what is the cause of down syndrome

Answers

Answer 1

Answer:

there is multiple causes is this an acual question??????

Explanation:


Related Questions



Which wave is carrying the least energy, the top wave or the bottom wave in the picture?
Explain.
(5 Points)

Answers

Answer:

I believe the answer is radio waves

Explanation:

But i cant see the writings in the picture very well so can you please write it at the comment place so that I will see if the answer I have given you is right or wrong.

If it is wrong I will correct myself.

Hi, um Question does anyone in the National Honor Society. See I was invited, but the problem is that they never told me if we pay or not to pay. I'm so confused right now also I need help with this question
What type of tissue covers the seeds, stems, and roots of the plant to protect inner tissues from getting damaged?

Answers

Answer: Wow that's great, but

1. National Honor Society has an induction fee of $45 in addition to a $20 membership fee every year. Most students who are members of NHS are also a part of other honor societies and are therefore subject to multiple membership fees. But National Honor Society provides many costs on its own.

2. Epidermis (dermal tissue)

Explanation:

Answer:

1.) National Honor Society has an induction fee of $45 in addition to a $20 membership fee every year. Most students who are members of NHS are also a part of other honor societies and are therefore subject to multiple membership fees. But National Honor Society provides many costs on its own.

2.) Dermal

Explanation:

1st answer and your comment

Thx:

Thanks for the points anyway!

Are there any mammalian cells that would be a good source for dividing cells? What types of cells would most likely not have cells undergoing division?

Answers

Answer:

Explanation:

Thanks for the pointd

H is the allele for long hair

h is the allele for short hair

If a squirrel is heterozygous, what phenotype does the squirrel have?

Question 6 options:

long hair


short hair


Hh


no hair

Answers

Answer:

Long hair

Explanation:

if the squirrel is het3r0zygous, the phenotypical trait would be long hair because states in the question, the allele for long hair is H and it is capital, so unless the question is incorrectly written we must assume H/long hair is dominant trait over little h. the reason Hh is incorrect is because that is the genotypical trait. we can also eliminate short hair because if the squirrel had short hair it's genotypical trait would be hh or h0m0zygous. so long hair is the correct answer.

Write the correct genotype. Use B or b for alleles
11. autosomal recessive disorder-
12. autosomal dominant disorder-
13. female sex-linked recessive disorder-
14. male sex-linked dominant disorder-
15. autosomal carrier-

Answers

Answer:

11. bb

12. BB

13. XᵇXᵇ

14. XᴮY

15. Bb

Explanation:

b is recessive, someone needs 2 of them to express the trait

B is dominant, someone needs 1-2 of them to express the trait

XX is female, b needs to be on both of the X for the female to express the trait

XY is male, traits are always on the X chromosome, so males need a dominant trait to be on the X for the trait to be expressed

A carrier is someone that has the trait, but doesn't express the trait physically

In a nucleotide, the nitrogenous base is attached to the sugar at
A. C1
B. C2
C. C3
D. C5

Answers

Answer:

It's A!!!!!!!!!!!!!!!

what bacteria is this?

Answers

Answer:

I'm not sure but I am pretty sure that it is: streptococcus.

Hope this helps!

What do you call an animal cell after being filled by oamosis?​

Answers

Answer:

An animal cell after being filled by osmosis is called a solution, and because of that the animal cell will burst up by being filled with water and lyse :3

Explanation:

:3

18. Which tool is NOT used in weather stations to collect weather-related data on the ground?

O A. hygrometer to measure humidity

B. barometer to measure air pressure

(C. anemometer to measure wind speed

O D. seismometer to measure ground movement

Answers

Answer:

C: anemometer to measure wind speed

Which of the following statements is true of a gene that is active (expressed)?

Answers

A.The DNA corresponding to the gene is tightly wound around histones.

Answer:

There are many acetyl molecules attached to the histones associated with the gene.

Explanation:

I just checked on my homework. I hope this helps others!

The question is above, I’ll reward brainalist

Answers

Answer:

Yup. Its C or the 3rd option.

Explanation:

Specialized cells perform specialized functions in multicellular organisms. So based on where they are in the body, they have different, specialized function.

What happens in an aphotic zone of a body of water?
O A. Plants grow quickly.
B. Water flows in and out quickly.
O C. There is no photosynthesis.
O D. The water is stagnant.

Answers

Answer:

O C. There is no photosynthesis.

Explanation:

Aphotic zone of a body of water refers to the part where almost no sunlight. With this condition of water, marine life is limited to species who does not light for survival. The aphotic area also is the basin of the dead organism that submerges from the photic part. Temperatures at these areas are also low

In an aphotic zone of a body of water, there is no photosynthesis present (option C), as the aphotic zone is the portion of the body of water that receives little to no sunlight and therefore does not support photosynthesis.

What is an aphotic zone?

The aphotic zone is the deep layer of a body of water that is not reached by sunlight. As a result, there is no photosynthesis in this zone, and plants cannot grow here. Since photosynthesis is the primary means of producing food and energy in most aquatic ecosystems, organisms in the aphotic zone have to rely on alternative sources of energy. In the aphotic zone, organic matter such as dead plants and animals that sink down from the photic zone provide a source of energy for organisms.

Hence, in an aphotic zone of a body of water, there is no photosynthesis present in option C.

Learn more about the apotic zone here.

https://brainly.com/question/4289412

#SPJ7

why can we go for a long time without eating but not breathing

Answers

Breathing is an essential part of the works of the body. If you go a long time without breathing, you’ll die. The reason why you can go a long time without eating is because your body stores the fat to keep you going. Breathing is kind of the building block of the body.

Geotropism is a response to

Answers

Explanation:

Gravitropism (also known as geotropism) is a coordinated process of differential growth by a plant in response to gravity pulling on it. It also occurs in fungi. Gravity can be either "artificial gravity" or natural gravity. It is a general feature of all higher and many lower plants as well as other organisms.

Adenine A will pair up with Guanine G, and Cytosine C will pair up with Thymine (T) on a strand of DNA.
True
False

Answers

Answer:

false

Explanation:

A goes with T

G goes with C

HELP PLSSS !!
Based on this data, what can be concluded about the impact
seasonal changes have on these organisms around the Barents Sea?

A. The availability of solar energy limits photosynthetic productivity in winter months

B. Seasonal Changes have no impact on these organisms

C. During winter months the Diatom and zooplankton population completely die off due
to the lack of sunlight.

D. Due to the availability of solar energy, Diatom mass peaks in July.

Answers

Answer:

D. Due to the availability of solar energy, Diatom mass peaks in July.

Explanation:

Diatom are the photosynthetic algae which prepare food for themselves from the solar radiation just like plants. These diatoms produce more biomass or vegetation in the summer season mainly in July because availability of more sunlight in the Barents sea region while on the other hand, less biomass in the winter season due to low temperature and solar radiation which also effects the population of zooplankton organisms. So we can conclude that seasonal changes have a great impact on the organisms living around the Barents Sea.

Answer:

The availability of solar energy limits photosynthetic productivity in winter months

Explanation:

Trust me

it helps the plant to pollinate the flowers​

Answers

Answer:

Bees or similar inscets.

Bees help pollinate

1.6x10-27
Problem 2 – The mass of Earth is 6.0x1024 kg. The mass of a hydrogen atom is
kg. If the entire mass of the shell were evenly spread out in a sphere with the
shell's radius, how many hydrogen atoms would you expect to find in a cubic meter of
this shell to the nearest 10,000 atoms?
I

Answers

1 - 6x10=60
60-27=33
For number 2 I have no idea sorry

If species is the most specific group shown in the diagram, what is the
scientific name of the red fox species?
A. Vulpes
B. Animalia
C. Vulpes vulpes
D. Eukarya

Answers

Vulpes vulpes is the scientific name of the red fox species

Answer:

C- Vulpes vulpes

The _____ on the out side of the virus are "sticky" and attracted to specific molecules on the outside of animal cells. A. Protein Spikes B. Carbohydrate Molecules C. Cholesterol Markers

Answers

Answer:

A. Protein Spikes

Explanation:

A viruses are defined as the quintessential parasites in the living world. They are a chain of the nucleic acids that lives in a host cell. Without the host cell, all the viruses cannot carry out their life sustaining activities or functions. They are always housed in a protein layer or a protein coat. All the viruses contains the RNA or the DNA. The protein spikes which is on the outside of a virus are "sticky" and they are attracted to the specific molecules of the outside of an animal cells.

List the parts of a cell that are found in all types of cells.

Answers

Answer:

Cell membrane, Nucleus, Cytoplasm & Ribosomes are found in all types of cells.

In which type of rock would you be most likely to find layers?
OA
volcanic
OB.
colored
OC. igneous
OD. sedimentary

Answers

Sedimentary rocks are most likely to find layers

Answer:

Sedimentary.

Explanation:

The layered colors of the Grand Canyon and The Badlands are sedimentary rock. These deposits were made millions of years ago when the North American Continent was underwater and the water level slowly receded.

Determine whether each occurrence is a result of short-term or long-term change. Sort each one to the correct

category.

speciation

Short-Term Change

Long-Term Change

adaptation

loss of habitat

extinction

forced migration

Answers

Answer:

Adaptation and extinction occur as a result of long term change whereas loss of habitat and forced migration results of short term change.

Explanation:

Adaptation and extinction occur as a result of long term change in the environment whereas loss of habitat and forced migration is a result of short term change in the environment. Adaptation occurs in the organism as a result of climate change because when the climate change occurs some organisms are extinct due to intolerance of the change environment whereas some organisms adapt the environment by making some changes its physical structure in order to survive. Loss of habitat and forced migration occurs due to sudden big change in the environmental conditions such as flooding and volcanic eruptions.

Answer:

Explanation:

because

BIOLOGY CIRCULATORY SYSTEM!! WILL NAME BRAINLIEST IF YOU ANSWER CORRECTLY!!

Answers

Answer:

C, G, F, I, H, D, A, E, B

They are in order from top to bottom

Which of the following is not true about innate behavior? *

it is an inherited behavior
it does not change through generations
it is an instinct behavior
it is based on stored memory information

Answers

The answer is:Instinct is the inherent disposition of a living organism toward a particular behavior. Instincts are generally inherited patterns of responses or reactions to certain kinds of stimuli. Instinctive behavior can be demonstrated across much of the broad spectrum of animal life.

The main characteristic of innate behavior is that it is not a learned behavior. It does not need previous experience. So the option that is not true about innate behavior is D. it is based on stored memory information.

-----------------------

Innate behavior is the one that is NOT LEARNED as a result of experience.

In contrast, innate behavior does not need previous experience.

Animals are born with this knowledge, which means that it is genetically programmed and might be performed as a response to a specific signal with no previous experience.

This behavior is inherited pattern of responses, passed from parents to progeny, from generation to generation.

The whole species behaves equally.

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QUESTION 12
Trump was right when he was quoted as saying that India and China do not border one another.
O True
False

Answers

Answer:

false because they do bond

False , now China is trying to get Arunachal Pradesh

Match the behavior type with the corresponding action.
1. hibernation
habit
2. riding a bike
conditional response
3. getting sleepy at bedtime
trial and error
4. brushing your teeth
reflex
5. sneezing
instinct

Answers

Answer:

hibernation - conditional response

riding a bike - trial and error

getting sleepy at bedtime - instinct

brushing teeth - habit

sneezing - reflex

Which of the following scenarios is an example of temporal isolation?


A.

Fossil evidence suggests that a number of members of one squirrel species evolved over time into two separate species, each on opposite sides of the Grand Canyon.


B.

Black-eyed Susans and daisies used to be part of the same species. A random mutation in a subset of a population caused one group to release their pollen three weeks before the other, causing interbreeding to cease.


C.

Two species of tree crickets live in a Costa Rican dry forest. Their habitats and ranges overlap. The two species never interbreed because the calls of the males are different and do not attract females of the other species.


D.

Indian paintbrush flowers vary greatly in color. Bumblebees form a search image for the most average common color and preferentially pollinate those flowers.

Answers

Answer:

B. Black-eyed Susans and daisies used to be part of the same species. A random mutation in a subset of a population caused one group to release their pollen three weeks before the other, causing interbreeding to cease.

Explanation:

Temporal isolation, where temporal relates to time. So temporal isolation is the process where two populations will reproduce at different times/different seasons and therefore cause a split in species. In this case, we see the flowers release pollen at different times and caused a split into two distinct species.

Select the statement that BEST answers the following question
based on the information provided.
Milk is uniformly mixed it contains several compounds--
water, proteins, fats, and sugars. Is milk considered a
substance or a mixture?
a
It is a liquid substance with uniform composition.
b It is a mixture, only solids are pure substances,
It is a mixture that can be separated by physical
means
d It contains compounds and is therefore a
substance

Answers

C Milk is a mixture. Most people think of the stuff we buy at the store as milk. However, the stuff that comes from the cow can easily be separated into different things to make butter, buttermilk, and the various percentage fat milks. In fact, the milk we buy has to be emulsified so it doesn’t separate.

In this assignment, you will conduct research to construct an explanation of how macromolecules are used in the body. You will then revise your explanation based on new information from additional research. 100 Points make it good

Answers

Answer:

What is a macrocolecule?

A biological macromolecule is a very large molecule that is built from smaller biological, or organic, molecules that are linked together by covalent bonds.

Macromolecules are necessary for an organism’s growth and survival

There are four major classes of biological macromolecules. Carbohydrates, Proteins, Fats, and Nucleic acids (DNA and RNA)

What do you notice about the atoms that make up these molecules?

Carbs-They contain carbon, hydrogen, and oxygen and include the sugars, starches, and fibers that are found in grains, fruits, and vegetables.

Carbohydrates are important for brain function, and they provide energy for working muscles and the central nervous system.

Protein- This type of macromolecule can be found in meats, poultry, fish, eggs, dairy products, nuts, and legumes.

Protein is necessary for building and repairing muscle mass, and it helps maintain a healthy immune system.

There are about 20 amino acids,most prevalent in these are carbon, hydrogen, oxygen, nitrogen, and sulfur.

Fats-are used by the body as energy and to store fat-soluble vitamins (vitamins A, D, E and K). They also insulate the body and protect vital organs.

The human body stores excess fat in specialized cells called adipocytes.

consists of two main components—glycerol and fatty acids.

What happens to macromolecules from food during digestion?

Glycolysis can be best explained as a series of chemical reactions that extract energy from glucose. This process occurs in liver cells. At the start of glycolysis, a molecule of glucose (C6H12O6) is trapped and destabilized, or broken down into two three-carbon molecules. These molecules are called pyruvate. The net products of the process are two molecules of ATP—four molecules of ATP are actually produced, but two are used up—and two molecules of NADH. The liver also metabolizes other macromolecules,

If there is not enough carbohydrate intake, how does the body form glucose?

When there is a shortage of fats or carbohydrates, proteins can also yield energy.

Fats typically provide more than half of the body's energy needs.

If not enough protein is provided by the diet, the body starts chewing on muscle cells.

If there is a glucose shortage, how does the body produce energy?

glucose can be made in the liver and kidneys using protein from elsewhere in the body.

What atoms make up sugar molecules, amino acids, and fatty acids?

Sugar molecules - Glucose, Amino Acids - Proteins, Fatty Acids - Fat

Explanation:

These are the questions that you're supposed to answer in the essay. just arrange them into an essay format and change some stuff and add more so its not plagiarized. or just write the thing on your own bc thats what youre supposed to do : )

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