Al examinar la aleta de un pez primitivo, los científicos encontraron similitudes entre su estructura ósea y la de los reptiles, las aves y los mamíferos modernos. ¿Que tipos de evidencias describe este caso?

Answers

Answer 1

Answer:

evidencia de un antepasado común entre grupos de vertebrados (gnatóstomos)

Explanation:

En el estudio comparativo arriba descripto, se encontraron semejanzas que provienen de un antepasados común. Este tipo de evidencia se conoce como homología, es decir, semejanza entre diferentes grupos de organismos causada por un mismo origen evolutivo. Los gnatóstomos (vertebrados con mandíbula) conforman un grupo de organismos el cual incluye peces óseos, peces cartilaginosos, anfibios, reptiles, aves y mamíferos. En este caso, las extremidades del grupo de los gnatóstomos (las cuales tienen como origen común la aleta de un pez primitivo) son similares porque son estructuras homólogas.


Related Questions

What could the other 98% of DNA be used for?​

Answers

Answer:

It takes just 2 percent of the human genome to code for all of the proteins that make cellular functions -- from producing energy to repairing tissues -- possible.

Which has more genetic information, a body cell or a gamete? Explain your answer

Answers

The body cell has more genetic information. A gamete only has half the information of a body cell. So when two gametes combine (a sperm and an egg), together they provide the child with all the genetic information needed for its body cells.

Hope this helps :)

predict the evolutionary based on their structures

Answers

there isnt a picture

If an accident occurs during a lab, what is the first thing you should do?

A
tell the teacher

B
clean it up

C
yell and scream

D
run away

Answers

tell the teacher duhhhh lol

Answer:

A Tell the teacher

Explanation:

You should tell the teacher because yelling and screaming aren't going to solve it, and you probably wouldn't know how to clean it up the right way, and running away would just cause a bigger problem scaring your other classmates.

Recessive traits appear only when an organism is

Answers

Answer:

If it carries two identical copies of the recessive trait.

Explanation:

The following methods: budding, binary fission, regeneration, and cloning are all ___ reproduction.

A. meiosis
B. Mitosis
C. Variation

Answers

Answer:

Your answer is B) Mitosis.

I need the answer for number 4

Answers

Answer:

chicken wings I believe

I believe it would be butter

When can a species develop genetic diversity?

Answers

Over a long period of time

Answer:

over a long period of time ;)

Explanation:

I know this because another answer said this was the answer and it was answer expert verified... ;)

Determine the correct amino acid for the following codons: (type in all CAPS)
GCA :
AGU:
UAC:
AUG:

Answers

Answer:

1. GCA:arginine

2. AGU:cysteine

3.UAC:Tyrosine

4.AUG:Methionine

The correct amino acids which are encoded by the codons are GCA- Alanine, AGU- Serine, UAC- Tyrosine, and AUG- Methionine.

What is a Codon?

A codon is a specific three nucleotide sequence of nucleotides such as DNA or RNA which are transcribed on an mRNA that corresponds to a specific amino acid or a stop signal during the process of protein translation in the ribosome of cytoplasm.

In the eukaryotic cells, there are 64 codons of four nucleotide are observed, from which 61 codons codes for twenty amino acids whereas three codes for stop codons or termination codons.

The amino acids which are encoded by the following codons include: GCA- Alanine, AGU- Serine, UAC- Tyrosine, AUG- Methionine. AUG also acts as the initiation codon i.e., it is responsible for the initiation of translation in the eukaryotic cell.

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Translating the code below is a dna

Answers

Where’s the DNA code?

I need help on this question

Answers

B I think Srry if I’m wrong

help will give brainlist

Answers

Answer:

Tapeworm and human.

true or false: Plant cells need centrioles in mitosis.

Answers

False. Plant cells are able to reproduce without them.

Which biomolecule is made up of nucleotides?

a. Lipids
b. Carbohydrates
c. Nucleic Acid
d. Proteins

Answers

Nucleic acids

Nucleic acids store and transfer cellular information and transfer energy in all living organisms.

Answer:

c. Nucleic Acid .......

solve this your cool

Answers

Answer:

B. Sunlight

F. Water

Explanation:

Abiotic factors are nonliving components.

Sunlight and water is correct

Polysaccharides are made of?

a. One glucose molecule
b. Many glucose molecules
c. Many fatty acids
d. DNA

Answers

Answer:

b. Many glucose molecules

Explanation:

poly means many

D definetly
Hopefully this helps you
May God bless you

How do some economists refer to natural resources?
O labor
Oland
O capital
O all of the above

Answers

The Answer is All of the above

Based on the cell theory, which of the following is true? (5 points) a All cells perform the same function. b All cells are of the same size and shape. c Organisms can have only one or many cells. d Cells vary in size depending on the size of the organism.

Answers

Answer:

C is the correct one

Explanation:

Answer:

The answer is C. Organsims can have only one many cells.

Explanation:

Hope this is helpful!!

WILL GIVE BRAINLIEST
How does the process of natural selection account for the diversity of organisms that Darwin observed on the Galapagos Islands?

Answers

Answer:

Since each island is very different, birds from each of these islands all have different beaks, colorations, and sizes depending on the natural environmental factors surrounding their island.

Explanation:

I would also add in how birds had to adapt with different beak lengths and sizes in order to be able to get the food type that was most abundant. Natural selection was abundant in this case if one food source (say small seeds) was scarce, a bird with a small beak 1. Had very little if no small seeds to eat and 2. If there were large nuts that required breaking open (ability with birds for larger beaks to do so), the small bird could not break them open and then would unfortunately probably starve to death. Thus, natural selection occured so the birds with the large beaks were able to carry on their traits while the birds with the small beaks did not have as great of an opportunity (if not opportunity) to carry on their traits.

Since each island is very different, birds from each of these islands all have different beaks, colorations, and sizes depending on the natural environmental factors surrounding their island.

Why do candles extinguish when a lid is closed?

Answers

Answer:

fire needs oxygen to burn, when you take that oxygen away by putting a lid on it the fire goes out.

Explanation:

Answer & Explanation:

candles extinguish when a lid is closed because fire needs oxygen to sustain its energy so when the lid is closed no oxygen is coming in, so the candles with the fire slowly extinguish

PLSSS HELP ITS EASY JUST THAT IM D_UMB

Sickle-cell anemia is a recessive trait in humans. In order to express the disease, an affected individual must inherit two recessive alleles (ss). What is the probability that the offspring of two heterozygous parents will also be heterozygous?

a) 0/4
b) 1/4
c) 1/2
d) 3/4

Answers

Answer:

The answer is 1/2 i tried and got it wrong ;-;

Explanation:

Which statement accurately compares archaebacteria and eubacteria?

Both take different shapes and sizes.
Both are always heterotrophs.
Both can sometimes live in extreme environments.
Both are known as "true" bacteria.

Answers

Answer: C - Both can sometimes live in extreme environments.

Explanation: On edge2021.

if wrong sorry but I Think A

Fred went to the doctor because his body was not producing semen. Which part of Fred's body was most likely functioning incorrectly to cause this problem.

Answers

Answer:

The sperm starts in the testicles and move into the epididymis. So it would have to be the testicles.

Explanation:

I hope this helps.

Answer:

The answer is GLANDS

Explanation:

The person above me is WRONG do not use what they think.

Have a good Day and study hard!

According to the diagram below how are metamorphic rocks formed
A. Wastes deposited by plants and animals decompose and weather
B. Other rocks experience intense heat and pressure
C. Sand and other particles are buried,compacted, and cemented together
D. Molten rock cools and turns solid

Answers

When rocks are exposed to extreme temperatures, high pressures, hot mineral-rich fluids, or, more frequently, some mixture of these conditions, metamorphic rocks are created. These kinds of conditions can be obtained deep within the planet or where plate tectonics collide.

What two processes result in metamorphic rocks?

Heat and pressure cause an existing rock to change into a new rock, creating metamorphic rocks. When hot magma hits rock, contact metamorphism takes place. Under the intense heat and pressure produced by tectonic forces, regional metamorphism changes substantial portions of existing rocks.

Most metamorphic rocks are formed where?

The majority of metamorphic rocks are formed underground. Extreme pressure and heat are used to produce them. This includes any procedure where heat, force, or the use of chemical fluids change the structure or makeup of a rock while it is still solid.

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Answer:

B. Other rocks experience intense heat and pressure

Explanation:

I got this same question

what are eukaryotes multicellular makes its own food are called?
A.Protista
B.Plantee
C.Fungi

Answers

Protista I think I’m not sure but I am pretty sur

Answer: B. Plantee

Explanation: Plants are eukaryotic and multicellular. They make their own food using photosynthesis.

A classmate explains that igneous rocks can be changed to metamorphic rock by first being melted into magma and then cooling. What correction needs to be made to this statement?

Answers

Answer:

Cooled magma becomes igneous rock

Explanation:

Took the quiz

Rocks can be created in a variety of ways, such as when sand is crushed or when volcanoes erupt.

What are rocks?

There are three different types of rocks: metamorphic, sedimentary, and igneous. These rocks can all alter. In actuality, any rock may transform into any other kind of rock.

Condensation and cooling: The Earth's interior can experience temperatures hot enough to produce magma. Igneous rock is created as crystals develop in the cooling magma.

If the lava cools gradually, as it does if it stays inside the Earth for an extended period, the crystals enlarge. The crystals will be very tiny if the magma cools quickly. Crystallization is the process by which crystals emerge from magma.

Therefore, Rocks can be created in a variety of ways, such as when sand is crushed or when volcanoes erupt.

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what is a neuron ?
( don't answer this please )​

Answers

Answer: Glia outnumber neurons in some parts of the brain, but neurons are the key players in the brain. Neurons are information messengers. They use electrical impulses and chemical signals to transmit information between different areas of the brain, and between the brain and the rest of the nervous system.

Explanation:

Sorry for answering. i saw an opportunity for 5 points. SORRY!!!!

On Monday afternoon, Arun has keyboard practice session in his school auditorium. He crosses his school playground and enters the cool and dark auditorium. Initially he is unable to see anything. But after sometime he is able to make out the way between the rows of seats. During this time, in his eyes.

Answers

Answer:

The correct answer would be - pupils expand or become bigger so more light can enter the eyes.

Explanation:

When Arun crosses the playground he was in a warm and sunny condition where light is more than required so the pupil becomes small in an excess light condition.

So, that less light can enter the eyes and when he enters into a dark auditorium then less light enters in his eye and he can't see a thing and pupil expands and more light enters the eye enabling to see and able to make out the way between the rows of seats

Name some specialized features that plants have that are used for reproduction. Please help!!

Answers

pollen and asexual reproduction are two :)

Why do we cook our food?

Answers

Answer:

The way we cook our food is as important as the way we prepare and store it. Inadequate cooking is a common cause of food poisoning. ... Most foods, especially meat, poultry, fish and eggs, should be cooked thoroughly to kill most types of food poisoning bacteria.

mark me as a brainliest

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