Which of the following statements is true?
Only somatic mutations are important to evolution because they can be inherited.
Acquired mutations are passed down from parent to offspring.
O Hereditary mutations are caused by external factors, such as radiation.
O Mutations are the most fundamental way to add new genes to a gene pool.
Answers
Answer: A,B, and C.) Only somatic mutations are important to evolution because they can be inherited. Acquired mutations are passed down from parent to offspring. Hereditary mutations are caused by external factors, such as radiation.
Explanation:
The true statement is: Mutations are the most fundamental way to add new genes to a gene pool.
A mutation is any alteration in the genetic material (i.e. nucleotide sequence) of the genome of an organism.
Mutations can be caused by both external (e.g., UV light) and endogenous (e.g., oxidative DNA damage) factors.
Mutation can be divided into somatic (body) cells and germline (gamete) cells. Only germline mutations can be inherited and pass from parents to offspring.
Acquired mutations are genetic alterations that are not present in the zygote, but are acquired sometime later in life. This type of mutation is involved in the development of cancer.
Mutations are the raw material on which natural selection operates, thus being the most important cause of evolutionary novelty.
In conclusion, mutations represent the most important source of genetic variability and a fundamental way to add new genes to a gene pool.
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Related Questions
Being genetically identical to the parent is most advantageous for organisms in which situation?
A.
Many offspring are needed in a very short amount of time.
B.
The environment is just like the one the parent lived in successfully.
C.
Mates cannot be found easily and the species is dying out.
D
The environment is changing and fast reproduction is needed.
Answers
Answer:
B
Explanation:
In asexual reproduction organisms give rise to genetically identical clones and reproduce in higher amounts, hence option d environment is changing and the need for fast reproduction is correct.
What is genetically identical?The children are clones of both the parent and each other. Asexual reproduction has several advantages, including the ability to fast increase the population when conditions are favorable.
There is just one parent required. During sexual reproduction, two people's genetic material is united to generate genetically diverse children who differ from their parents.
It is assumed that the genetic variety of sexually generated offspring gives species a higher chance of survival in an uncertain or changing environment.
Therefore fast reproduction is needed, because the environment is changing, and asexual reproduction makes a higher population, hence option d is correct.
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A young man recently learned from a genetics doctor that he had a condition called Friedreich's ataxia. This syndrome affects the arms and the legs with the person usually needing a wheel chair. Neither of his parents have this disorder. However the young man's grandfather was wheelchair bound, but didn't know why because genetic information was very limited when his grandfather grew up.
What are the genotypes of each of the individuals mentioned in this question? Create a pedigree chart to support your answer.
Answers
Answer:
i believe dominant genotypes
Explanation:
from memory sorry for no pedigree chart
why is it beneficial for female peacocks to choose to mate with a male peacock with a full colorful trains?
URGENT
Answers
Answer:
Peahens often choose males for the quality of their trains -- the quantity, size, and distribution of the colorful eyespots. Experiments show that offspring of males with more eyespots are bigger at birth and better at surviving in the wild than offspring of birds with fewer eyespots.
How many different amino acids are used in protein synthesis?
Answers
Answer:
Explanation:21 amino acids
Thus, protein synthesis relies universally on 61 sense codons that encode 21 amino acids — including the nonstandard amino acid selenocysteine [2] — and three termination codons.
What % of energy does plants receive from the sun
Answers
Answer:
Most solar energy occurs at wavelengths unsuitable for photosynthesis. Between 98 and 99 percent of solar energy reaching Earth is reflected from leaves and other surfaces and absorbed by other molecules, which convert it to heat. Thus, only 1 to 2 percent is available to be captured by plants.
Explanation:
Please help!!!!!!!! Will mark brianlist ASAP
Answers
I'm going with C. It may be wrong but I think it's C.
Answer:
the answer is D.........
A forest fire caused by lightening destroys an entire forest. The population of deer was drastically reduced within the forest leading to a decrease in genetic variation. This situation is an example of -
Mutations
Gene Flow
O Genetic Drift
Divergent evolution
Answers
Answer:
I'm like 90% sure that it is Gene flow
Explanation:
Based on the law of conservation of matter, which
statement is true about a chemical reaction?
А
Mass stays the same.
B
Matter is created.
С
Matter is destroyed.
D
Matter in a reaction can never change states.
Answers
Answer:
a
Explanation:
A black hybrid rabbit is crossed with a white purebred rabbit.
What is the probability of an offspring being black?
A. 25%
B. 50%
C. 75%
Answers
Answer
A. 25%
Explanation:
This is because the black hybrid would be 50% one breed and 50% another breed. Then the white purebred is 100% one specific breed. So by mating, all of those breeds that the parents have all reduce by 1/2 for the offspring.
Please help!!
Does the amount energy from food eaten by each organism equal the amount of energy used but each organism?
Answers
Answer:
Ecosystem follows the 10% law.
Explanation:
The amount of energy that is available in the ecosystem is equal and same is equally distributed. Plants use solar energy and convert it into usable energy for processing food and water in tissues and reproduction and root development. Later on when the plant dies or is eaten up the dead organic matter is converted to energy that is derived by the herbivorous or primary consumer. When then (90%) lost through respiration and digestion, waste generation in the body. After which the energy left may be again taken up by some secondary consumer and only 10% energy remains while the rest is diffused in the ecosystem and environment. Thus energy is neither created nor destroyed but transformed in its form.Which statement correctly compares electric charge with electric current?
D) They both require a human to make them.
A) Neither require charged particles.
B) They both require a battery and a bulb.
C) They both require a movement of charged particles.
Answers
Answer:
I think it's C
Explanation:
Answer:
Answer is C)
Explanation:
Not all electricity is generated by humans, a battery or bulbs... BOTH must have an electric current in order to be active
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When humans burn fossil fuels, ________________ is released back into the atmosphere.
Answers
Answer:
Carbon Dioxide
Explanation:
Answer:
Carbon Dioxide
I need help please.
Answers
Answer:
c.
Explanation:
Which of the following explains why an apple looks red? The apple reflects red light and absorbs all other visible wavelengths. The apple absorbs red light, and reflects all other colors of light.. The apple is absorbs all visible wavelengths, but absorbs red light better The apple is reflects all light that hits its surface.
Answers
Answer:
The apple reflects red light and absorbs all other visible wavelengths
Explanation:
The apple is only reflecting the color red and is absorbing the other colors of light (wavelengths)
The correct explanation why an apple looks red is that the apple reflects red light and absorbs all the other visible wavelengths. Thus, the correct option is A.
What is Absorption and reflection of light?Light absorption is the process in which the light ray is absorbed by the matter and converted into a form of energy. In an atom, the electrons vibrate at a specific frequency, then this is called as the natural frequency.
Reflection is a phenomenon of light. When a ray of light approaches a smooth polished surface such as metal and the light ray bounces back, it is called the reflection of light. The incident light ray which land on the surface is reflected off from the surface. The light ray that bounces back is called the reflected ray.
Therefore, the correct option is A.
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Answers
Answer:
it's definitely saturn and jupiter
Which behavioural adaptation was shown by butterfly"
A. Mimicry
B.predation
C. Protection
D.camouflage
Answers
Radioactive strontium (Sr) is harmful to humans. Strontium, when ingested by cows, can be introduced to milk through the process of replacing an element of the same group or family that has similar properties. Using the Periodic
Table, which element do you think can be easily replaced by strontium in milk?
Answers
Answer: K
Explanation:
Radioactive strontium (Sr) is harmful to humans. Strontium, when ingested by cows, can be introduced to milk through the process of replacing an element of the same group or family that has similar properties. potassium (k) element can be easily replaced by strontium in milk
What is radioactive material ?The radioactive material is a liquid, solid or gaseous which can be defined as the element containing radionuclides in concentrations .
These elements are more than the concentrations established as exempt by government authorities where Radioactivity is the emission of ionizing particles released by the disintegration of atomic nuclei.
This type of radioactive wastes are released in various industries through normal operations, flowing from facilities and environmental activities.
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The cell cycle begins again after
A. synthesis has copied each chromosome.
B. mitosis has formed two identical nuclei.
C. cytokinesis has formed two new cells.
D. differentiation has made cells specialized.
Answers
Answer:
C. cytokinesis has formed two new cells.
Explanation:
Cell cycle has different stages called G1, S, G2, and M. ... This is where the cell actually partitions the two copies of the genetic material into the two daughter cells. After M phase completes, cell division occurs and two cells are left, and the cell cycle can begin again.
What is the most important organism on the food web?
Answers
Answer:
autotrophs
Explanation:
please vote me as the brainliest i just need one more
What is an astronomical unit or AU?
A)
A unit of time equal to one light year or 6 trillion miles.
B)
A unit of distance equal to the average distance from Earth to the Suntor
93 million miles.
A unit of distance equal to the size of the Milky Way Galaxy or 100,000
light years across
D)
A unit of time that is equal to the amount of time it takes light to travel
from the Sun to Earth,
Answers
Answer:
B
Explanation:
The correct option should be B.
The Astronomical Unit, AU, is a measurement unit for length in general astronomy and represents the mean or the average distance of the sun from the earth.
Mathematically, in astronomy,
1 astronomical unit = 150,000,000 km
But then, 1 km = 0.621371 mile
Hence,
150,000,000 km = 150,000,000 x 0.621371 miles
≈93,000,000 miles
Therefore, 1 astronomical unit can also said to be approximately equal to 93,000,000 miles.
The correct option is B
8. In chickens, brown feathers are dominant over red feathers. Suppose we cross two heterozygous chickens.
Draw the punnett square and list the genotypes and phenotypes of the offspring.
I
Genotypes of offspring:
Phenotypes of offspring:
Plz help me
Answers
Answer:
Crossing two chickens heterozygous for the trait feather color, when brown feathers are dominant over red feathers, will produce offspring with brown and red feathers in a brown:red phenotypic ratio of 3:1.
Explanation:
Knowing that in chickens brown feathers are the expression of the dominant allele (B) and the recessive allele is red (b), crossing two heterozygous individuals (Bb) will result in offspring that are likely to have brown or red feathers.
The cross can be represented by a Punnett Square:
Bb X Bb cross
alleles B b
B BB Bb
b Bb bb
Where the result is:
Genotypes:
Bb, 50% BB, 25% bb, 25%Phenotypes:
Brown feathers, 75% Red feathers, 25%.In this case, the probability of having brown or red feathers is 3:1.
Diarrhea is defined by loose, watery stool (poop.) Diarrheal diseases kill millions of people worldwide every year. Describe how a diarrheal disease might lead to death.
Answers
Answer:
dehydration.
Explanation:
the body is loosing more fluid than it is able to keep in and extreme cases result in death
Four substances are involved in both photosynthesis and cellular respiration. They are sugars, water, oxygen, and carbon dioxide. Describe what happens to these four substances during photosynthesis
Answers
Answer:
Explanation:
Photosynthesis is a light catalyzed chemical reaction that occurs in nature by all plants.
The process involves the reaction between carbon dioxide and water in the presence of sunlight.
This in turn produces glucose and oxygen gas.
The reaction expression is given as:
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
So, food is produced at the end of the reaction in form of glucose. In terms of energy, light energy is transformed into chemical energy stored in glucose.
Please needed as soon as possible thank you!
Answers
Answer:
hemopoiesis
It doesn't protect internal organs. All the others are functions of the skeletal system
Answer:
I think it is B)
production of blood-forming hormones.
Explanation:
All the other ones are functions of the skeletal system.
True or False. Pepsin digests cellulose.
Answers
Answer:
true
Explanation:
Long ago, the tree of life was seen as having five branches.
True or False?
Answers
Answer:
false, hopefully iss right
Which two parts of sedimentary rocks formation include the breakdown and carrying away of existing rock
Answers
Answer:
weathering
erosion
Explanation:
Weathering can be explained as the
breaking down of rocks as well as minerals or dissolving it on the surface of the earth. After the rock has been broken down then the bits of the rock can be transported away in a process known as " Erosion". The agents of
weathering and erosion could be water, salt, animal as well as plants.
It should be noted that the parts of sedimentary rocks formation that include the breakdown is weathering while the parts of sedimentary rocks formation that include carrying away of existing rock is erosion.
Answer:
weathering
and
erosion
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Why do the northern United States get more snow than the southern states?
A) Because there are colder temperatures in the winter months in the northern states
B) Because there are colder temperatures in the winter months in the southern states
C) Because there are warmer temperatures in the summer months in the northern states
D) Because there are warmer temperatures in the summer months in the southern states
Answers
Answer:
it a
Explanation:
i did it
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Three chairs were rolling across a flat office floor. The blue and red chairs are the same mass, and they have more mass than the yellow chair. Each chair was hit by another chair, but not from the same direction. Use the information in the diagram to answer.
Answers
Answer:
The answer is A
Answer:
answer is A hope it helps
What did Bill climb to get out of the Nye Lab?
Answers
Answer:I think it is A DNA molecule 5
sorry if I am wrong
Answer:
DNA
Explanation:
i think