablished, this is the refractory period. The absolute refractory period coincides with inactivation of voltage-gated sodium channels which makes it impossible to generate another nerve impulse.

5 0
3 years ago
Question: Review the images and text about stages 13 (about 32 days) and 23 (about 53-58 days), and compare the limb development
dezoksy [38]

Answer:

n stage 13, all four limb buds are present. In stage 13, the upper limb buds resemble flippers. In stage 23, the upper limb shows well-formed arm, elbow, wrist, and fingers. In stage 23, the lower limb shows well-formed toes, feet, and knees.

Explanation:

6 0
3 years ago
Based on the scenario below, select the statement that accurately finishes the sentence.
Furkat [3]

Answer:

A. damaged her peripheral nervous system because the information regarding taste cannot be transmitted back to her brain.

Explanation:

The nervous system is an important system of our body and is directly related to our survival. This system is linked to the coordination of the organism's various activities and is also responsible for allowing the interpretation of the environment around us.

The nervous system is an important system of our body and allows us to have emotions, to remember an important moment in our lives, to interpret smells, tastes and images, to make movements and even to stay alive through the automatic breathing and heartbeat.

Taste, that is, the sense of taste is directly linked to the peripheral nervous system. For this reason, if Stacey has lost her sense of taste, we can conclude that she has damaged her peripheral nervous system because taste information cannot be transmitted back to her brain.

6 0
3 years ago
Read 2 more answers
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