1) According to the diagram, divergence among mammals took place about 75 mya.
2) Scientists are able to determine common ancestors by studying molecular data.
3) Darwin's theory of evolution by natural selection states that animals change over long periods of time.
4) Scientists are closesly studing how genes reorganize themselves.
5) Some scientists, however, think new species evolve quickly.
6) Still, among scientists, the principles of natural selection remain unchanged and highlight how animals evolve.
7) The main tool for the study of evolution is careful observation of fossils and the anatomy of animals.
8) Scientists also study animal embryology.
9) What no one doubts is the wide diversity among organisms on Earth.
10) The divergence that took place among mammals helps us understand why whales and dolphins are mammals and not fish.
Fun fact: Uh, I happen to discover a whole packet of answer keys, not just for this but also for other assignments and stuff. (O.O)
What is the complimentary DNA strand to this template?
ACTCAAGAC
Answer:
The answer would be c
Explanation:
ACTCAAGAC
TGAGTTCAG
they compliment one another
Answer: c. TGAGTTCTG
Explanation: Adenine only bonds with thymine and cytosine only bonds with guanine
PLSS HELP IMMEDIATELY!!! ILL MARK BRAINIEST IF U DONT LEAVE LINKS OR GUESS!!!
Answer:
Blood is pushed through vessles
Explanation:
all the other answers are... weird.
Answer:
C
Explanation:
Heart needs exercise and at all times if your heart doesn't get rest you die so it's the most important part
What are TWO specific ways in which proteins are regulated in eukaryotic cells?
Answer:
Feedback inhibition and allosteric regulation.
Explanation:
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Answer:
b
Explanation:
Which statement best describes the observations made by students after spraying water on the model to simulate rain?
Answer: the answer is surface runoff, you’re welcome
Explanation:
I just took this test and got a 100
Explain how a single base mutation can encode a protein that has many missing amino acids.
Answer:
Silent mutation: Some mutations that change DNA bases do not have any effect on the sequence of amino acids in the protein. These mutations are called silent mutations and they do not affect the structure or function of the protein because there is no effect on the amino acid sequence.
Ivan is interested in becoming an engineer in the field of improving communication technology. He hasn't yet decided if he wants to focus more on the hardware or software side of the technology.
What would Ivan be studying if he focused on software?
A. the soft parts of the technology, such as the rubber coating around the wires
B. the antenna within the technology that sends and receives the data
C. the computer that runs the physical parts of the technology
D. the programming that makes the physical parts of the technology run
Answer:
van is interested in becoming an engineer in the field of improving communication technology. He hasn't yet decided if he wants to focus more on the hardware or software side of the technology. What would Ivan be studying if he focused on software? ... the antenna within the technology that sends and receives the data.
Explanation:
Ivan would need to study the programming that makes the physical parts of the technology run if he focused on software. Thus, the correct option for this question is D.
What is Communication technology?Communication technology may be defined as a type of modern technology that transfers specific information among people within a fraction of a second and/or machines through the utilization of technology.
The software side of technology deals with all sorts of programming and its languages that make it possible to run physical parts of the technology. This side of the technology develops methods, programming languages, and tools to assists in exploring the function of physical parts.
Therefore, the programming that makes the physical parts of the technology run will the primary focus of Ivan if he focused on software. Thus, the correct option for this question is D.
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in pea plants, purple are dominant to white.
complete the chart showing the genotypes and phenotypes possible.
someone help me i’m kinda lost on how i do this
Answer:
PP (genotype) - Purple (Phenotype)
Pp (Genotype - Purple (Phenotype)
pp (Genotype) - White (Phenotype)
Explanation:
The genotype allele combinations, in order to for purple to be dominant there are three possible genotypes
*Capital P represents a purple dominant allele
*Lowercase p represents a white recessive allele
(Alleles are the variants of a certain gene, ex: brown eyes, green eyes, etc. )
A Dominant always overpowers the recessive, the only way for a recessive to show would be to have two recessive alleles from both parents
ex: Green eyes recessive to Brown
B - Brown bb = green eyes (from dad)
b - green bb = green eyes (from mom)
this means that their child would have green eyes because there is no brown present
So for your pea plants to be purple
Pp = Purple pp = white
PP = Purple (yes there can be white recessive present, it just might not appear as a plant because of the percent of purple)
The colors or observations we see as the plant are the phenotypes
so the colors I have listed would be the phenotypes
Don't get alleles and phenotypes confused, alleles are the various forms of a gene, and phenotypes are what we see when the gene is brought through.
Someone pls answer my last question smh
Answer:
let me see what it is
Explanation:
Answer:
ok
Explanation:
Did the T. Rex have an amniotic egg?
Question 15 options:
Probably not because there is no history of closely related animals having an amniotic egg.
It is quite likely because lots of animals in the past have had amniotic eggs, so the T. Rex probably did too.
It is quite likely because both the caiman and parrot have an amniotic egg and they share a recent common ancestor with the T. Rex
Probably not because the T. Rex is no longer living.
I mean isn't it obvious
Which process forms fossils?
A. variation
B. adaptation
C. mineralization
no links real answer
Is race a biological characteristic determined by our genes?
Answer:
No, they are not. The concept of human races appears to be solidly grounded in present-day biology and our evolutionary history. But if you asked that conference of geneticists to give you a genetic definition of race, they wouldn’t be able to do it. Human races are not natural genetic groups; they are socially constructed categories. Genes certainly reflect geography, but unlike geography, human genetic differences don't fall along obvious natural boundaries that might define races.
The father of two children is type 0+, and the mother is type A+. The children are O- and A+.
Given this information, what can you say about the genotypes of father and mother?
A student is observing an image of an object that could be a comet, meteoroid or asteroid. Which of the following questions
would BEST confirm that the object is a comet?
A. Does the object contain ice?
B. Does the object contain metals?
C. Where is the object found?
D. How big is the object?
Answer:
A does the object contain ice
Explanation:
The BEST question that would confirm that the object is a comet is "Does the object contain ice?" Hence the correct option is A.
What are comets?Comets are small, icy celestial bodies that originate from the Kuiper Belt and the Oort Cloud. As they approach the Sun, they heat up and release gas and dust in the form of a coma and a tail, which can be observed from Earth. Therefore, if the object contains ice, it is most likely a comet.
Meteoroids, on the other hand, are smaller rocks that travel through space, and asteroids are larger rocks that orbit the Sun between Mars and Jupiter. Neither meteoroids nor asteroids typically contain ice.
As for the other options, whether the object contains metals or how big it is does not provide enough information to determine whether it is a comet, asteroid, or meteoroid. And while the location of the object may provide some clues about its origin, it is not a definitive factor in determining whether it is a comet.
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Help please do soon!
Answer:
The relationship between the fossil fuel and carbon is that once the fossil fuel is used, it releases carbon dioxide into the air.This proves that fossil fuels have a relationship to carbon dioxide.
8. Which of these is not a possible effect of the destruction of the
rain forest?
O A. drought
O B. crop failure
O c. more oxygen in the air
O D. increase in carbon dioxide in air
Answer:
drought
Explanation:
droughts are bad for the rain forests without water some plants can die
Which animal is an example of benthos? (1 point)
diatom
turtle
oyster
whale
Answer:
am pretty sure it's diatom
What mechanisms of evolution could be involved in the evolution of wolves and dogs? *
Natural Selection and Genetic Drift
Diffusion and Osmosis
Photosynthesis and Cellular Respiration
Natural Selection and Genetic Drift
evolution refers to the change in the characteristics of a species over several generations and relies on the process of natural selection.
there are four types of mechanism of evolution:
natural selectiongenetic driftgene flowmutationthe mechanism of evolution could involved in the evolution of wolves and dogs are:
natural selection and genetic drift
natural selection favored wolves that were bold and friendly. bold and aggressive wolves would be killed and hence unable to breed. this allowed bold and friendly dogs to breed, which was key to eventual evolution into dogs.
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Summarize the benefits and drawbacks of becoming a veterinarian,
Answer:
Drawbacks: Veterinary school is long and extensive, some surgeries can take hours, sometimes you may get an uncooperative animal, you might have to deal with putting an animal down, which can be hard. You also might be scared for live with graphic images, lol.
Benefits: Vets get paid a lot, they help animals, they help animals live the best life, people are VERY appreciative of the work they do for animals, they are always around animals, so they may see the cutest puppies!
Hope this helps!
quizlwt Select all that are true regarding gas exchange in a vascular plant. Guard cells regulate whether stomata are open or closed based on availability of water in the plant. Guard cells regulate whether stomata are open or closed based on availability of water in the plant. When stomata are closed, the plant is not able to exchange oxygen and carbon dioxide gas with the atmosphere. When stomata are closed, the plant is not able to exchange oxygen and carbon dioxide gas with the atmosphere. Stomata are open when a plant is low on water, and closed when a plant has plenty of water. Stomata are open when a plant is low on water, and closed when a plant has plenty of water. Plants close their stomata to reduce water loss. Plants close their stomata to reduce water loss. Guard cells regulate whether stomata are open or closed based on availability of sugars in the plant. Guard cells regulate whether stomata are open or closed based on availability of sugars in the plant. Transpiration is loss of water vapor from leaves. Transpiration is loss of water vapor from leaves. Skip to navigation
Answer:
Transpiration is loss of water vapor from leaves. Guard cells regulate whether stomata are open or closed based on availability of water in the plant. When stomata are closed, the plant is not able to exchange oxygen and carbon dioxide gas with the atmosphereExplanation:
The gas exchange of plants is part of the cellular respiration process, where the plants both remove and release gases into the atmosphere. This exchange happens through structures present in the leaves of plants, which are called stomata. Stomata function as doors, if they are closed it is impossible for the plant to promote gas exchange, but if they are open. Transpiration occurs with the release of water vapor through open stomata. It is in this water vapor that the plant releases oxygen into the atmosphere.
The opening and closing of the stoma is a highly regulated process, because opening the stoma makes the plant lose water. In this case, the guard cells are responsible for opening and closing the stoma whenever necessary and the plant has good water levels.
Weekly Assessment #9
Insects, arachnids, worms, and mollusks all belong to which group?
verterbrate
classification
invertebrate
vascular
Answer: Invertebrate
Explanation: Invertebrate do not have a spine.
Please some one help ASAP no links please
Answer: I think it is c
Explanation:
explain how the herbicide can inhibit the transport of minerals in the weed plants?
Answer:
Herbicides kill or suppress plants by interfering with essential plant processes such as photosynthesis. All of the interactions between an herbicide and a plant from application to the final effect are referred to as the mode of action.
Explanation:
hope it helps u
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predator and prey difference
What type of physical evidence is acquired through the senses
help quick
Answer:
Empirical evidence is information acquired by observation or experimentation.
Explanation:
I hope it will help you
How do emission and reflection nebulae differ? (1 point)
the presence of young stars
contain remnants of stars
hard tine edges
interactions with light
Answer:
interactions with light
Explanation:
Answer: yes it is D)Interactions with light
Explanation:
What is the end result of transcription?
an amino acid chain (protein)
messenger RNA (mRNA)
complementary DNA
Okazaki fragments
Put the following molecules in order of the correct sequence they are made in protein synthesis.
Reorder answers
RNA
Protein
Gene
Answer: 1. messenger RNA (mRNA). 2. rna, gene, protein. brainliest?
Explanation:
The end result of transcription is mRNA, and the correct sequence of molecules in protein synthesis is Gene → Transcription (RNA) → mRNA → Protein.
Transcription is the process in which a segment of DNA is used as a template to synthesize a complementary mRNA molecule. It occurs in the nucleus of eukaryotic cells and in the cytoplasm of prokaryotic cells. During transcription, the DNA molecule unwinds, and an enzyme called RNA polymerase binds to a specific region of the DNA known as the promoter. The RNA polymerase then moves along the DNA strand, synthesizing a complementary mRNA molecule using the base pairing rules (A with U, G with C).
The end result of transcription is the production of mRNA. mRNA is a single-stranded molecule that carries the genetic information from the DNA to the ribosomes in the cytoplasm. It serves as a template for translation, where the information encoded in the mRNA is used to synthesize proteins.
Regarding the sequence of molecules in protein synthesis, the correct order is as follows:
Gene: A gene is a specific sequence of DNA that contains the instructions for making a protein. It serves as the starting point for protein synthesis.Transcription (RNA): Transcription is the process in which an mRNA molecule is synthesized from a DNA template. This step occurs in the nucleus.mRNA: The mRNA molecule carries the genetic information from the gene to the ribosomes. It serves as the template for protein synthesis.Protein: Protein synthesis occurs during translation, where the mRNA is read by ribosomes, and amino acids are assembled in the correct order to form a protein.Therefore, the correct sequence of molecules in protein synthesis is Gene → Transcription (RNA) → mRNA → Protein.
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please help i’ll give brainliest
Answer:
its the second answer
Explanation:
____ The bristle worm living with the hermit crab.
A. Mutualism
B. Commensalism
C. Parasitism
Answer:
A. Mutualism
Explanation:
Mutualism The bristle worm living with the hermit crab.
Which product shown in the picture is not made for a natural resource that comes from living thing
Answer:
metal fork is the answer
Answer:
the metal fork is the answer !!!!
Explanation:
Here -
1. wood comes from a tree that is living.
2. chicken breast is from a chicken that is living.
3. slice tomatoes are from plants which plants are a living thing.