Cave-dwelling catfish and cave-dwelling earthworms both lack pigmentation and their eyes are reduced or absent. The most recent common ancestor to these organisms had normal pigmentation and fully developed eyes. The similarities between cave catfish and cave earthworms are an example of

Answers

Answer 1

Answer:

Analogy

Explanation:

Cave catfish and cave earthworms can be said to have analogous traits, which have over the years developed separately and have different ancestral origins. This new analogous trait is as a result of the need for both organisms in their different environments, which seem similar in condition, to adapt well.

Through convergent evolution analogous structures and traits are usually formed or observed in organisms that do not share the same ancestral origin.


Related Questions

Tiny structures that carry out cell functions are collectively called:

Answers

Answer:

YOUR ANSWER IS ORGANELLES .

THEY CARRY DIFFERENT FUNCTION INSIDE A CELL.

HOPE IT HELPS

The tiny structures that carry out various functions in a cell are collectively called organelles.

Organelles are microscopic in nature. Just like we have various organ parts in the human body that performs several body functions, so also do we have various organelles in a cell that carry out specific functions within a cell.

Organelles which can be referred to as "little organs" include the following: mitochondrion, nucleus, lysosomes, ribosomes, chloroplasts and so on.

Thus, all these tiny structures listed above which carry out cell functions are collectively called organelles.

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The thin external covering is similar to the
. The organelle with a texture like sandpaper is the
.

Answers

Answer:

The thin external covering is similar to the Cell Membrane. The organelle with a texture like sandpaper is the rough endoplasmic reticulum (ER)

Pillbugs are placed in a container where they have a choice of a wet or a dry environment. Researchers record how much time was spent on each side. What is the INDEPENDENT variable?

Answers

Answer: Wet or dry environment.

Explanation:

The independent variable is the variable that a researcher manipulates in an experiment in order to carry out a study on the incidence of the expression of the dependent variable. Therefore, the independent variable is the one that changes or is controlled to see its effects on the dependent variable.

Researchers can then design a container with a wet or dry environment. But it's the pillbugs that are going to choose where to go and how long to spend in each part. So the time they spend in each part is a dependent variable since that cannot be controlled by the scientists conducting the experiment. Henceforth, the researches will just record this dependent variable without controlling it. But they can decide what to put in the container to make it wet or dry environment, or whatever they want to design. So wet or dry environment is the independent variable.

Answer:the independent variable is whether the pillbugs choose a wet or dry environment. The dependent variable how much time was spent on each side.

Explanation:

Why do frogs have triangular heads?
Plz help me with this question!!​

Answers

Answer:

Aquatic frogs tend to have long, flat skulls, while digging species often have short skulls with pointed snouts, a shape that also enables them to use their mouths like chopsticks to catch small, scurrying prey such as ants and termites.

Explanation:

Which of these questions can be answered using science? Is human travel beyond our solar system possible? Should the use of green energy be increased? What is the best vacation spot? Which is the best online store?

Answers

Answer:

"Is human travel beyond our solar system possible?" can be answered using science.

Explanation:

I just took the test.

Hope this helps! - J

The question that can be answered by science is "Is human travel beyond our solar system possible". Thus, the correct option for this question is A.

What is Science?

Science may be defined as a branch of scientific study that involves the application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence.

It can broadly be classified into three categories such as Physics, Chemistry, and biology. Each sub-classification illustrates its own field of detailed study.

Science always deals with the concept of nature as well as natural phenomena. So, among the given options, the solar system is an important component of it.

The answer to this question is little bit complex but definitely the answer should be determined with the help of science only.

Therefore, the question that can be answered by science is "Is human travel beyond our solar system possible."

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8
9
The ability of an organism to change internally or externally in relation to changes in the environment is called
complexity
heredity
o homeostasis
reproduction
NEXT QUESTION
ASK FOR HELP

Answers

Answer:

Homeostasis would be the answer out of those choices.

Explanation:

This is because they are adapting to their environment to ensure that their normal internal state is maintained.

Please help me, I don't understand this

Answers

Answer:

4, based on the assumption that the R allele is dominant over the r allele, and that the T allele is dominant over the t allele.

Explanation:

Any bush with a dominant petal color allele (R) will have red petals. This includes Rr and RR.

Any bush with a dominant bush size allele (T) will have a tall bush. This includes Tt and TT.

The only way to acquire a short bush or pink petals is to have two recessive alleles together (tt, rr).

RRTT, RrTT, RRTt, and RrTt -> red petals with tall bushes

RRtt, Rrtt -> Red petals with short bushes

rrTt, rrTT -> pink petals and tall bushes

rrtt-> pink petals with short bushes.

These are the four phenotype variations possible in this dihybrid cross.

Which of the following are sensory organs in the human body?

Ears, nose, and heart
Eyes, ears, and nose
Nose, skin, and liver
Skin, tongue, and bladder

Answers

Which of the following are sensory organs in the human body?

Choose: Eyes, ears, and nose

Find the weight of a pine tree that has a circumference of 14 inches and a height of 120 feet. Use the equation: W = b0 + b1(D2H)

Answers

Answer:

The answer is below

Explanation:

The weight of trees is calculated using the equation:

[tex]W=b_o+b_1(D^2H)[/tex]

W is the tree weight in tons, D is the diameter of the tree in inches, H is the height of the tree in feet and [tex]b_o \ and\ b_1[/tex] are constants.

The circumference is given by:

Circumference = 2πr

Where r is the radius and 2r is the diameter

Therefore:

14 = 2(22/7)× r

14 = (22/7)×2r

2r= 14 × 7 / 22

Diameter = 2r = 4.455 inches

[tex]W=b_o+b_1(4.45^2*120)\\W = b_o+2381.643b_1\\Let\ us\ assume\ b_o = -35,b_1=1.9.\\Therefore\\W = -35+2381.643(1.9)\\W=4490 \ tons[/tex]

Which of the following terms is the life
cycle of a living cell?
A. g1
B. cell cycle
C. interphase
D. mitosis

Answers

Answer:

cell cycle is the term of the life cycle of a living cell

What is desertification?
a.
method of using desert land for agriculture
b.
the process of turning arable land into deserts
C.
drying up of stream beds and lakes
d.
the expansion of current deserts land areas

Answers

Answer:

B

Explanation:

I believe it's B because desertification is the process of land being turned into deserts due to many factors like animal grazing.

Desertification means the process of turning arable land into deserts, which is the second option. Desertification is a process in which agricultural land is affected the most, resulting in the land having fewer nutrients.

What is desertification?

Desertification is a process in which arable land is affected, and as a result, crop production is reduced. Desertification is the result of many factors, such as climate change, rapid urbanization, population growth, global warming, etc. The less water, nutrients, and microbes there are in the soil, the more likely it is that the land will become a desert.

Microbes in the soil become extinct as a result of climate change, causing crop patterns to shift and more land to become desert. Global warming causes temperatures to rise and many species to become extinct, exacerbating the problem.

Hence, desertification means the process of turning arable land into deserts, which is the second option (b).

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3. Which plants are usually the first to grow during secondary succession?
A ferns
Blichens
Cweeds
D trees

Answers

Answer:

ferns

Explanation:

these are alsi known as conifers which require a great amount if light

Im not a science student just trying beans I guess

1. A government is

.when people who own their own businesses and property
.Institution through which a society makes and enforces public policies
.Institution who elects representatives
who provides goods and services that are bought, sold and used​

Answers

The correct answer is B. Institution through which a society makes and enforces public policies

Explanation:

The government is one of the most important institutions in society. The main function of this institution is to define who holds the political power, how are laws and policies created, how is a nation protected, and how to maintain the general order by enforcing laws and politics. Moreover, there are different types of government depending on who has the power and makes political decisions, this includes democracy, monarchy, aristocracy, etc. In this context, the option that best describes the government is B.

what is epicultural?

Answers

Answer:

Explanation:

                          Beekeeping is the maintenance of bee colonies, commonly in man-made hives, by humans.

technical term for beekeeping

Determine whether the statement is true or false, and why. "Bacteria
reproduce sexually through plasmids and increase genetic diversity through
Binary Fission"
A. False, "Bacteria reproduce sexually through Binary Fission and increase genetic
diversity through Plasmids."
o
B. False, "Bacteria reproduce asexually through plasmids and increase genetic diversity
through Binary Fission."
C. False, "Bacteria reproduce asexually through Binary Fission and increase genetic
diversity through plasmids."
D. True

Answers

Answer:

A.

please let me know how helpful is it

why must the composition of the dialysis fluid be similar to that of the blood​

Answers

Answer:

Because the purpose of dialysis is to mimic blood and clean the blood  because the persons kidneys dont work. If it is not similar to blood it wont work

Explanation:

Human Bones
Name three components of bones and describe
their function.

Answers

Answer: 1st the periostneum which is the outside of the bone and a thin but dense layer that has nerves and blood vessels

2nd compact bone. It is very smooth and very hard

3rd and lastly Cancellous, this looks a little like a sponge but much harder.

Explanation:

Answer:

The periosteum is a thin, dense membrane that contains nerves and blood vessels that nourish the bone.

Compact bone is smooth and dense. It is the hard part of the bone.

Cancellous bone looks like a sponge and protects the bone marrow.

Bone marrow is a thick jelly that makes blood cells.

Explanation:

These are the check offs for edge 2021

Why is the alpine tundra important to protect

Answers

Answer: the tundra is important to protect is that it serves as a habitat for migratory populations, like waterfowl, shorebirds, caribou and several bear species. It is home to endangered animals such as the Arctic Fox, Polar Bear, Grizzly Bear, Caribou, and Musk Ox.

Explanation:

Predict which of the following can impact an ecosystem's available resources?

Answers

Answer:Long term drought, change of season from winter to summer, forest fire are unfavorable environmental factors which can deplete the amount of resources already available with the ecosystem. The long term drought will be a condition in which the ecosystem will suffer from non-availability of water.

Explanation:

During which stage of cellular respiration is glucose broken down into two molecules of pyruvic acid?

Answers

Answer: Glycolsis

Glycolysis happens in the cytoplasm of the cell. Afterwards, in the presence of Oxygen, the two molecules will undergo pyruvate oxidation in the mitochondrial matrix.

A microbiologist is characterizing a newly discovered microorganism that requires an anaerobic environment to live and uses either lactic acid or alcoholic fermentation in its energy metabolism. Which would be a way to determine the type of fermentation the microorganism uses

Answers

Answer:

The correct answer is - Analyze whether one molecule of CO2 is released for every one molecule of glucose fermented

Explanation:

Fermentation can be described as the process that breaks down the glucose-like molecules in absence of oxygen or anaerobically. There are different types of fermentation depending on the items they produce in used those products. The three types of fermentation are Lactic acid fermentation, alcoholic fermentation, and acetic acid fermentation.

One can determine the type of fermentation by analyzing the products they produced and the amount of carbon dioxide they produce for every one molecule of glucose fermented as lactic acid fermentation do not produce carbon dioxide whereas alcoholic fermentation produces two moles of CO2 per mole of glucose.

what are the different experiments and variables you can use to test your hypothesis

Answers

Answer:

the most common variables found in a science experiment include dependent, independent, and controlled.

Explanation:

Galactosemia is an inherited genetic condition. Children with this condition cannot break down the sugar galactose, which is part of lactose. Based on the pedigree chart, is this condition a dominant or a recessive disorder? Explain your reasoning.

Answers

Answer:

Recessive.

Explanation:

Galactosemia is an autosomal recessive genetic disorder. Recessive genetic disorders occur when an individual inherits a non-working gene from each parent.

There is no chart attached, so the reasoning is just common scientific knowledge. Please attach the chart so I can properly answer the question!

Answer:

It is recessive. Both parents are heterozygous for the trait, but they do not exhibit the disease themselves. If it were a dominant gene, both parents would have the disease if they carried the gene for it.

Explanation:

This is the answer on edmentum! Thanks!

What has a greater influence on protein levels? A. Protein degradation has a greater influence because they are denatured faster than the cell can produce them B. mRNA destroyer concentration has a greater influence because it is destroying mRNA before proteins can even be produced C. mRNA destroyer concentration has a greater influence because mRNA is destroyed right after the proteins are produced D. Protein degradation has a greater influence because outside factors like antibiotics can cause it, and it is difficult to recover from

Answers

Answer: b

Explanation: i got the answer wrong and i’m looking at the results rn

Protein is being produced with the help of a process called translation in which mRNA gets translated to produce proteins. The translation is followed after the process of transcription of DNA to RNA.

The cause of the greater influence of protein levels has defined as follows:

The destruction of mRNA could greatly influence protein levels as mRNA is considered the source for proteins to get synthesized. This is because if mRNA gets destroyed, proteins would not have been produced at all. Thus, directly influences the levels of protein.

Thus, we can conclude that mRNA destroyer concentration has a greater influence because it is destroying mRNA before proteins can even be produced. Hence, option (b) is the correct answer.

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which of the following group is incorrectly paired with an example of that group

Answers

Explanation:

I can't see which following group you are telling

What adaptation do seeds dispersed through ballistochory have?
a)

sail-like structure

b)

smooth and aerodynamic

c)

hollow on the inside

d)

pleasant smell and taste

Answers

Answer:

smooth and aerodynamic

Explanation:

Seeds are usually smooth, like a baseball, so that they cut smoothly through the air and don't have a lot of wind resistance.

The adaptation that seeds dispersed through ballistochory has smooth and aerodynamic. The correct option is b.

What are adaptations?

Adaptation is a biological process that is done by many plants and animals to survive in given conditions. Adaptation is causing the partial or full change in their body or functions to match with the environmental conditions.

Plants with ballistochory means possibly ejects by the seeds full stop this adaptation or evolution happened in which seats are dispersed into many tentacles and seats are dispersed into soils for pollination this comes under wind dispersion.

Seeds launch an angle and release the elastic energy store in the fruit. These adaptations are smooth.

Therefore, the correct option is b. smooth and aerodynamic

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what is cardiovascular arrest...?
explain...?

Answers

Answer:

Cardiac arrest is the abrupt loss of heart function in a person who may or may not have been diagnosed with heart disease. It can come on suddenly, or in the wake of other symptoms. Cardiac arrest is often fatal, if appropriate steps aren’t taken immediately.

Each year in the United States, more than 350,000 cardiac arrests occur outside of a hospital setting.

These two distinct heart conditions are linked. Sudden cardiac arrest can occur after a heart attack, or during recovery.  Heart attacks increase the risk for sudden cardiac arrest. Most heart attacks do not lead to sudden cardiac arrest. But when sudden cardiac arrest occurs, heart attack is a common cause. Other heart conditions may also disrupt the heart’s rhythm and lead to sudden cardiac arrest. These include a thickened heart muscle (cardiomyopathy), heart failure, arrhythmias, particularly ventricular fibrillation, and long Q-T syndrome.

Cardiac arrest is reversible in most victims if it's treated within a few minutes. First, call 911 for emergency medical services. Then get an automated external defibrillator if one is available and use it as soon as it arrives. Begin CPR immediately and continue until professional emergency medical services arrive. If two people are available to help, one should begin CPR immediately while the other calls 911 and finds an AED.

Sudden cardiac arrest is a leading cause of death – over 320,000 out-of-hospital cardiac arrests occur annually in the United States. By performing Hands-Only CPR to the beat of the classic disco song “Stayin’ Alive,” you can double or even triple a victim’s chance of survival.

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Which color of light does chlorophyll b absorb more of than any other color?

Answers

Answer:

Blue and Red

Explanation:

The highest spike of chlorophyll B on this graph is between 400 and 500nm, making it a shade of blue. The second spike is between 600 and 700nm, making it a shade of orange-red.

the answer is blue\///////

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Which of the following statements can you infer would happen If one organ system stopped working?
a. The other organ systems would have to work harder to make up for the broken system
b. The other organ systems would stop working too.
c. The other organ systems would still work on their own but might have to work harder to complete their function correctly.

Answers

Answer:

b

Explanation:

After one system shuts down, the others would slowly start to shut down as well until the body can no longer maintain homeostasis and the person would slowly die. 3. All systems would be working together but the main ones would be muscular, nervous, and skeletal.

Consider this animal cell. The organelles in an animal cell are labeled. Part E represents small dots on the nucleolus. What is the function of the small, dark organelles labeled E? They contain enzymes for the digestion of old cell parts. They regulate what enters and leaves the cell. They produce proteins for the cell. They store water and other materials.

Answers

The dark organelles labelled E is called the Ribosomes.

Answer:

C

Explanation:

Edge 2020

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