why must the life cycle of sexually reproducing species alternate between haploid and diploid stages?

Answers

Answer 1

Answer: Meiosis must occur at some point in the life cycle to prevent a doubling of chromosomes in each generation.

Explanation:

Answer 2

Meiosis has to take place at some point in the life cycle in order to stop the chromosome count from doubling with each new generation.

What is meiosis?

Meiosis is a specialised kind of cell division that occurs in the germ cells of animals that reproduce sexually. This form of cell division is responsible for the production of gametes, such as sperm and egg cells. This process requires two rounds of cell division, and at the end of it, there are four cells that each have a single copy of each chromosome.

Meiosis results in the formation of four haploid daughter cells, each of which has the potential to differentiate into either sperm or egg cells in the future.

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Related Questions

what type of literature may a systematic review include to be considered level 1 evidence on the melnyk & fineout-overholt levels of evidence hierarchy?

Answers

A systematic review may include randomized controlled trials to be considered level 1 evidence on the Melnyk & Fineout-Overholt levels. They developed a system for assigning levels of the evidence hierarchy.

In nursing, a widely used system for assigning levels of evidence is derived from Melnyk and Fineout-Overholt's book.

B. Mazurek Melnyk and E. Fineout-Overholt developed the 'Advancing Research and Clinical practice through close Collaboration' model, which can be used to sustain the evidence-based practices in the healthcare systems.

Moreover, a randomized controlled trial is a type of experimental design where the sample to be used is selected at random from the eligible (target) population.

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standing on your tiptoes requires contraction of which lower leg muscle?

Answers

When you are in plantar flexion, or standing on your toes, your calves retract in order for this to happen.

Does a sphygmomanometer give a digital reading of blood pressure?

Answers

Answer:

A sphygomanometer gives a digital reading of blood pressure.

True or False a person A person who exersices self dicpilne is taking a step towards improving his or her health

Answers

Answer:

it should be true because its improving yourself but it all depends on how you dicipline yourself.

i gave someone i dont really know but like answers to something and when they gave it back they said "you're a real one" what does that mean?

Answers

Answer:

You got there respect,or basically a thank you

Explanation:

A lot of people say it,im not really sure why because it means a real friend,and ive been told that by people ive talked to like once,its weird,but yeah thats what it means

Answer: person in your life who is always themselves and keeps it 100 at all times with you. This might not make sense since you don't the person but they were basically saying they appreciate the answer. You told them the true answer and not a made up one. You know what I mean?

Explanation:

Make it a detailed explanation.
I will give you multiple points and make you brainliest.
The essay is: How to best promote the most humane treatment of felines.
You don't need to write the essay just give me some reasons and definitions.

Answers

Have your cats neutered or spayed.

Keep your cat's safe by keeping them inside.

Keep your cats' identity visible at all times.

Veterinary treatment should be provided on a regular basis...

Predation on birds and other wildlife by outdoor cats is a genuine and legitimate worry.

I have a question, but it's not really for school.
I have ADHD, and I want to stop procrastinating. How do I do it?

Answers

I don't know much but I might be able to help. I would recommend focusing on like a hard chore or a task for 45 minutes. I usually put my phone or what other thing is keeping me from doing something in an other room. Once your 45 minutes is up I would recommend taking a short 15 minute brake.

Which of the following health services should communities NOT provide to prevent and treat communicable diseases? A. Warn citizens of potential threats B. Provide regulations for food and water supplies C. Support communities with vaccinations and health clinics D. Eliminate diseases by adding medicine to drinking water Please select the best answer from the choices provided. A B C D.

Answers

The health services should NOT eliminate diseases by adding medicines to drinking water. Health services cannot alter the quality of potable water.

Healthcare services represent public services and/or institutions aimed at providing medical care.

Healthcare services include:

Dental careLaboratory careDiagnostic careDrug abuse treatmentMental health carePreventative care

These services (healthcare services) must follow certain guidelines to protect the health of their patients and entire populations.

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Answer:

D

Explanation:

Very few people intend to make bad decisions. They often happen because a minor poor decision leads to a string of poor decisions that can have serious consequences. Give an example from your life or someone that you know of how this can happen. Consider the outcome on the individual and the family. How would have making a different decision in the initial phases changed the outcome?


I couldn't really come up with a good idea...

Answers

Answer:

the person who take is good person never take bad decision

If you can complete more than 20 repetitions over three sets with your current weight, you should __________. A. Increase the weight until no more than 20 repetitions and three sets are possible B. Decrease the weight and increase the number of sets to 8 to 10 C. Increase the weight until you can do no more than 2 to 4 repetitions in three sets D. Keep the weight the same and increase the number of repetitions and sets until you are tired Please select the best answer from the choices provided. A B C D.

Answers

Progressive overload is defined as the gradual increase in the number of repetitions in the training routine, weight, or frequency.

The correct statement for the blank is:

If you can complete more than 20 repetitions over three sets with your current weight, you should increase the weight until no more than 20 repetitions and three sets are possible.

The progressive overload can be explained as:

1. The human body in the training routine should gradually increase the intensity, frequency, or repetitions to challenge the muscular tissues of the body.

2. The muscle tissues adapt to more load if the weight is increased gradually. If someone can complete 3 sets with 20 reps, then the person should increase the weight until the individual reaches 20 reps in 3 sets.

Therefore, the correct answer is Option A.

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Which is a reason for using good hygiene practices?

Answers

Answer: Personal hygiene is how you take care of your body. Maintaining hygiene practices reduces the spread of illness and risk of medical conditions caused by not taking care of yourself. It also increases self-confidence and positively impacts personal relationships.

Explanation:plz give brainlist

Answer:

A good reason for this is to keep up with health and your wanted body statu

s

Explanation:

To avoid fad diets, what kind of diet should you choose?
A diet that eliminates foods groups
A diet that requires you to eat special food
A diet that is endorsed by a celebrity
A diet that educates you about how to make lifestyle changes

Answers

Answer:

diet that educates u about how to make lifestyle changes

Answer:

A diet that educates you about how to make lifestyle changes

pulmonary function tests are useful in monitoring which condition?

Answers

Pulmonary function tests are useful in monitoring asthma, chronic obstructive pulmanory disease, pulmanory fiborosis, pulmanory emphysema and other lung related conditions.

Cheryl is studying for an exam. While reviewing her flash cards, she notices that she will need to identify a variety of different types of patient transfers. What is NOT an example of a patient transfer?

Answers

Answer:

C

Explanation:

You are moving them from a chair to another chair, so it is not a change.

Answer:

C

Explanation:

Which of the following is the most healthful meal plan?
O A. Hamburger, fries, milkshake
O B. Hamburger, macaroni and cheese, soda
C. Hamburger, salad, milk
O D. Hamburger, fries, fruit smoothie

Answers

The most healthful meal plan among the options provided is Option C: Hamburger, salad, milk.

Option A (Hamburger, fries, milkshake) and Option B (Hamburger, macaroni and cheese, soda) contain high-fat and high-calorie items such as fries, milkshake, macaroni and cheese, and soda, which are not considered as healthy choices.

Option D (Hamburger, fries, fruit smoothie) is relatively better than Options A and B because it includes a fruit smoothie instead of a milkshake or soda. However, it still contains fries, which are typically high in unhealthy fats.

Option C stands out as the most healthful choice as it includes a hamburger for protein, a salad for vegetables and fiber, and milk for a calcium source.

The hamburger provides protein, which is essential for building and repairing tissues.

The salad offers a variety of vegetables that provide essential vitamins, minerals, and fiber, promoting overall health.

Milk is a good source of calcium, which is vital for maintaining strong bones and teeth.

This meal plan balances protein, vegetables, and calcium, making it a more nutritious and healthful option compared to the other choices.

In conclusion, Option C (Hamburger, salad, milk) is the most healthful meal plan among the given options, providing a balanced combination of protein, vegetables, and calcium.

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Which statement describes instances of harassment rather than bullying?
A)Kaylee is teased because she is the smallest person in her class.
B)Alys is often excluded because she is a lesbian.
C)Connor is often shoved on the playground by older children.
D)Hanna is often gossiped about by a group of girls in her class.

no links!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

B. Alys is often excluded because she is a lesbian.

Explanation:

Hope it helps!

when does your stomach get bigger during pregnancy

Answers

Answer:

between 12 and 16 weeks

Explanation:

what percentage of babies are born on their due date

Answers

Answer:

4-5% chance

Explanation:

Only about 2-5% women give birth on their due date. Around 80% women give birth between 38-42 weeks. Around 11% women give birth "prematurely" - i.e. before 37 weeks.

When transferring a patient, you should place one foot slightly in front of the other.

Answers

Answer:

true

Explanation:

true

Which of the following activities does NOT improve stability? A. Maintaining a narrow base B. Lowering your center of gravity C. Doing balancing exercises D. Leaning into oncoming forces Please select the best answer from the choices provided. A B C D.

Answers

Stability is defined as the ability of the body to maintain an equilibrium posture and the movements supporting and balancing the body.

The activities that improve the stability are:

1. The center of gravity is lowered and placed near the base of support to increase the stability.

2. The distance between the feet should be increased to improve stability. The narrow base results in the instability of the posture.

3. The balancing exercises like squats and lunges also lead to improvement in the stability of the body.

Thus, the narrow base decreases the stability. The correct answer is Option A.

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How ia an organ different from a body system

Answers

Because an organ is a group of tissues that work together for the overall function of the organ, and an organ system is a group of organs that work together to perform a specific function.

As he is helping a patient scoot to the edge of their wheelchair, Gaston is coaching them on their foot placement. To help ensure the patient has a strong base of support to transfer from the wheelchair to another chair, how should Gaston tell them to place their feet?

Answers

Answer:

jrjejemjeme k ekekkej3

Survival floating is a technique to increase chances of survival if caught without a life jacket in deep, cold water.

Question 3 options:
True
False

Answers

Answer:

yes this is true!

Explanation:

because if in the ocean you use the technique survival floating as a way to not drown if not having a life jacket

which example is the correct way to record apical pulse?

Answers

Answer:

AP 68 strong and regular

Explanation:

mindful imagery, or visualization, has been shown to be helpful for improving performance of physical tasks and reducing stress.

Answers

If this is a true or false the answer is true positive visualization is used by many athletes Or really anybody trying to reach a difficult goal

Positive visualization  is used by many people to reach a difficult goal.

What is positive visualization ?

Positive visualization is a wellness technique that has been used for centuries to prime the mind.

Does positive visualization work?

To your brain, positive visualizing success is as real as actually achieving success and it reduces your energy to continue working toward your goal. That's because your brain believes that you've already achieved your goal.

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1.
The ball is placed on the _________ yard line to start the game in a high school game.
10
30
35
40

Answers

Answer:

20 yard .

Explanation:

The game starts with a kick off or a throw off to the opposing team. At the 20 yard line or 1st marker from end zone

at the kicking team's 35-yard line (40 for high school). but what i would actually say is 14 yards lines

Plz help me. NO LINKS OR TROLLS

If you are receiving professional help for a mental health problem and the provider prescribes you to take some medication, you are receiving help from a:
A.
Psychiatrist
B.
Trusted adult
C.
Counselor
D.
It could be from any of the above

Answers

A. Psychiatrist

Explanation:

A psychiatrist should be the only one prescribing medication

Which of the following is true about the behavior of an organism?
A.
The behavior of an organism is not influenced by either its heredity or its environment.
B.
The behavior of an organism is influenced only by the environment in which it lives.
C.
The behavior of an organism is influenced by both its heredity and its environment.
D.
The behavior of an organism is influenced only by the traits it inherits from its parents.

Answers

C.The behavior of an organism is influenced by both its heredity and its environment.

Answer:

B

Explanation:

"Behavior is shaped by natural selection. Many behaviors directly increase an organism's fitness, that is, they help it survive and reproduce."

Hows your day! I need to know I will mark with heart and 5 stars I can mark brinlest yet though so srry

Answers

Answer:

very good

Explanation:

My day is going very good today

Which statement describes instances of harassment rather than bullying?
A)Kaylee is teased because she is the smallest person in her class.
B)Alys is often excluded because she is a lesbian.
C)Connor is often shoved on the playground by older children.
D)Hanna is often gossiped about by a group of girls in her class.

Answers

Answer:

C)Connor is often shoved on the playground by older children.

Explanatio

Answer: The other answer is wrong its B

Explanation:

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