scientists have discovered several species of insect that all contain the same DNA sequence on their second chromosome. What does this evidence suggest?
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Related Questions
3. After learning about chemical reactions, Olivia investigated different
kinds of chemical changes using substances she found in her kitchen
so she could see these changes. Which of the following can occur when
a chemical reaction takes place? Choose the three statements that
apply.
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Answer:
ABC
Explanation:
Lets say baking soda and vinegar when they react there is a chemical reaction where bonds break and from changing it into a new compound no longer just baking soda and vinegar.
what does this imagine represent?
Answers
Answer:
it mean a transformation from young to old,down to up,low self esteem to hight esteem and week to strong
Answer:
monkey to human evolution or human evolution
Explanation:
3. The sequence of nitrogenous bases is unique to each organism. The sequence of the
bases in DNA is most important for which of the following?
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HELP PLS Using the picture below, which wave would have a higher pitch.
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Answer:
may the above one i guess...i dont know
Is Earth always the same distance from the
Sun? Explain.
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Answer:
No
Explanation:
The earth travels in an ellipse, an ellipse is a flattened circle, and the sun is closer to one end of that ellipse and far in another end. That said the Earth is not the same distance as the sun
what do you see inside the cell? three chromosomes three sister chromatids three homologous pairs of chromosomes three homologous pairs of chromatids
Answers
Answer:
three homologous pairs of chromosomes
Explanation:
Inside the cell we can see three homologous pairs of chromosomes as in humans there are 23 pair of homologous chromosomes and they are very similar in size and shape.
Three chromosomes are not possible to see because there are only two chromosomes and if anyone is having three chromosomes then the person is suffering from down syndrome having 47 chromosomes.
Three sister chromatids is also not possible because only two sister chromatids are found after DNA replication.
Three homologous pairs of chromatids is also not possible because chromatids are not found in pair and sister chromatids are called homologous chromosomes.
Hence, the correct answer is "three homologous pairs of chromosomes".
where the photosynthesis occured
Answers
Answer:
In plants, photosynthesis takes place in chloroplasts.
Answer:
the chloroplast
Photosynthesis occurs in the chloroplast, an organelle specific to plant cells. The light reactions of photosynthesis occur in the thylakoid membranes of the chloroplast.
Explanation:
I hope this helps and pls mark me brainliest :)
what disease that cause the cell membrane to break
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Answer:
Cystic fibrosis
Explanation:
cystic fibrosis is caused by a mutation i.e the cell membrane starts to separate
Which temperature do you think is better for using water as a solvent and why?
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Answer:
The hotter the water, the better the solvent
Explanation:
The higher, the better
Which of the following is not true about the rock layers?
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Answer:
Layer C is older than layer F
Explanation:
They are the same age
Write one function of each of the following enymes
1) Pepsin( 2) Lipase
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Answer:
the pepsin produces pepsinogen and the pepsinogen also peptides
Which characteristic is true of sexual reproduction but not of asexual reproduction?
Answers
Answer:
sexual reproduction involves to organisms
Explanation:
Why do individuals with recessive
traits show up with less frequency
in populations?
A. There are more dominant alleles in most
populations.
B. Individuals must inherit two copies of a
recessive allele to show the trait.
C. Recessive traits greatly outnumber dominant
traits in most populations.
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Explanation: A recessive trait must be passed down from both parents
The individuals with recessive traits show up with less frequency in populations because the individuals must inherit two copies of a recessive allele to show the trait.
What is an allele?"They are the alternative forms of a gene."
What is a recessive trait?It is a trait that is expressed only when the both alleles in the genotype are recessive.The genotype should be homozygous recessive for the trait to appear.What is a dominant trait?A dominant trait is a trait that is expressed even when one parent contributes the dominant allele.It is expressed when the genotype is heterozygous dominant or homozygous dominant.To learn more about recessive, dominant, and populations here,
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Gamma globulin is a _____.
bacterium
treatment for measles
disease
virus
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Answer: Gamma globulin is a disease.
Explanation: Hope this helps you :)
what evidence and logical reasoning support the conclusion that anaerobic organisms evolved first, followed much later by aerobic organisms?
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Answer: The atmosphere of the early Earth consists mainly of carbon dioxide and nitrogen, with little or no oxygen. In this case, the ancient prokaryotes are anaerobic, which evolved in the absence of oxygen. Eventually, when photosynthetic bacteria became common, they released oxygen and changed the Earth's atmosphere.
Explanation: i took a test with this on it, i hope my answer helps
what are 3 things u can say about group 1 elements?
what are 3 things you can say about group 17 elements ?
what are 3 things u can say about group 18 elements ?
pls hellppp!
Answers
Answer:
what are 3 things u can say about group 1 elements?
1. They are shiny soft metals
2. They are Very Reactive
3. When they are exposed to air, they tarnish due to oxidation
what are 3 things you can say about group 17 elements?
1. They all have an Ionic Charge.
2. They use ionization Energy by requiring one additional electron to form a full octet
3. They All Are non-metals.
what are 3 things u can say about group 18 elements?
1. They all are noble gases
2. They rarely combine with other elements
3. they are all odorless colorless monatomic gases with very low chemical reactivity
Explanation:
When HIV infects a cell, it uses the host’s cell organelles to make more HIV
viruses. Which of the following is TRUE about the cell organelles used by
HIV/AIDS virus?
A)Synthesis of free HIV proteins by ribosomes, membrane bounded
proteins by rough endoplasmic reticulum and modification of
newly synthesized HIV-membrane proteins is done by Golgi
apparatus.
B)All cell organelles including ribosomes, Rough and smooth
endoplasmic reticulum and vesicles are used to synthesize one type
of viral protein.
C) Only ribosomes are used by the virus for protein synthesis.
D)Nucleolus is used by the virus essentially to enhance the rapid
production of ribosomes to ensure more protein synthesis.
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A diagram that shows how scientists think different groups of organisms are related _________________ ________________.
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Answer:
isolation complete seperation
Explanation:
I get that right yo day in class
4. What kind of functions can a plant cell perform that an animal cell cannot? Explain.
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Answer:
Photosynthesis
Explanation:
Many fungi play a critical environmental role as _______, breaking down organic material into nutrients for the soil and other organisms.
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HELP!!!! Restriction maps illustrate the lengths of DNA fragments between restriction sites. Which of the following information can be gathered from the analysis of restriction maps? Select ALL that apply.
A) gene sequence
B) nucleotide sequence
C) presence of mutations
D) disease identification
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Also for A you would only know a partial sequence of the gene.
What type of rock is this new island made from?
Answers
Answer:
lava rock i think
Explanation:
Answer:
On a tiny island between Madagascar and the east coast of Africa, scientists have discovered a mother lode of rocks that shouldn't be there. The island is made from igneous, volcanic rock that hails from the oceanic crust.
Explanation:
:)
Transcribe and translate the following DNA strand into an RNA strand: TACCA
GTAGATT
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Answer:
Explanation:Key points:
Transcription is the first step in gene expression. It involves copying a gene's DNA sequence to make an RNA molecule.
Transcription is performed by enzymes called RNA polymerases, which link nucleotides to form an RNA strand (using a DNA strand as a template).
Transcription has three stages: initiation, elongation, and termination.
In eukaryotes, RNA molecules must be processed after transcription: they are spliced and have a 5' cap and poly-A tail put on their ends.
Transcription is controlled separately for each gene in your genome.
Introduction
Have you ever had to transcribe something? Maybe someone left a message on your voicemail, and you had to write it down on paper. Or maybe you took notes in class, then rewrote them neatly to help you review.
As these examples show, transcription is a process in which information is rewritten. Transcription is something we do in our everyday lives, and it's also something our cells must do, in a more specialized and narrowly defined way. In biology, transcription is the process of copying out the DNA sequence of a gene in the similar alphabet of RNA.
Overview of transcription
Transcription is the first step in gene expression, in which information from a gene is used to construct a functional product such as a protein. The goal of transcription is to make a RNA copy of a gene's DNA sequence. For a protein-coding gene, the RNA copy, or transcript, carries the information needed to build a polypeptide (protein or protein subunit). Eukaryotic transcripts need to go through some processing steps before translation into proteins.
In transcription, a region of DNA opens up. One strand, the template strand, serves as a template for synthesis of a complementary RNA transcript. The other strand, the coding strand, is identical to the RNA transcript in sequence, except that it has uracil (U) bases in place of thymine (T) bases.
Example:
Coding strand: 5'-ATGATCTCGTAA-3'
Template strand: 3'-TACTAGAGCATT-5'
RNA transcript: 5'-AUGAUCUCGUAA-3'
For a protein-coding gene, the RNA transcript contains the information needed to synthesize a polypeptide (protein or protein subunit) with a particular amino acid sequence. In this case:
RNA transcript (acting as messenger RNA): 5'-AUGAUCUCGUAA-3'
Polypeptide: Met-Ile-Ser-STOP
In transcription, a region of DNA opens up. One strand, the template strand, serves as a template for synthesis of a complementary RNA transcript. The other strand, the coding strand, is identical to the RNA transcript in sequence, except that it has uracil (U) bases in place of thymine (T) bases.
Example:
Coding strand: 5'-ATGATCTCGTAA-3' Template strand: 3'-TACTAGAGCATT-5' RNA transcript: 5'-AUGAUCUCGUAA-3'
For a protein-coding gene, the RNA transcript contains the information needed to synthesize a polypeptide (protein or protein subunit) with a particular amino acid sequence. In this case:
RNA transcript (acting as messenger RNA): 5'-AUGAUCUCGUAA-3' Polypeptide: Met-Ile-Ser-STOP
RNA polymerase
The main enzyme involved in transcription is RNA polymerase, which uses a single-stranded DNA template to synthesize a complementary strand of RNA. Specifically, RNA polymerase builds an RNA strand in the 5' to 3' direction, adding each new nucleotide to the 3' end of the strand.
RNA polymerase synthesizes an RNA strand complementary to a template DNA strand. It synthesizes the RNA strand in the 5' to 3' direction, while reading the template DNA strand in the 3' to 5' direction. The template DNA strand and RNA strand are antiparallel.
RNA transcript: 5'-UGGUAGU...-3' (dots indicate where nucleotides are still being added at 3' end)
DNA template: 3'-ACCATCAGTC-5'
RNA polymerase synthesizes an RNA strand complementary to a template DNA strand. It synthesizes the RNA strand in the 5' to 3' direction, while reading the template DNA strand in the 3' to 5' direction. The template DNA strand and RNA strand are antiparallel.
RNA transcript: 5'-UGGUAGU...-3' (dots indicate where nucleotides are still being added at 3' end) DNA template: 3'-ACCATCAGTC-5'
Stages of transcription
Transcription of a gene takes place in three stages: initiation, elongation, and termination. Here, we will briefly see how these steps happen in bacteria. You can learn more about the details of each stage (and about how eukaryotic transcription is different) in the stages of transcription article.
Initiation. RNA polymerase binds to a sequence of DNA called the promoter, found near the beginning of a gene. Each gene (or group of co-transcribed genes, in bacteria) has its own promoter. Once bound, RNA polymerase separates the DNA strands, providing the single-stranded template needed for transcription.
The diagram below illustrates changes over time in a population of foxes in the
wild.
What process is illustrated in the diagram?
extinction
overproduction
natural selection
artificial selection
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Over time the cartilage in your body is replaced by solid bone and is usually complete by the time you stop growing.
True
or
not?
Answers
Fossil evidence can be used to determine the degree to which different organisms are related. The relatedness of organisms can also be determined by examining
A. internal and external anatomical features of the organisms.
B. ancestors that the organisms share in common.
C. chemical processes that occur within the organisms.
D. all of these
Answers
Answer:
D
Explanation:
The relatedness of organisms can also be determined by examining internal and external anatomical features of the organisms, ancestors that the organisms share in common and chemical processes that occur within the organisms. Therefore, option (D) is correct.
What are anatomy characteristics?Human anatomy is characterized by reproduction, inheritance, cellular organization, growth and development, response to stimuli, evolutionary-adapted traits, and metabolism.
Anatomical characteristics that are shared by multiple organisms as a result of a common ancestor are known as homologous structures. Homologous structures, or homologies, are the tetrapod limbs.
the comparative study of the body structures of various animal species to comprehend the adaptive changes they have undergone since common ancestors evolved.
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Explain the mechanisms by which sex-linked
diseases are inherited.
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Answer:
Sex-linked diseases are passed down through families through one of the X or Y chromosomes. X and Y are sex chromosomes. Dominant inheritance occurs when an abnormal gene from one parent causes disease, even though the matching gene from the other parent is normal. The abnormal gene dominates.
Answer:
Sex-linked diseases are passed down through families through one of the X or Y chromosomes. X and Y are sex chromosomes. Dominant inheritance occurs when an abnormal gene from one parent causes disease, even though the matching gene from the other parent is normal.
What characteristic have helped humans survive major changes in the environment? the ability to adapt to new conditions the ability to outsmart predators the ability to run the ability to write and speak language
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Answer:
Characteristics that have helped humans survive major changes in the environment are their brains and body. Human's social cooperation with tool making always increases.
Survival of the fittest explains the mechanism of natural selection. The ability to adapt to new changes has helped humans survive major changes in the environment.
What is adaptation?Adaptation is the ecological process that is the process of the adjustment of the structures, behaviors, and physiology of the organism to suit the altered environment.
It is the variation that increases the fitness of the organism so that it can survive and reproduce in a specific environment. It is a dynamic evolutionary method, that is essential for the sustainability of the organisms.
Therefore, option A. the ability to adapt to new conditions has helped humans survive.
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WHICH ONE IS IT??? AHHH
Answers
Answer:
b
Explanation:
Answer:
ecology? bc I don't think it's healthy or food chain
6. How does Widder tell the difference between the species she observes in the deep ocean? Give an example of a species she identifies based on this observation.
Answers
Widder can identify different species by observing the differences in:
ColorShapeSizeAmong others.What is a specie?The word specie is used in biology to refer to a group of organisms that can reproduce consistently as they share the same taxonomy.
How can Widder identify different species?Identifying species is possible through multiple techniques that include:
Analyzing the genes of the organism.Identifying species based on observation.In the case of observation, which is a common technique. The best is to observe the physical characteristics of the organism that can make it different from other species. This includes observing:
Shape ColorSizeBehaviorAmong others.Note: This question is incomplete because there is no information about the species Widder is observing. Due to this, I answered it based on general knowledge.
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Answer: Edith Widder uses the bioluminescence (light) produced by the different sea creatures to identify their various species. For example, during her talk, she mentions a fish with a headlight behind its eye that retracted like a Lamborghini’s headlight. She also describes a Christmas tree fish where everything lights up, including the jewel-like organs in its body.
Explanation: This question comes from the TED talk "Glowing life in an underwater world" by Edith Widder. During her talk, she vividly describes her experience seeing sea organisms that display bioluminescence in the ocean.