Answer:
Mutation, fertilization, meiosis are different mechanisms by which changes can occur in the genome.
Explanation:
There are several process which is responsible for causing change in the genome of the species which results in the evolution of that species. Some of these processes are:
1. Mutation: In mutation, some nucleotide sequences get change and this change can occur due to frameshift, addition, deletion or any other process. This change in nucleotide can be seen in phenotype and helps in the evolution of the species.
2. Fertilization: During fertilization mixing of the genome of two individual takes place which results in producing a genetically distinct offspring which contains variation. So as the offspring is genetically different it can contain new alleles that can help the individual to survive in the changing environment.
Two mechanisms or vehicles through which genetic change occurs are;
Mutation and Gene flowMutation occurs when there is a mistake in the DNA sequence of an organism. When an egg and a sperm bearing the faulty DNA sequence mate, a mutated organism is formed.
A standing genetic variation is formed through mutation because of the differences in the organisms of a population.
Phenotypes that indicate the physical appearance of organisms change during mutation.
Gene flow is another channel for genetic change. It occurs when two populations with different allele frequencies unite in the same environment and then assume similar allele frequencies.
When mating occurs, the allele frequencies of these populations can assume similarity.
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Which of the following would be a function of the nucleic acids?
A.
They are used to store and transmit genetic information
B.
They are used to store energy
C.
They are used for structural purposes
D.
They are used to insulate the body
Nucleic acids include DNA and RNA, are the genetic material in living things. The main function of the nucleic acids is to store and transmit the genetic information. Thus, the correct option is A.
What are Nucleic acids?Nucleic acids are biopolymers, which are essential to all known forms of life. They are composed of nucleotide polymers. Nucleotides are the monomers of nucleic acids which are made up of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base. The two main classes of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
Nucleic acids play essential roles in all cells and viruses. The main function of nucleic acids involves storage and expression of genetic information in organisms. Deoxyribonucleic acid (DNA), encodes the information cells need to make proteins.
Therefore, the correct option is A.
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The lumper potatoes that were grown in Ireland during the 1800s were essentially clones of one another. They all had the same genetic makeup. So, when a potato blight disease began infecting the potatoes, it spread to all potatoes equally. How could greater genetic diversity have lessened the devastation of the potato blight?
The question has options that are given as below:
A. Some potatoes would be more likely to have a genetic resistance to the disease and survive. B. The potatoes would have been able to trade genes so that they could survive the disease. C. More of the potatoes would have been edible varieties. D. None of the potatoes would have been infected by the disease.
Answer:
The correct answer is - A. Some potatoes would be more likely to have a genetic resistance to the disease and survive.
Explanation:
Genetic resistance is the capability or ability of some individual organisms of a population or species have to adapt the environmental or genetic changes and survive while other organisms of species are not able to do the same.
In this case, some of the potatoes more likely to show genetic resistance to the disease and condition and survive from the devastation of the potato blight
Discuss why liquid water can exist on Earth.
please help me out here
A bacterium, containing one circular DNA chromosome, undergoes four rounds of replication. How many new strands of DNA would result?
Answer:
The correct answer is 32 strands.
Explanation:
In bacterium, DNA replication is bidirectional which means it takes place in both directions. The origin of replication starts the replication, it is a specific sequence of nucleotides. Each strand of circular DNA acts as a parent strand to replicate its complementary new strand, resulting in two new DNA strands, one parent strand, and one new synthesized strand. So after the first round of replication, there are 4 strands formed.
Similarly, during the second round of replication each of the four strands will be synthesized lead to a total of 8 strands in the same manner. So by the same process in 3rd round will lead to 16 new strands and by the fourth round of replication 32 strands will be synthesized.
Thus, the correct answer is 32 strands.
Trees produce energy from sunlight. Animals eat tree leaves for energy. This is an example of ____________ . *
A.) Food web
B.) Food chain
Answer: A
Explanation:because i said so
Which of the following correctly describes the outcome of meiosis?
Answer:The cell produced at the end of meiosis contained half of the number of chromosomes as the parent cell
Explanation:hope this helps and happy hallowen :D
Answer:
A. Four haploid daughter cells that are genetically different.
Explanation:
Which of the following correctly matches an organelle and its functions?
Lysosome .... movement
O
Mitochindria..... photosynthesis
Central vacuole .... storage
Nucleus .... cellular respiration
O
Ribosomes ..... manufacturer of lipids
In a cell, all the organelles work together to carry out
A) diffusion
B) active transport
C) information storage
D) the life processes for the cell
All the organelles in a cell work together to carry out the life processes for the cell.
ORGANELLES:
Organelles are organ-like structures found within a cell. They perform specific functions in the cell.For example;
Mitochondria is the site of energy productionRibosomes are site of protein synthesisVacuoles aids in water regulation in a cell. Nucleus store the genetic material of a cellCell membrane gives the cell a definite structure and protects its content. Although, each organelle is function-specific but they all work hand in hand to fulfill all the life processes of that cell.Learn more at: https://brainly.com/question/3282684?referrer=searchResults
How environmental conditions influence modern history?
Plz it’s 7th grade science
Answer:
it helps future generations understand the impacts of humans and pollution on health.
Explanation:
As ecosystems move through the states of succession, the populations of organisms in them change. Which of the following describes the stage of succession likely to have the most species diversity?
Ill give brainless if correct
Answer:
B
Explanation: The mass, volume, and density would stay the same
Describe the path that air takes as it enters and passes through the human respiratory system
Answer: The pathway of air in the respiratory system starts with the external organs of the nose and mouth. Nose: Air is inhaled through the nostrils (and sometimes through the mouth) where it is filtered by the hairs and cilia to remove dust particles and moistened. The nasal cavity also moderates the temperature of the inhaled air.
Explanation:
What are the possible genotypes of the gametes?
Answer:
There are four possible combinations of gametes for the AaBb parent. Half of the gametes get a dominant A and a dominant B allele; the other half of the gametes get a recessive a and a recessive b allele. Both parents produce 25% each of AB, Ab, aB, and ab.
Explanation:
Describe the structure and function starch
Answer:
Starch is a carbohydrate. Carbs supply quick energy. Starches are a polysaccharide which are complex carbs. Its monomer is a monosaccharide
Explanation:
Starch: structure Starch is the storage polysaccharide of plants It is stored as granules in plastids (e.g. chloroplasts) and amyloplasts (small, membrane-bound organelles containing starch granules) Due to starch molecules being large polymers consisting of thousands of glucose monomers, starch takes longer to digest than glucose
What are nucleic acids responsible for?
Answer:
The functions of nucleic acids have to do with the storage and expression of genetic information. Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins. A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis.
Explanation:
Nucleotides are important as they form the building blocks of nucleic acids, such as DNA and RNA. Nucleotides are made up of 3 parts. The first is a distinct nitrogenous base, which is adenine, cytosine, guanine or thymine.
EMERGENCY! PLEASE ANSWER ASAP!
Answer:
they suck up liquid
Explanation:
they drink the other bugs blood (cool huh)
proteins that act as catalysts in biological reactions
A. glucose
B. enzyme
C. ATP
D. molecule
PLS ANSWER ITS URGENT
The cell produces energy in the
Please help
Answer:
Mitochondria
Explanation:
Answer:
In the mitochondria where atp is produced
Explanation:
What two important properties do all lipids share?
Answer:
all lipids repel water. all lipids are made primarily of carbon and hydrogen
Explanation:
i hope this helps:)
How does water rise from the roots of a tree to the very top?
Answer:
Explanation:
" Water travels from a tree's roots to its canopy by way of this conductive tissue. In hardwoods, water moves throughout the tree in xylem cells called vessels, which are lined up end-to-end and have large openings in their ends. In contrast, the xylem of conifers consists of enclosed cells called tracheids."
Why do we rely on lactic acid fermentation only as a temporary energy source?
Answer:
This usually happens when there is not enough oxygen in the body, so lactic acid fermentation provides a way to get ATP without it. The process relies on stored energy sources such as sugars or starches, which it can break down to make simpler molecules and energy. ... Lactic acidosis usually occurs because of exercise.
The process relies on stored energy sources such as sugars or starches, which it can break down to make simpler molecules and energy. Lactic acidosis usually occurs because of exercise.
What is lactic acidosis?Lactic acidosis refers to lactic acid build up in the bloodstream. Lactic acid is produced when oxygen levels become low in cells within the areas of the body where metabolism takes place.
The symptoms of lactic acidosis include abdominal or stomach discomfort, decreased appetite, diarrhea, fast, shallow breathing, a general feeling of discomfort, muscle pain or cramping.
Lactic acidosis occurs when lactic acid production exceeds lactic acid clearance. The increase in lactate production is usually caused by impaired tissue oxygenation, either from decreased oxygen delivery or a defect in mitochondrial oxygen utilization.
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For which of the following reasons do small, isolated islands have a greater rate of
species extinction than larger, less isolated islands?
Answer:
Larger islands that are large and close to the mainland are shos lower rate of extinction due to the fact that the species present have more space so there will be more resources available in comparison to smaller islands where limited space and limited resources available.
Extinction is greater on islands isolated due to the unlikelihood of immigration and as it is opposite to the island close to the mainland and competition is more in isolated islands.
Lack of immigration, lower space and resources are the reasons small isolated islands have a greater rate of extinction.
Large islands have large space for the growth of an organism as well as more resources which lowers the competition between organisms while on the other hand, small islands have lower space for growth and low amount of resources which causes to more competition leads to greater rate of extinction so we can conclude that lack of immigration, lower space and resources are the factors that affect the rate of extinction.
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all livings things are?
the single main root is called the...
Answer:The first root that germinates from the seed is called‘radical’ The radical develops into single prominent root called as ‘primary or main root’ It is the strongest and grows vertically downwards due to gravitation and deep into the soil Several branches arise from the main tap root known as lateral or secondary roots
Explanation:
Answer:
the taproot
Explanation:
what of the following are functions of lipids? choose three correct answers
You didn't give any of the options so i'm gonna assume
forming waxy leaf coverings
storing energy in fat cells
forming cell membranes
Which is one piece of evidence of seafloor spreading?
fossil material
continent material
drilled core samples
ocean water samples
One of the evidence of seafloor spreading is continent material.
Seafloor spreading can be regarded as geologic process which involves the splitting apart of tectonic plates.
This plates serves as large slabs of Earth's lithosphere and this spreading as well as some activities is been done by mantle convection.
One of the evidence of this spreading is continent material which could be any Continental mass that can rise.
We can conclude that one of evidence of seafloor spreading is
continent material.
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Answer:b
Explanation:
What would be the most likely effect of a wildfire that burned a large area of a forest?
Why should you never smell a chemical directly?
A. Many chemicals have no smell.
O B. All chemicals smell the same.
C. You cannot learn anything by smelling.
D. Some chemicals can hurt your windpipe.
Answer:
D
Explanation:
Some chemicals can hurt your windpipe
Answer:
D
Explanation:
by directly smelling something you are ingesting tiny particles of it, which is why directly smelling a chemical is a bad idea.
How does population density differ from population size?
a.
Population size takes all organisms into account, while population density only takes specific age groups of the population into account.
b.
Population size is the total number of organisms, while population density is the total number of organisms within a given area.
c.
Population size is the total number of organisms within a given area, while population density is the total number of organisms of a specific age.
d.
Population size is the total number of organisms of all species, while population density is the total number of organisms of a specific species.
How does population density differ from population size?
a.
Population size takes all organisms into account, while population density only takes specific age groups of the population into account.
b.
Population size is the total number of organisms, while population density is the total number of organisms within a given area.
c.
Population size is the total number of organisms within a given area, while population density is the total number of organisms of a specific age.
d.
Population size is the total number of organisms of all species, while population density is the total number of organisms of a specific species.
Population size is the number of individuals in a population. Population density is the average number of individuals per unit of area or volume.
Answer:
b
Explanation:
