Answer:
no, la selección natural opera sobre los fenotipos seleccionando aquellos que mejor se adaptan a su medio ambiente. En consecuencia, el medio ambiente actúa como agente selectivo pero no es el disparador de los cambios fenotípicos/anatómicos
Explanation:
Jean-Baptiste de Lamarck fue un naturalista francés el cual propuso que los individuos se adaptaban para sobrevivir a su ambiente, y que estos cambios fenotípicos/anatómicos eran transmitidos a la progenie. Por otra parte, Darwin propuso la teoría de la evolución por selección natural la cual establece que aquellos individuos mejor adaptados a su ambiente tiene más chance de sobrevivir y reproducirse, y con lo cual también tienen más chances de trasmitir sus rasgos anatómicos/fenotípicos a la siguiente generación. Hoy en día, la teoría de la evolución de Darwin es ampliamente aceptada por la comunidad científica y permite explicar la variación existente entre individuos. De este modo, de acuerdo a la pregunta planteada, las diferencias anatómicas/fenotípicas entre los individuos de la humanidad no surgieron como respuesta al acondicionamiento ambiental: el ambiente funciona como agente selectivo, seleccionado aquellos individuos mejor adaptados a sobrevivir en cada ambiente en particular.
n 2000, Bob Harmon discovered the best-preserved Tyrannosaurus rex skeleton ever found. The fossilized dinosaur was sticking out of the wall of a canyon in Montana. Many scientists were eager to study the fossils.
Dr. Mary Schweitzer got one of the leg bones to analyze. Dr. Schweitzer’s assistant dissolved the bones in acid and discovered that some soft tissue had survived even after 68 million years. The discovery was a shock to the scientific community. No one had ever found such old tissues.
Before laying eggs, female birds store calcium inside their bones that they will need to make eggshells. This layer of bone is called medullary bone. In the T. rex leg bone, Dr. Schweitzer found tissue just like the medullary bone of birds. The dinosaur was a female! If Dr. Schweitzer’s hypothesis is right, she is the first scientist to identify the sex of a T. rex. Which organ system includes the bones?
A. skeletal system
B. muscular system
C. reproductive system
D. integumentary system
Bob Harmon discovered the best-preserved Tyrannosaurus rex skeleton ever found and is the first scientist to identify the gender of a T. rex, the organ system is the skeletal system, as it includes the bones that are present in Option A.
What is the significance of the skeletal system?The skeletal system, which provides structural support, is important for animals as it protects vital organs, supports muscles, and helps in movement. Also, the bones synthesize the blood cells, such as the red blood cells, which carry nutrients and oxygen, it also maintains the individual's balance and posture and provides a veil over the fossil records.
Hence, Bob Harmon discovered the best-preserved Tyrannosaurus rex skeleton ever found and is the first scientist to identify the gender of a T. rex, the organ system is the skeletal system, as it includes the bones that are present in Option A.
Learn more about the skeletal system here.
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Question 9
O Mark this question
Being left-handed (represented as I) is a recessive trait. Jim and Suzie are both left-handed.
If they have a child, which of the following could be his/her genotype?
O LL
O Either Ll or II
OLI
II
SAVE AND CONTINUE
The correct option is (2) either LI or II .
The term genotype refers to the genetic component of a trait.
The phenotype is the genotype's visible manifestation.Due to the fact that an existing DNA strand is used to make a new strand, DNA replication is known as semiconservative.What does the term genotype mean?The type of variant present at a specific locus (i.e., region) in the genome is scored by what is known as a genotype. Symbols can be used to symbolize it.There are three different genotype types: hetrozygous, homozygous recessive, and homozygous dominant.Learn more about genotype brainly.com/question/20730322#SPJ2
Which is the most likely explanation for the presence of 13 different finch species on the
Galápagos Islands today?
Answer:
Which is the most likely explanation for the presence of 13 different finch species on the Galapagos Islands today? Many years ago several different species of birds migrated to the islands and the 13 finch species that currently live there are the only species that survived.
Explanation:
Answer:
A. ✅ Many years ago, several different species of birds migrated to the islands and the 13 finch species that currently live there are the only species that survived.
What did scientists learn through the Human Genome Project?
A. Where particular genes are located on human chromosomes
B. What every human gene does as well as how it functions
C. How to insert foreign genetic sequences into human DNA
D. When the first humans existed on earth
I don’t know if it is B or C
It must have been C, as the project was a study was to determine the order of the approx 3 billion bases in the human genome, which is sequencing.
When a pollutant is removed from the air by a natural process, it _____.
is gone forever
ends up somewhere else
causes chemical reactions
disrupts natural processes
Answer:
it's ends up somewhere else
can you please help me
Answer: 3. type B 4. endometrium. 5. spermatocytogenesis.
Explanation:
HELPPP!!!! AG CLASS
Complete the following sentence.
The design element of ____________ evokes the sense of touch, conveying coarseness, smoothness, and complexity through light, shadow, and pattern.
Answer:
I believe the ans is texture.
Which of the following is *true* of the placenta? Question 18 options: 1) It fully develops six months after birth. 2) It forms during the seventh month of prenatal development. 3) It is the fluid-filled sac that houses the developing embryo and fetus. 4) It allows the exchange of nutrients between the embryo and the mother, while at the same time filtering out harmful material.
Answer:
4) It allows the exchange of nutrients between the embryo and the mother, while at the same time filtering out harmful material.
Explanation:
The placenta is an organ present in all mammals. She is confirmed between the 6th and 8th week of pregnancy and has as main function the exchange of substances between the mother and the fetus. Among these substances are nutrients, gases and even secretions. The placenta also has the function of fighting infections and promoting immunity to the fetus, in addition, it can act as the lung, the intestine and the liver, while the fetus does not develop its organs.
1. Would the pollution problems caused by cars and trucks be completely solved if they all became electrically powered overnight?
2. Name one challenge we need to overcome by using solar panels
Answer:
1.This doesn't help COMPLETELY get rid of pollution. It might help lessen the pollution, but it definitely won't solve it, because there are also other things that cause pollution.
2.The main problem with solar power that has stifled its use is the fact that energy production only takes place when the sun is shining. And it won't be beneficial to the countries that aren't really close to the equator ( the middle east) and that might be a problem cause there just might not be enough energy/electricity.
g The primary detrimental effect of the presence of large amounts of biodegradable organic materials in water is ________. The primary detrimental effect of the presence of large amounts of biodegradable organic materials in water is ________. it rises to the surface and absorbs wavelengths needed by aquatic plants it causes the water to become murky it decomposes endothermically causing the temperature of the water to decrease below the limits within which most aquatic organisms can live it causes oxygen depletion in the water it causes death of bottom dwelling organisms because it agglutinates and settles to the bottom, poisoning bottom dwelling organisms
Answer:
It causes oxygen depletion in the water
Explanation:
When the amounts of organic matter in the water are significant, the activity of aerobic bacteria and other decomposers increases.
Organic matter suffers decomposition in the presence of oxygen. Microorganisms degrade it while consuming dissolved oxygen in the process. Bacteria show fast and exponential growth, so the more organic matter, the more aerobic bacteria, and the less available oxygen in the water.
Organisms that usually inhabit these waters are affected by the lack of oxygen. Plants, algae, animals, and other invertebrates that need it to survive, find themselves limited in these environmental conditions. Eventually, they dye and contribute with more organic matter.
Little by little, sedimentation begins caused by the death of vegetables and animals, sinking in the bottom.
When oxygen disappears, anaerobic bacteria grow and act, producing fermentation.
Aiden is having soup for lunch when the doorbell rings. He gets up from the
table, leaving his metal spoon in the bowl of hot soup. When he comes back a
few minutes later, the spoon is hot.
This is an example of ______________________
. I know this becaus
Answer:
23
Explanation:
Nice edge 40r0
HELP!!! I need the answer and reasoning!!! I’ll mark as brainliest!!!
Answer:
A. Destruction of terrestrial biota
Explanation:
all the other answers would decrease the carbon output. thickening of ocean sediments reinforces a carbon reservoir (which stores carbon), reduction in the use of fossil fuels would reduce the amount of carbon emissions, increase in marine biota = increase in carbon storage because marine biota is also a carbon reservoir.
Destruction of terrestrial biota would cause excess output because terrestrial biota is a carbon reservoir, and all of that carbon would be released into the carbon cycle.
answer this pleaseeeeeee
Use the drop-down menus to identify the organelles labeled on the animal cell to the right. Label A Label B Label C Label D
The identification of the organelles labeled on the animal cell to the right are:
Label A : D Label B : BLabel C : CLabel D : A What is an animal cell?An animal cell is a multicellular cell that is present in all animals. The main distinction between an animal cell is that it is made up of without cell wall.
Animal cells do not contain the things such as vacuole chloroplast that are present in plant cells and the cell walls. They are not unicellular because animals are always multicellular.
As the animal cell is a multicellular cell it contains cell organelles like mitochondria endoplasmic reticulum, ribosome, a nucleus that contain the genetic material of the animal.
Thus, the correct options are Label A : D, Label B : B, Label C : C, and Label D : A.
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Which set of organisms would belong to the Eukarya domain?
Answer:
All life can be classified into three domains: Bacteria, Archaea, and Eukarya. Organisms in the domain Eukarya keep their genetic material in a nucleus and include the plants, animals, fungi, and protists.
Answer:
All life can be classified into three domains: Bacteria, Archaea, and Eukarya. Organisms in the domain Eukarya keep their genetic material in a nucleus and include the plants, animals, fungi, and protists.
Explanation:
penge like
crossing two genetically different individuals
A.) inbreeding
B.) cloning
C.) selective breeding
D.) hybridization
Principales of Biotechnology
What are the units you guys have? I want to study them
Some units includes Tools and Processes of Recombinant Technology which consists of many topics of DNA, ligase, PCR.
If you are interested in learning about the Principles of Biotech, you could get a headstart on khan academy. It'll help you prepare.
Farmer Alan wants to improve his dairy herd's milk yield. Which cow and bull should he breed together for the next generation? Explain your answer
Answer: The ones that produce the most milk because once you start breeding them, over time ( generations ), the more offspring that will produce high amount of milk.
Answer:
Explanation:
You answered your own question wth :')
During DNA replication, which of the following components is not required?
single-stranded
DNA primers
single-stranded RNA
primers
double-stranded
DNA primers
double-stranded RNA
primers
Answer:
im not sure, but i think its single-stranded :>
Explanation:
What is created by a large pressure difference in air fronts?
A. Density
B. Dewpoint
C. Wind
D. Isobars
Answer:
A. density.
Explanation:
At a front, the two air masses have different densities,
based on temperature, and do not easily mix. One air mass is lifted above the
other, creating a low pressure zone. If the lifted air is moist, there will be
condensation and precipitation. Winds are common at a front.
Describe the difference between the level of classification known as a domain versus species. I will give brainliest
The major levels of classification are: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.Explanation:
In the carbon cycle, carbon from the nonliving environment becomes a
part of living organisms through
A. photosynthesis.
B. cellular respiration.
C. transpiration
D. absorption
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A. Photosynthesis
thankshope it helpscould you please help me
Answer: 7. Salt 8. Luteal or decline. 9. Lungs. Brainliest?
Explanation:
There is an increased population of ground
squirrels in your town's park. How will this even affect mechanical weathering in the area?
Answer:
Explanation:
The ground squirrels will dig into the ground. This will break up rocks underground or bring the rocks to the surface, where it is exposed to other weathering forces.
The amphibian heart has a single, undivided ventricle, two atria, a sinus venosus, and a Conus arteriosus. Their sarcopterygian ancestors had hearts with all of these chambers, but the ventricle was partially divided and probably aided in separating pulmonary and systemic circulatory circuits. Check the following statements that could help us understand why amphibian evolution resulted in the loss of the partial ventricular septum.
A .The loss of the ventricular septum probably occurred because blood returning to the heart of amphibians bypasses the ventricle being shunted from the sinus venasus and right atrium directly to the pulmonary artery and lungs.
B. Loss of the partial ventricular septum reflects the fact that blood returning to the heart from the systemic circuit is often highly oxygenated because many amphibians rely on cutaneous and buccal gas exchange, as well as pulmonary gas exchange, much of the time.
C. Mixing of blood from the lungs with blood from the body in the ventricle is not a problem. Loss of the partial ventricular septum is not a problem because the spiral valve keeps systemic and pulmonary blood separate within the ventricle.
D. The Conus arteriosus of the amphibian heart receives blood from the right atrium and passes the blood on to the pulmonary circulation. This keeps oxygenated and nonoxygenated blood separate.
E. The slightly asynchronous contraction of left and right atria help keep systemic and pulmonary circuit blood separated in the ventricle.
Answer:
D. The Conus arteriosus of the amphibian heart receives blood from the right atrium and passes the blood on to the pulmonary circulation. This keeps oxygenated and nonoxygenated blood separate.
Explanation:
The conus arteriosus plays an important role in directing blood into the correct arterial arches in amphibian which keeps oxygenated and nonoxygenated blood separate from one another. The Conus arteriosus of the amphibian heart receives blood from the right atrium chamber of heart and passes the blood on to the pulmonary circulation which keeps oxygenated and nonoxygenated blood separate from each other and there is no need for partial ventricular septum.
A protostar turns into a star when it is hot enough for nuclear fusion to turn hydrogen into?
Why is this flower able to self-pollinate?
O A. It has a pistil and anthers.
OB. It has stamens and anthers.
o C. It has a pistil and an ovary.
O D. It has stamens and an ovary
Answer:
Explanation:
Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant.
please help no links or ill report you
Answer:
the movement of carbon dissolved in ocean water into rocks
PLEASE HELP I WILL GIVE BRAINLIEST + Like + 5 stars. How are cell walls useful for plants but not animals?
Answer: Plant cell needs cell wall whereas animal cell do not because the plants need rigid structure so that they can grow up and out
Explanation: All cells have cell membranes, and the membranes are flexible. So animal cells can have various shapes, but plant cells only have the shapes of their cell walls.
According to Darwin's theory of natural selection, the individuals that tend to survive are those that have...
Answer: adaptated to the environment
Explanation: Dawin's theory of adaptation explains that the individuals that survive adapt to the environment