100 POINTS
I am asking 2 questions because im giving so many points...

1. Describe the first hypothesis that scientists have about blindness in the Mexican tetra. Be sure to discuss pleiotropy in your answer.\

2. One effect of the Hedgehog gene is to make cave tetras go blind. What is another effect it might have?

Answers

Answer 1

Answer:

these are odd questions....

Explanation:

1. they are curious about how they get blind

2. the quills

Answer 2

Answer:

1.The first hypothesis is that blindness gives the tetra some sort of evolutionary advantage. That advantage might be the result of pleiotropy, which is when multiple effects are caused by the same mutation in one gene. Scientists think that the mutation that causes blindness in the tetra might also cause a "seemingly unrelated change in the fish that is beneficial."

2. Another effect it might have is to improve cave tetras' sense of smell.

Explanation:

i said so


Related Questions

Which of the following best predicts and justifies how the proportion of the Tibetan population with big blood vessels living in the mountains will change over the next 1,000 years (assuming conditions remain stable)?

Question 2 options:

I predict that the proportion of individuals with big blood vessels living in the mountains will decrease because there is a variation in blood vessel size and those with the smaller blood vessels can store more red blood cells than larger vessels, so more oxygen can be moved to the body cells. Therefore, they have a better chance of surviving and passing this trait on to their offspring.


I predict that the proportion of individuals with big blood vessels living in the mountains will stay the same because there is a variation in blood vessel size and that variation will remain in a population. The is what is so cool about humans, we are all so unique.


I predict that the proportion of individuals with big blood vessels living in the mountains will increase because there is a variation in blood vessel size and those with the bigger blood vessels can deliver more oxygen to the body cells and therefore have a better chance of surviving and passing this trait on to their offspring.


I predict that over 1,000 years, the proportion of individuals with big blood vessels living in the mountains will not change because a change can’t happen to an individual, an individual can only increase the amount of red blood cells it makes, not its blood vessels.

Answers

Answer:

Over 1,000 years, the proportion of individuals with big blood vessels living in the mountains will not change because a change can’t happen to an individual, an individual can only increase the number of red blood cells it makes, not its blood vessels.

Explanation:

Evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection

What is blood vessels?

The blood vessels are the components of the circulatory system that transport blood throughout the human body.

I predict that over 1,000 years, the proportion of individuals with big blood vessels living in the mountains will not change because a change can’t happen to an individual, an individual can only increase the amount of red blood cells it makes, not its blood vessels.

Hence, option D is correct.

Learn more about blood vessels here:

https://brainly.com/question/4601677

#SPJ2

1. In the diagram, the arrow #9 is pointing to an organelle called





mitochondria
nucleus
smooth endoplasmic recticulum
endoplasmic recticulum

Answers

Answer:

Mitochondria

Explanation:

Why does Mr. Evil think that he will be able to tunnel from Snivley's grandmother's house to the Daily City back at some point in the future?

Answers

Answer:

Mr. Evil, thinks that he will be able to tunnel from Snively's grandmother's house to Daly City bank because when the plate slides (the one that has Snively's grandmother's house) close enough to the bank; he will be able to dig a tunnel into the bank.

how would uranus not be classified as a dwarf planet and what i mean by that is there anything that could happen that would just make it a dwarf planet

Answers

Answer:

Uranus Could Not Be Considered A Dwarf Planet Unless..

Explanation:

I don't understand your problem that well. However dwarf planets have to file these three criteria.

1. Orbits the sun,

2. Has enough mass to assume a nearly round shape,

3. Has not cleared the neighborhood around its orbit and is not a moon.

The unicellular organism sulphur bacterium is autotrophic, lives in a sulphur lake and is asexual. Can you describe its behaviours and features and classify it in the correct domain?

Answers

Answer:

bacteria

Explanation1 Bacteria. 2 Protists. Lab Comparing Algae and. Protozoans. 3 Fungi ... ways, and they can describe some of the internal structures of organisms related to ... Structure and Function Bacteria cells are ... Most eubacteria have been classified and identified based ... their lives as one-celled organisms and part of their lives as.

Missing: behaviours ‎| Must inclu:

All living things contain biomass. Which element is the most important when creating
biomass?
a.Carbon
b.Nitrogen
c.Oxygen

Answers

Answer:

Carbon is the most important.

Explanation:

It's the main component

Yeah it is A. carbon

Suggest reasons for the color patterns of the frog and its lack of color on the ventral surface.

Answers

Answer:

To save itself.

Explanation:

The color patterns of the frog and its lack of color on the ventral surface allows the frog to protect itself from their predators because the frog changes its colour and the predators are unable to see them. The color patterns of frogs and their lack of color on the ventral surface allow frogs to escape from their predators. If the frog does not change its colour, the predators will see them and the frog will be catch by its predators and feed on them so this is the reason that frog changes colour or the presence of colour patterns.

List earth's layers from hottest to coldest.

Answers

Answer:

inner core, outer core, mantle, crust

Explanation:

inner core is hottest

crust is coldest

Answer:

Inner core, outer core, mantle, crust!

Match the vocabulary term to the correct definition

HELP WILL MARK BRAINLIST answer IF U DO IT THE RIGHT WAY
WORTH 50% of GRADE HELP!!

Earth or the moon gets in the way of the
sun's light


Moon moves through Earth's shadow


Moon passes directly between the Sun
and Earth, preventing sunlight from
reaching Earth

Light from the Sun is partially blocked by
the Earth

Light from the Sun is completely blocked
by the Earth

Answers

Answer:

1 B

2 D

3 A

4 E

5 C

What of matter are always moving

True
Or
False

Answers

Answer: True?

Explanation: The wording of the question is confusing?

The bones of the skull,spine,and rib cage make up the______ _______ _______

Answers

Answer:

The axial skeleton is composed of the bones of the skull, ossicles of the ear, hyoid bone, vertebral column, and ribcage.

Explanation:

brainliest

Answer:

The axial skeleton.

The skeletal system of the human body is furthermore subdivided into two distinct types, the axial and appendicular skeleton.

The axial skeleton is located almost the midportion of the human body which has 80 constituent bones and has 6 parts; the skull, the ossicles of the ear (tiny bones), sternum, rib cage, vertebral column and hyoid bone.

Explanation:

brainliest pls and thx btw!

As the masses of two objects increases, the force of gravity between them_____.

Answers

Answer:

Increases

Explanation:

As the mass of either object increases, the force of gravitational attraction between them also increases.

where is the sun located?

Answers

Answer:

A. The sun is the center of our solar system

Explanation:

Which of the following is an example of a producer-consumer
relationship?
productor?
Worm --> Bird
Leaf --> Tree
Fish --> Bear
Grass --> Deer

Answers

Answer:

Grass and Deer

Because Grass is consumer and Deer is producer

A doctor examines a patient who has high blood pressure and atherosclerosis in the coronary artery. What medical condition connected to blood flow is most likely to affect this patient in the future?

A. The patient may develop headaches and confusion due to cancer in the brain caused by years of low levels of oxygen supplied to the brain.

B. The patient may develop stiff joints and chest pains from the high blood pressure applied to the muscle and joint tissues of the body.

C. The patient may show signs of confusion, weakness, and partial paralysis due to high blood pressure when the plaque dislodges and blocks blood flow to the brain.

D. The patient may suffer a heart attack because of the reduction in blood flow to the muscles due to severe plaque build-up in the coronary artery.

Explain why this is the correct answer and why the other ones are wrong:

Answers

The patient may suffer a heart attack because of the reduction in blood flow to the heart muscles due to severe plaque build-up in the coronary artery.

Worth 32 points! Look in the picture

Help me right now! I need the answer in an paragraph please and I will make you brainlest!

NO WEBSITES or links or you will be reported. And don’t answer just to get points or you will be reported.

Answers

Carbon dioxide is made of 1 carbon atom, and 2 oxygen atoms. If you were to take ONE oxygen atom away, the substance would be called CARBON MONOXIDE. Without that 1 oxygen atom, it would no longer be considered carbon dioxide.

(please give me brainliest) :)

Texto donde se desarrolle la definicion de seleccion natural. Además, empleem los siguientes terminos: Variabilidad, mecanismo selectivo y Darwin.

Answers

Answer:

la selección natural es el mecanismo principal por el cual la evolución ocurre

Explanation:

Charles Darwin fue un naturalista inglés que propuso la teoría de la evolución o 'descendencia con modificación' mediante el mecanismo de selección natural. Acorde a esta teoría, la selección natural se define como el mecanismo selectivo de reproducción diferencial de los individuos mejor adaptados a su ambiente. La variabilidad es el la materia prima sobre la cual la selección natural actúa, seleccionado aquellos individuos que presentan combinaciones fenotípicas y genotípicas más adaptadas para sobrevivir en un ambiente en particular. Los individuos de una población que son 'superiores adaptativamente' poseen más chances de sobrevivir y reproducirse, y por lo tanto tienen también más probabilidades de transmitir sus genes a la siguiente generación.

what would happen if you gave your dog a tiny piece of chocolate?

Answers

I depends of how much chocolate you give them. If you give them a lot they can get sick and even die. If you give it a little it can get sick or just go on about their day

Abiotic factors are the __________ things in an environment.

Answers

Answer:

non-living

Explanation:

The bone cell of a goat contains 60 chromosomes.How many chromosomes will be in each daughter cell after mitosis

Answers

Since these are not game țes, the chromosomes will be in the same number:60

The bone cell of a goat contains 60 chromosomes, so there will be 60 chromosomes in each daughter cell after mitosis, as mitosis is the cell division that will produce daughter cells with the same genetic contents.

What exactly is mitotic cell division?

The cell divides during mitosis, and the daughter cells formed have the same genetic content as the parents, here, two daughter cells are formed, with the bone cell having genetic content same as original bone cell. Because the duplicated chromosomes are separated equally by the spindle fibers without crossing over or recombination, 60 chromosomes will form that is the same number of chromosomes after mitosis.

Hence, the bone cell of a goat contains 60 chromosomes, so there will be 60 chromosomes in each daughter cell after mitosis, as mitosis is the cell division that will produce daughter cells with the same genetic contents.

Learn more about mitotic cell division here.

https://brainly.com/question/29776367

#SPJ5

Why do the chromosomes line up in the middle of the cell

Answers

Answer:

QUESTION:

Why do the chromosomes line up in the middle of the cell?

ANSWER:

Chromosomes line up at the metaphase plate, under tension from the mitotic spindle. The two sister chromatids of each chromosome are captured by microtubules from opposite spindle poles. In metaphase, the spindle has captured all the chromosomes and lined them up at the middle of the cell, ready to divide.

Explanation:

Hope that this helps you out! :)

Have a great rest of your day/night!

Answer:

Chromosomes line up at the metaphase plate, under tension from the mitotic spindle. The two sister chromatids of each chromosome are captured by microtubules from opposite spindle poles. In metaphase, the spindle has captured all the chromosomes and lined them up at the middle of the cell, ready to divide.

hope this helps

have a good day :)

Explanation:

Pollen and Ovules are gametes. How many chromosomes would they have compared to the rest of the plant's body cells? What process made them that way?

Answers

Answer:

a. They would have half chromosomes as much as the plants body cells.

b. Meiosis

Explanation:

Gametes are sex cells produced only in sexually reproducing organisms. In plants as stated in this question, male gametes are contained in pollens while female gametes are contained in ovules. The process by which these gametes are made is called MEIOSIS.

Meiosis is a cell division that reduces the chromosomal number of the parent cell by half. This means that each GAMETE will contain half the number of chromosomes as the parent cell. Fir example, if the body cell of a plant contains 30 chromosomes, each gamete formed via Meiosis in that plant will have 15 chromosomes.

In a nutshell, pollen and ovules, which are gametes of plants formed by MEIOSIS would have half chromosomes as much as the plants body cells.

Someone please help me !

Answers

Answer:

A

Explanation:

A becouse planets do move and the sun move around eachother.

How about decreasing the amount of water in blood affect blood pressure

Answers

Answer:

When you're very dehydrated, your blood volume can decrease, leading to a drop in blood pressure. When blood pressure drops too low, your organs won't receive the oxygen and nutrients they need. You could potentially go into shock.

Summarize how atmospheric pollution affects living organisms and the environment by completing the chart below:

Answers

Answer:

when accur pollution is affect all living things include all living things

Explanation:

when happened atmospheric pollution the all life cycle is end even soil property

Pls I need help thank you. And pls don’t send me a link.

Answers

The answer would be the first one :)

Why do we use pH and the pH scale?

Answers

Answer:

We use pH as a measurement of how acidic something is. pH scale is what we use to determine how acidic it is. i tried hope it helps:)

Explanation:

Our atmosphere is composed of several gases. The name of the gas we breathe, O2, is A) oxygen squared B) monoxide. C) oxide. D) diatomic oxygen.

Answers

A. Oxygen Is the most abundant

Examine the graph showing a comparison of transportation and emissions trends in the United States over the years 1980-2015.
Which statement best describes the trend for the six common pollutants, as shown in the graph?
A)
B)
The Clean Water Act addressed the six major pollutants that were
damaging the ecosystems.
The decline in vehicle miles traveled and US population correlates with a
drop in air pollution
The 1990 amendments to the Clean Air Act addressed the sources of acid
rain, smog, and toxic air pollutants.
A conversion to 100% renewable resources for energy harnessing and
electricity production caused a reduction in air pollution.
C)
D)

Answers

The sixth answer seems best

Wheat, barely ,oats and rice are examples of what type of crop ?​

Answers

Answer:

Cereal crops

Explanation:

Answer:

Cereal crops

Explanation:

hope it helps :)

Other Questions
Decide whether to use the imperfect or the preterite form of the verb in the blanks below.Anoche (estar) ________ cuando mi hermano (caerse) ________. El (llorar) _______ mucho porque (quebrarse) ________ la mano. Mi mam (gritar)______ y yo (correr)______ por toda la case sin saber que hacer. Mi pap nos (llevar)_______ al hospital para que curaran a mi hermano. En el hospital yo (dormir)______ por horas mientras esperbamos. Toda mi familia (llegar)_______ para visitar a mi hermano. Mis abuelos (ir) _________ a la cafetera y (comprar)______ muchos dulces para nosotros. Al final yo tambin (enfermarse) ______ del estmago. How does this division continue to influence American culture even today? During the Scientific Revolution, what did scientists rely upon to make discoveries? How would you label the molecules shown in the sample above? ( A is wrong ) a. Sample A is cooler. Sample B is hotter.b. Sample A is hotter. Sample B is cooler.c. Samples A and B are the same temperature. Bombeck Inc. has the following transactions during August of the current year. Indicate (a) the effect on the accounting equation and (b) the debit-credit analysis. Aug. 1 Opens an office as a financial advisor, investing $5,000 in cash in exchange for common stock. 4 Pays insurance in advance for 6 months, $1,800 cash. 16 Receives $1,900 from clients for services performed. 27 Pays secretary $1,000 salary. Find the perimeter. Need help!Thanks, NO LINKS. I will give brainiest please answer and explain nummber 3 Can someone help me please does anyone know about the case Brown versus the Board of Education If you do please tell me what is one thing that she didn't understand about that case PLEASE HELP!! i will love you forever omgwrite a short scene, in first person showing a time you were underestimated. What is the equation of the line that passes through the point ( 0.5 , 8 ) and has a slope of 5 write in slope-intercept form the equation of a line having slope -8 and Y-intercept -2 If the area of a rectangular pool is represented by (12xx)-17x-5, the length could be represented by ... A.(3x+1) B.(3x+5) C.(4x-5) D.(4x+1) Leon made cookies. He used 7/10 of a cup of flour and 1/2 of a cup of sugar. Q. How muchmore flour than sugar did Leon use? relate degree of dissociation to strength of acid and base If a period contains many fossils of species that previously weren't found, what type of event most likely took place on Earth?Question 17 options:Natural selectionPopulation equilibriumPunctuated evolutionMass extinction HELP ME PLS I WILL GIVE 25 POINTS!! could i get some helpp with oneee Where would you find a tropical maritime air mass? ill award brainliest! no links Given ABC is congruent to XYZ. If AC = 10, determine the length of YZ.