One of the first explanations of evolution was put forth by a French biologist, Jean-Baptiste
Lamarck. He theorized that animals, in responding to different environments, adopted new
habits. Their new habits caused them to use some organs more and some organs less, which
resulted in the strengthening of the former and the weakening of the latter. New characters
thus acquired by organisms over the course of their lives were passed on to the next
generation. His theory proposed this process of use and disuse, repeated over many
generations, was how species evolved.
He was wrong. Why?
Answers
Answer:
Traits acquired during an organism's lifetime cannot be passed
Explanation:
The law of use and disuse of organs as postulated by Jean Lamarck was wrong due to the fact that environmentally acquired characters cannot be passed to offspring.
Changes to organisms that are not the level of the gene cannot be passed to the offspring. For example, a wrestler that got big muscles due to constant work out cannot pass big muscles to his offspring. The offspring will need to work out in order to have big muscles. This is because big muscles in the wrestler is environmentally acquired.
Only changes that happen to the genome of an organism (mutation) can be passed to offspring.
Related Questions
What are some benefits of meiosis? and mitosis?
Why does it make sense that our sex cells use meiosis?
How might mutations in dna affect an organism?
What do mutations cause?
What are everyday things that can cause mutations?
Answers
Answer:
It comes from the woman’s Fallopian tube after fertilization
Explanation:
After the sperm successfully reaches to the woman’s egg it goes to the Fallopian tube and so on
The what method can help resolve problems logically
Answers
Punnett squares are grids that show:
A. the phenotypes of an offspring
B. All possible results of a genetic cross
C. Actual results of general crossing (mating)
Answers
Alcohols and sugars both contain the hydroxyl group. Which property does the hydroxyl group have?
A.
acidic nature
B.
solubility in water
C.
ability to form crystals
Answers
The _______ nervous system is a part of the automatic system that conserves energy by returning the body to a normal activity level through a lowered heart rate blood pressure.
Answers
Answer:
The answer is parasympathetic.
Explanation:
The Parasympathetic Nervous System is one of the two divisions of the autonomic system, which is the system that regulates all our bodily functions, like heart rate and peristalsis.
Hope this helps :)
after several cycles of cell division, a fertilized cell develops into a hollow ball of cells called a
Answers
Each phospholipid is made up of:
O A. Two phosphate groups and two fatty acid chains.
O B. A phosphate group and a fatty acid chain.
O C. Two phosphate groups and one fatty acid chain
OD. A phosphate group and two fatty acid chains.
Answers
The image shown here contains a simplified drawing of a phospholipid, with the blue circle representing the phosphate group and the two yellow tails representing the fatty acid chains.
What is the basic unit of a nucleic acid and what is it made of? WILL MARK BRAINLIEST!
Answers
NUCLEOTIDES!!! MADE OF ORGANIC MOLECULES!!!
Hopefully this helps! Good luck!
A secondary consumer eats
plants
dead material
carnivores
organisms that eat producers
Answers
Answer:
Plants.
Explanation:
Secondary consumers are herbivores, so they eat plants.
Trees with light brown bark dominate an ecosystem. The ecosystem has populations of insects that thrive on the tree bark. Over time, some insect species developed certain physical characteristics that helped them thrive on the tree bark. These physical characteristics also helped the insects defend themselves from predators. Which insect species is probably the species with the new physical characteristics?
Answers
I'm assuming this is referring to the Peppered Moth, a species of moth that adapted to the change of color on tree bark. The tree bark changed color as a result of local pollution. The moths (over the course of generations) changed color as well that better suited camouflage upon the new color of the tree bark.
Answer:
WELL, good thing I had this question and out of the four bugs I think it's the black bug with the pincers (stag beetle I think)
Explanation:
Define tissues, please fast
Answers
Body Tissues. Tissue is a group of cells that have similar structure and that function together as a unit.
Which is part of the nonspecific immune response?
O A. Fever
O B. B cells
O C. Lymphocytes
O D. Making antibodies
Answers
Answer:
A. Fever
Explanation:
Fever is part of the nonspecific immune response. Therefore option A is correct.
Fever serves as a defense mechanism against infections. When the body raises its temperature, it creates an environment that is less favorable for the growth and reproduction of many pathogens.
Higher temperatures can also enhance the activity of immune cells, such as white blood cells, allowing them to function more efficiently in fighting off the infection.
Fever is triggered by the release of certain chemicals, such as cytokines, by immune cells in response to the presence of pathogens.
These chemicals act on the hypothalamus in the brain, which regulates body temperature, causing it to increase.
Thus, fever is a physiological response of the body to infection or inflammation and is considered a part of the nonspecific immune response.
Know more about fever:
https://brainly.com/question/29770745
#SPJ5
Will give BRAINLIEST How did the universe begin?
Answers
Answer:
According to big bang model, the universe was born during a period of inflation that began about 13.8 billions years ago. Like a rapidly expanding balloon, it swelled from a size smaller than an electron to nearly its current size.
Initially the universe was permeated only by energy, some of the energy congealed into particles, which assembled into light atoms like hydrogen and helium.
At first the atoms turned into galaxies, then stars and then other elements were forged.
Explanation:
These are what happened when the universe was forming.
Hope it helps.
Lichens and mosses that first live in uninhabited areas are examples of ?
Answers
Answer:
primary successions! I hope this helps
Answer:
secondary
Explanation:
The Central Dogma of Biology states that:
"I am the Dog Mother of Biology!!!!"
DNA is translated into RNA and RNA is transcribed into proteins
RNA is transcribed into DNA and DNA is translated into proteins
DNA is transcribed into RNA and RNA is translated into proteins.
Answers
Answer:
DNA is transcribed into RNA and RNA is translated into proteins.
Explanation:
The central dogma of biology explains how gene is expressed in living organisms. Genes are segments of DNA that encodes or carry information for useful products called PROTEIN. However, these genes needs to be expressed. Gene expression occurs in two stages viz: transcription and translation.
Transcription is the first process of gene expression involving the synthesis of a RNA molecule from the gene-containing DNA molecule i.e. DNA is transcribed into RNA.
Translation is the second process of gene expression that involves the synthesis of an amino acid sequence from the information contained in the RNA transcript. These amino acid sequence forms the PROTEIN. Hence, RNA is translated into protein, which is responsible for certain phenotypes.
Question 1 of 10
2 Points
Earlobes can be either attached or detached. The allele for attached earlobes
is recessive (e), and the allele for detached earlobes is dominant (E). What
must be true if a boy is born with attached earlobes?
A. He has a heterozygous genotype.
O B. He has no E alleles.
C. He has no recessive alleles.
O D. He has one of each allele,
SUBMIT
Answers
Answer:
B. He has no E alleles.
Explanation:
In order for the boy to have an attached earlobes phenotype, he must have no E alleles, because the E is dominant. So his genotype must be ee. If he has even just a single E allele (like Ee) he will have detached earlobes, because the dominant trait will mask the expression of the recessive trait.
Why not A or D: Heterozygous Ee (one of each allele) would result in detached earlobes.
Why not C: If he has no recessive alleles, EE, he would have detached earlobes.
If a boy is born with connected earlobes, he has no E alleles because the allele for detached earlobes is dominant (E), whereas the allele for attached earlobes is recessive (e). So, the correct option is B.
What is Dominant allele?A dominant allele is one that will overpower a recessive allele's expression. Hence, only the trait linked to the dominant allele is manifested when a dominant allele and recessive allele coexist in the genotype of offspring. Consequently, for a recessive allele phenotype to manifest, both of the recessive allele must be present in the progeny.
A recessive allele causes connected earlobes (e) while the dominant earlobe detachment allele (E)
A child with the EE genotype would have disconnected earlobes.
As features of dominant alleles are manifested in heterozygous genotypes, offspring with the Ee genotype would also have disconnected earlobes. Only the child with the ee genotype would have connected earlobes. A homozygous recessive genotype is genotype ee.
Thus, the correct option is B.
Learn more about Dominant allele, here:
https://brainly.com/question/14053639
#SPJ7
What is the purpose of meiosis?
Answers
Answer:
Genetic variation by crossing over
Produce 4 daughter cells from single parent cell.
Explanation:
Electromagnetic radiation may be generated by? A) Neutrons moving with constant velocity B) Electrons moving with constant velocity C) Accelerating neutrons D) Accelerating electrons
Answers
Answer: A
Explanation: hope this is helpful :)
match the function to the correct part of the neuron.
Answers
Kindly refer the attachment for labelling.
Answer:
A- Receives signal from other neurons
B- Contain the nucleus and cell organelles
C- Protects and insulates the axon
D- Conveys electric signal across a long distance
E- Passes electrical signals to other neurons
Explanation:
A. The "A" part in the image refers to "dendrites" which function to receive signal from other neurons.
B. The "B" part refers to "soma" which contain the nucleus and other cell organelles.
C. The "C" part refers to "Myelin sheath" that protects and insulates the axon.
D. The "D" part refers to "Axon" which is responsible for conveying electric signal across a long distance.
E. The "E" part refers to "Axon terminal" which is responsible for passing or transferring the elecrtic signals to other neurons and dendrites of other neurons receive the signals and the process goes on.
Hence, the match of fucntion with the correct part of neuron is as following:
A- Receives signal from other neurons
B- Contain the nucleus and cell organelles
C- Protects and insulates the axon
D- Conveys electric signal across a long distance
E- Passes electrical signals to other neurons
Answer:
see image below
Explanation:
Chlorophyll is type of pigment and so is the melanin in your skin what is a pigment
1. Something that aids with photosynthesis
2. Something that help plants grow
3. a substance that contains color
4. Something that helps plants absorbs water
Answers
Answer:
3. A substance that contains color.
Explanation:
That's the definition that applies to every form of the word.
Replication happens before a cell divides (Mitosis). So, like Mitosis, how many DNA are there after Replication is over? please help me
Answers
Answer:
ive done science already and i think its 2 if im wrong im sorry
Ebola Eradication Strategy
* Required
Please type or paste your plan on how ebola could be contained or stopped
below
Plan: *
Your answer
This is a required question
7-10 sentence
Answers
plz answer my
Benidorm quiz
1. Where is Benidorm holiday resort located?
JORDAN
2. What is the average temperature of Benidorm in summer?
26 C
3. Before 1950s Benidorm was a small ___FISHING______ village.
4. Why did the town council encourage tourism in Benidorm?
TO VISIT BENIDORM
5. How many hotels were found in Benidorm in 1959?
6. Explain package holidays as they were used in Benidorm
7. Give three reasons why Benidorm is an excellent tourist resort
(a)
(b)
©
8. State four tourist attractions at Benidorm
1
2
3
what are two fuctional parts of a charged trna
Answers
Answer:
An amino acid and an anticodon
Answer:
An amino acid and an anticodon
Explanation:
The anti-codon region in tRNA recognizes the bases in mRNA and then decides whether the amino acid that it has is appropriate for that triplet or codon.
help
Distinguish between causal and correlational relationships, with specific examples of how the impacts of group behaviors illustrate these relationships
help me
Answers
Answer: The casual relation is a cause and effect relation whereas the correlation is when the two variables are related based on two or more parameters.
Explanation:
A casual relationship can occur in between the two events, the first occurs before the other. The first one is cause and the other one is effect. A correlation can be defined as the relation between the two variables. It does not imply causation. It can be defined as the causal relation between the two variable that are correlated.
Answer:
The difference between causal and correlational relationships is as following:
A correlational relationship is defined as a measure of relationship between two variables and the variables can be negatively correlated, positively corelated or not correlated at all.
Relation between two events said to be causal relation, if the occurrence of the first causes the other. It means the effect of second event should be caused by the the first event.
So, causal relationship between two variables must be correlated.
For example: there is a positive correlation between the organisational behaviour and work done. if any one employee will deny to work from the group of 4 employees it will affect other employees behaviour and reduces their working ability, which will reduce tehir work done. It means that organisational behaviour between employees is the cause of less work done. so, the second event (work done) is the cause of first event (organisational behaviour) and they both are positively correlated as well.
What’s the name of the first human species?
Answers
Answer:
Homo erectus. it first spread through africa and eurasia.
pls mark brainliest
Explanation:
Answer:upright man
Explanation:Upright man
Homo erectus
Homo erectus appeared about 2 million years ago and, in several early migrations, it spread throughout Africa (where it is dubbed Homo ergaster) and Eurasia. It was likely the first human species to live in a hunter-gatherer society and to control fire
A. Mobbing is a behavior that a social group of birds uses to respond to a predator threat to the entire group.
B. Mobbing is a behavior that adult birds use to respond to a
predator threat to nestlings.
C. Mobbing is a behavior that immature birds use to respond to a predator threat to themselves.
D. Mobbing is a behavior that individual birds use to respond to a predator threat to themselves.
Answers
SCIENCE: Scurvy can be cured if we consume
1 point
cheese, egg yolk
Citrus fruits, tomatoes
nuts,legumes
fish,dark leafy vegetables
Answers
Answer:
The answer to this are Citrus fruits and tomatoes
Answer:
Citrus fruits, tomatoes
Explanation:
Scurvy is a condition caused by a severe lack of vitamin C in the diet.
Scurvy is easily treated by adding some vitamin C to your diet, such as fresh fruit and vegetables.
Chemical mechanisms that can turn off or reduce an enzyme are _____.
a.) inhibitors
b.) activators
c.) centrioles
d.) vacuoles
Answers
Answer:
Explanation:
Chemical mechanisms that can turn off or reduce an enzyme are inhibitors. Explanation; -Enzyme inhibitors are molecules or compounds that bind to enzymes and result in a decrease in their activity. They can bind to an enzyme and stop a substrate from entering the enzyme's active site and/or prevent the enzyme from catalyzing a chemical reaction.
Answer:
Inhibitors
Explanation:
They inhibit enzymatic activity.
what is the difference between a medical biochemist and a biochemist
Answers
Answer:
Explanations
Biochemistry is literally biological chemistry:the study of the chemical process within and relating to organisms. Biomedicine is medical biology:it really comes down to viewing biological sciences from a clinical perspective ... I hope this help u
What are the functions of xylem
Answers
Answer:
Xylem provides mechanical support and storage.
Explanation: