a child is born with downsyndrome when did the mutation occur

Answers

Answer 1
it occurred during meiosis.
just took the test, hope this helps:)

Related Questions

How many amino acids are coded for by the strand of mRNA shown below? Assume the reading frame begins with the first nucleotide.
CGA UAC

Answers

Answer:

2 ..........................

Answer:

2

Explanation:

Two for the win!

A pea plant with purple flowers is crossed with a pea plant that has white flowers. All the offspring are purple, so we can conclude that

Answers

Answer:

That the purple trait is dominant and the purple pea plant has a gene type of PP and the white flower has a gene type of pp

what is the powerhouse of the cell​

Answers

the powerhouse of a cell is mitochondria

Answer: mitochondria

Explanation: ur welcome

A pitcher throws a ball toward a player holding a softball bat. The player uses the bat to hit
the ball. The bat applies a 10-newton force to the ball.
Which statement correctly describes the reaction force between the bat and ball?
A The reaction force is the force that causes the ball to move toward the bat.
B The reaction force is the force applied to the bat by the player holding the bat.
C The reaction force is the force that pulls the ball toward the ground.
D The reaction force is the force of the ball on the bat.

Answers

Answer:

D

Explanation:

The reaction force is the force of the ball on the bat

Answer:

The answer is B

Explanation:

According to Newton's third law, for every action, there is an equal and opposite reaction. In other words, an interaction between two objects results in the two objects exerting forces upon each other.

In a solution, salt is considered the
solute
solvent

Answers

Answer:

Solvent

Explanation:

Salt is considered the solute

Please help me! It's earth science

Answers

In order from top to bottom:
Foliation
Impact metamorphism
Compaction
Burial metamorphism

Answer: In order from top to bottom:

Foliation

Impact metamorphism

Compaction

Burial metamorphism

Explanation:

The more classification levels that two organisms share,

A) Group of answer choices

B) The easier it is to tell them apart

C) The more directly related they are

D) They closer together on Earth they live

The more twins they are

Answers

Answer:A or the more twins they are

Explanation:

10 points
41
Which statement best describes how a vaccination can help protect
the body against disease?
Vaccines directly kill the pathogen that causes the disease,
Vaccines act as a medicine that cures the disease
Vaccines cause the production of specific molecules that will react with and destroy
certain molecules
Vaccines contain white blood cells that engulf harmful germs and prevent them from
spreadin throughout the bodyg

Answers

vaccines cause the production of specific molecules that will react with and destroy

IF Im not wrong it’s the last one. Vaccines contain white blood cells that engulf harmful germs to prevent them from spreading throughout the body.

sub atomic particles found in protons and neutrons are what?

Answers

Answer:

thus , protons and neutrons are no more indivisible than atoms are ; indeed , they contain still smaller particles , which are called quarks . quarks are as small as or smaller than physicists can measure

Explanation:

I agree with the person on top have a good day:)

Is the mass–kinetic energy relationship directly proportional (as one variable increases, the other increases) or inversely proportional (as one variable increases, the other decreases)?

Answers

Answer:

The kinetic energy of a moving object is directly proportional to its mass and directly proportional to the square of its velocity.

Explanation:

The mass-kinetic energy relationship is ; Directly proportional

The Kinetic energy of an object is directly proportional because an increase in the kinetic energy of a moving object leads to an increase in the mass of the object and also to the increase in the velocity of the object squared.

i.e. K.E ( kinetic energy ) = [tex]\frac{1}{2} mv^2[/tex]

Hence we can conclude  that the mass-kinetic energy relationship is directly proportional.

Learn more : https://brainly.com/question/12337396

What would need to happen for the sand on the beach to turn into a rock? Explain the necessary steps.

Answers

Answer:

Bacillus pasteuri, naturally occurring bacteria, can be used to turn sand into sandstone (calcite cement). This relatively simple process creates durable, low cost building materials. The technical name for this is microbial-induced calcite precipitation (MICP).

While taking a nature walk with their class, students observe many mushrooms growing among the fallen leaves on the forest floor.




– What is the role of mushrooms in the forest ecosystem?

– What other type of organism performs a similar role in the forest ecosystem?

This is for a writing thing can u guys write about it I really need help thank u

Answers

Answer:

The mushrooms act as decomposers, there are many other species that also does this such as worms

Can you guys help me?

Answers

Answer:

first one is active transport sorry cant help with the rest

Explanation:

Epistasis, such as albinism, is a result of ______. polygenic inheritance. multiple alleles. incomplete dominance. . codominance.

Answers

Polygenic inheritance

NEED BIO HELP ASAP 30 POINTS !!!!!!!!!!!!!!!!!!!!!!

Answers

1. Cell starts into mitosis phase of the cell cycle.

2. Helicase begins to break the hydrogen bonds between the nitrogen bases. (The double helix has to be unwound in order to expose the nucleotides)

3. DNA polymerase attach the free-floating nucleotides to the exposed nitrogen bases. (this allows a new DNA strand to be made on the existing one)

4. Free floating nucleotides pair up with exposed nitrogen bases (this is what really builds the new strand, based around the template strand)

5. Two new molecules of DNA are created

Statements:

Adenine

Cytosine (Car in the Garage, Apple in a Tree is a good trick to know how they pair)

DNA

Replication

Double helix

are are the two processors that obtain energy

Answers

Different Types of Processor
Microprocessor. The fundamental process of the system is denoted by a microprocessor incorporated in the embedded systems. ...
Microcontroller. The microcontroller is standard which is available in different size and packages. ...
Embedded Processor. ...
Digital Signal Processor.

21. The graphs show the results from an investigation of relative enzymatic activity of four different enzymes in acidic and basic environments.

Which enzyme would most likely function well in the stomach?
Pepsin
Papain
Chymotrypsin
Cholinesterase

Answers

The answer will be papian

DNA _____________________ after transcription.

Answers

Answer:

after Transcription DNA is copied into a new molecule of messenger RNA. DNA safely and stably stores genetic material in the nuclei of cells as a reference, or template.

Explanation: happy to help :)

IF YOU WANT POINTS HERE YOU GO!!! ANSWER THE QUESTIONS CORRECTLY AND I WILL MARK BRAINLIEST!!! ON THE THIRD PICTURE, ANSWER THE HIGHLIGHTED PARTS. BE SURE TO READ THE DIRECTION CAREFULLY!!!!!!!!!

Answers

6.) TT=Ability to Roll Tongue Tt=Ability to Roll Tongue tt=Can’t Roll Tongue
7.) HH=Mid-finger Hair Hh=Mid-finger Hair hh=No Mid-finger Hair
8.) CC=Cleft Chin Cc=Cleft Chin cc=No Cleft Chin

For the next parts, I will need to message the Punnett square charts to you. Got an insta?

Describe how you would use Random Sampling to determine the population of dandelions in your yard.

Answers

Answer:

randomly select different areas to count the dandelions, average the numbers and then multiply by the number of plots your grid contains. 6. In a forest that measures 5 miles by 5 miles, a sample was taken to count the number of silver maple trees in the forest.

Random sampling is used in sampling biological products. It is made up of subsets from the larger population in which the subset of individuals is selected randomly with equal probability.

It is used to collect the data for your research work.

For sampling the dandelions randomly we will first choose a distinct random area for computing the dandelion.

Estimate the average of the numbers determined before.

Now multiply the average with the design your framework contains or with the total number of squares in the yard.

Therefore this is how you calculate the random sample size.

To learn more about random sample size follow the link:

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Which of the four factors that affect evolution apply to the finches that the Grants studied? Use
evidence from your research to support your answer. (15 points)

Answers

Answer:

Natural Selection in Real Time

"When we made the comparison between the size of the offspring generation and the population before selection, we found a measured, evolutionary response had taken place and it was almost identical to what we had predicted."

-Peter Grant

Darwin thought that evolution took place over hundreds or thousands of years and was impossible to witness in a human lifetime. Peter and Rosemary Grant have seen evolution happen over the course of just two years.

The Grants study the evolution of Darwin's finches on the Galapagos Islands. The birds have been named for Darwin, in part, because he later theorized that the 13 distinct species were all descendants of a common ancestor. Each species eats a different type of food and has unique characteristics developed through evolution. For example, the cactus finch has a long beak that reaches into blossoms, the ground finch has a short beak adapted for eating seeds buried under the soil, and the tree finch has a parrot-shaped beak suited for stripping bark to find insects.

The Grants have focused their research on the medium ground finch, Geospiza fortis, on the small island of Daphne Major. Daphne Major serves as an ideal site for research because the finches have few predators or competitors. (The only other finch on the island is the cactus finch.) The major factor influencing survival of the medium ground finch is the weather, and thus the availability of food. The medium ground finch has a stubby beak and eats mostly seeds. Medium ground finches are variable in size and shape, which makes them a good subject for a study of evolution.

The first event that the Grants saw affect the food supply was a drought that occurred in 1977. For 551 days the islands received no rain. Plants withered and finches grew hungry. The tiny seeds the medium ground finches were accustomed to eating grew scarce. Medium ground finches with larger beaks could take advantage of alternate food sources because they could crack open larger seeds. The smaller-beaked birds couldn't do this, so they died of starvation.

In 1978 the Grants returned to Daphne Major to document the effect of the drought on the next generation of medium ground finches. They measured the offspring and compared their beak size to that of the previous (pre-drought) generations. They found the offsprings' beaks to be 3 to 4% larger than their grandparents'. The Grants had documented natural selection in action.

While beak size is clearly related to feeding strategies, it is also related to reproduction. Female finches tend to mate with males that have the same size beaks. These factors together can add to the development of new species.

The Grants return each year to Daphne Major to observe and measure finches. They have been collecting data on the finches for over 25 years and have witnessed natural selection operating in different ways under different circumstances.

state the shape of the bacterium used in the investigation of preventing bacterial growth​

Answers

Answer:

Bacterial cells come in different shapes: from rods, to spheres, to spirals

Explanation:

what is gene flow and how might it impact a wolf population

Answers

Answer:

Gene flow within a population can increase the genetic variation of the population, whereas gene flow between genetically distant populations can reduce the genetic difference between the populations.

Explanation:

Gene flow within the population increases the genetic variability in the wolf population variation can be seen.

What is gene flow?

Gene migration is another name for gene movement. The movement of genetic material from one group to another is referred to as gene flow.

Through migration, gene flow can occur between two populations of the same species and is mediated via vertical gene transmission from parent to offspring and reproduction.

Any movement of people and the genetic material they carry from one community to another is referred to as gene flow, often known as migration.

Therefore the movement of genetic material from one population to another is known as gene flow.

Learn more about genes, here:

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#SPJ2

A cross of a red cow (RR) with a white bull (WW) produces all roan offspring (RW). This type of inheritance is known as:


sex-linked

complete dominance

codominance

incomplete dominance

Answers

Answer:

Codominance

Explanation:

Both parents carry a dominant trait, so the offspring will have a coat of main colour, and also some hairs of another colour.

Please help. This model shows a strand of DNA. Identify how information for specifying the traits of an organism is carried in the DNA.


A)
DNA codes for the sequence of nucleotides in RNA.


B)
The nitrogen bases in DNA code for the sequence of amino acids that make
up a protein


C)
The nitrogen bases in DNA code for the sequence of nucleic acids that
make up a protein.


D)
The sugar molecules found in the backbone of a DNA molecule code for
the RNA nucleotides.

Answers

Answer:B

Explanation: I just did it

Answer:

the answer is B)

Explanation:

DNA is made of nucleotide nitrogen bases, witch turn into Amino Acids, and then finally into protein  

PLSS I WILL GIVE YOU BRAINLYEST!!

Give a written example of a habitat starting at
primary succession and ending up in a climax
community.

Answers

Explanation:

WRITTEN BY

The Editors of Encyclopaedia Britannica

Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....

See Article History

Alternative Title: primary plant succession

Primary succession, type of ecological succession (the evolution of a biological community’s ecological structure) in which plants and animals first colonize a barren, lifeless habitat. Species that arrive first in the newly created environment are called pioneer species, and through their interactions they build a simple initial biological community. This community becomes more complex as new species arrive. Primary succession is distinguished from secondary succession, which is the recovery of an existing biological community after a disturbance sets back the community’s ecological structure to an earlier stage.

Primary succession

Primary succession

Primary succession begins in barren areas, such as on bare rock exposed by a retreating glacier. The first inhabitants are lichens or plants—those that can survive in such an environment. Over hundreds of years these “pioneer species” convert the rock into soil that can support simple plants such as grasses. These grasses further modify the soil, which is then colonized by other types of plants. Each successive stage modifies the habitat by altering the amount of shade and the composition of the soil. The final stage of succession is a climax community, which is a very stable stage that can endure for hundreds of years.

Encyclopædia Britannica, Inc.

Primary succession

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Ecological succession

Pioneer species

Lava-sterilized landscapes, newly formed sand dunes, and rocks either deposited or scoured by retreating glaciers are examples of settings in which primary succession often occurs, because these places either lack soil or their soil cannot sustain life. On newly created volcanic islands, for example, after the rock cools, seeds blown by the wind may lodge in crevices, germinate, and take root. Often these first colonizing plants are weedy species, such as fast-growing grasses and lichens, that do not grow tall but do reproduce quickly. After these plants germinate and grow, they die and decompose, and their remains create pockets of soil in which other plants, as well as fungi, can become established. Over time, such fast-growing vegetation covers more and more of the island, and seeds from other, hardier, taller-growing plants arrive on the wind or are transported by birds that begin to use the island as a stopover during migration.

Surtsey

Surtsey

Surtsey, a volcanic island off the southern coast of Iceland, emerged from the Atlantic Ocean in a fiery eruption in November 1963. Shortly thereafter plants such as sea rocket (Cakile arctica), sand ryegrass (Leymus arenarius), oysterleaf (Mertensia maritima), and seaside sandplant (Honckenya peploides) colonized the island. Much of Surtsey's vegetation is composed of lichens and mosses. However, some higher plants such as the dwarf willow (Salix herbacea) and tea-leaved willow (S. phylicifolia) have grown on the island since the 1990s.

ARCTIC IMAGES/Alamy

These new arrivals shade out sun-loving grasses, shrubs, and other pioneer species, and their cast-off parts decay and add to the soil, altering it by mixing with soil particles left by the decay of earlier plants. More plants and animals arrive (the latter rafting over on flotsam or flying from nearby islands or the mainland), and some become established on the island. The ecosystem changes with each new arrival. Over several decades, the biological community transitions from collections of pioneer and intermediate species to a climax community—that is, a relatively balanced ecological stage whose ecological structure and species composition are far less volatile than those of earlier stages.

The Editors of Encyclopaedia Britannica

This article was most recently revised and updated by John P. Rafferty, Editor.

LEARN MORE in these related Britannica articles:

Weeping willow (Salix babylonica).

plant: Succession and zonation

…plants has long been called primary succession. In this case the succession was in response to...…

energy transfer and heat loss along a food chain

community ecology: Types of succession

Two different types of succession, primary and secondary, have been distinguished. Primary succession...…

ecological disturbance caused by forest fire

ecological disturbance: Disturbance intensity and the pace of recovery

Primary succession occurs in a landscape that previously was devoid of life. For example, following the...…

Color-blindness results from both the expression of a single recessive sex-linked allele (b.)

Which of the following is a genotype of a colorblind male?



XbY

XBXB

XBY

XbXb

Answers

Answer:

XbY

Explanation:

because the question asks genotype of a male, the chromosomes would be XY, so XBX and XbXb can be eliminated leaving only XBY and XbY. XBY is incorrect because the question states that colorblindness is represented by lowercase b, so the correct answer is XbY.

Please HELP!!WILL GIVE BRAAIN!!!

Answers

Answer:

False

Explanation:

Pluripotent stem cells are master cells. They're able to make cells from all three basic body layers, so they can potentially produce any cell or tissue the body needs to repair itself.

Pluripotent stem cells have the ability to undergo self-renewal and to give rise to all cells of the tissues of the body (but not the placenta).

I think the answers false

What happens to food and air when they enter the body?

Answers

Food and liquid pass backward into the esophagus on their way to the stomach. Air passes forward through the larynx and into the trachea, on its way to the lungs. So the lines of travel for air, and for food and liquid, cross over in the oropharynx.

So long ago they used a sundial to tell it. It starts with a “t” if you want me to spell it – what is it?

Answers

Answer: time

Explanation:

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