Answer:
Gene therapy is designed to introduce genetic material into cells to compensate for abnormal genes or to make a beneficial protein. If a mutated gene causes a necessary protein to be faulty or missing, gene therapy may be able to introduce a normal copy of the gene to restore the function of the protein.
How are stem cells nurtured to form a tissue/organ?
Answer:
Stem cells have the capacity to proliferate and to differentiate into relatively mature cells of various types. Embryonic stem cells can become any organ in the body and do so when implanted into a blastocyst. In principle, then embryonic stem cells could be used to replace any organ in the body.
Have a great day! :D
Câu 12
Phát biểu nào sau đây về giun đũa là đúng?
Answer:
A es la respuesta
Explanation: Espero que esto haya ayudado :)
The extensor carpi radialis longus inserts on which of the following bones?
Answer:
c. 2nd metacarpal
Explanation: is correct edg
a) An F1 x F1 self-fertilization gives a 9:7 phenotypic ratio in the F2. What phenotypic ratio would you expect if you test-crossed the F1?
b) An F1 x F1 self-fertilization gives a 9:3:4 phenotypic ratio in the F2. What phenotypic ratio would you expect if you test-crossed the F1?
c) An F1 x F1 self-fertilization gives a 15:1 phenotypic ratio in the F2. What phenotypic ratio would you expect if you test-crossed the F1?
According to the gene interaction that is operating in the trait determination, the phenotypic ratios of the progeny produced when test-crossing a dihybrid are: a) 4:12, b) 8:8, and c) 12:4
-------------------------
To answer these questions, the first thing you should notice by looking at the phenotypic ratios provided, is that there are two genes involved in the trait, and there is interaction between them.
Let us assume diallelic genes. A and B are the dominant alleles, while a and b are the recessive alleles.
In the three cases (a, b, and c), F1 individuals are dihybrid. Their genotype is AaBb.
Observing the altered phenotype proportions of the offspring can reveal which interaction is operating in the trait determination.
We can use the phenotypic ratio to determine the interaction, so:
9:3:3:1 ⇒ No interaction9:7 ⇒ Double Recessive epistasis 9:3:4 ⇒ Recessive epistasis15:1 ⇒ Dominant duplicate genes.When talking about epistasis, we are referring to an interruption.
The epistatic gene can alter, influence, or suppress the expression of a hypostatic gene.
When there is only one epistatic gene in h0m0zyg0us recessive state, the interaction is known as recessive epistasis. This gene supresses the expression of the other gene. Phenotypic ratio 9:3:4.In double recessive epistasis, both genes are epistatic when they are in a h0m0zyg0us recessive state. This is, in the h0m0zyg0us recessive state, either of the genes will inhibit the expression of the other gene. And vice-versa. Phenotypic ratio 9:7.In Duplicate gene action, there are two genes involved in the expression of a phenotype, and the presence of at least one dominant allele is enough to produce the dominant phenotype. Phenotypic ratio 15:1.
So now, let us make the test-cross.
Note: You will see that the cross is the same in the three cases, but the phenotypic ratio changes according to the interaction.
Cross) dihybrid individual with h0m0zyg0us recessive one
Parental) AaBb x aabb
Gametes) AB, Ab, aB, ab ab, ab, ab, ab
Punnett square) AB Ab aB ab
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
F2) Phenotypic ratio
***Double recessive epistasis ⇒ 4:12
4/16 dihybrids12/16 heter0zyg0us for one gene and h0m0zyg0us recessive for the other gene.Both genes in recessive state inhibit the expression of the trait.
***Recessive epistasis ⇒ 8:8
In h0m0zyg0us recessive state, Gene A inhibits the expression of B.
8/16 AaBb or Aabb → The trait coded by B or b is being expressed8/16 aaBb or aabb → The trait coded by B or b is inhibited by aa.***Duplicate gene action ⇒ 12:4
Only one dominant allele, either A or B, is enough to express the trait.
12/16 AbBb, Aabb, or aaBb 4/16 aabb → No dominant allele, no trait expressed.Phenotypic ratios:
a) 4:12 = 1:3
b) 8:8 = 1:1
c) 12:4 = 3:1
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Write about an invention that you think the world would be better off without. Why do you believe it is such a terrible invention? What harm has it caused mankind?
Gun
Explanation:
it has caused many to die, yes the government brought that to help with security but it has gotten into Tue hands of those that have no value for human life. Take the case of the Boko harm in surgery in Nigeria, all of them are armed with Ak47's and they use it to kill innocent Nigerians not only that there are series of cases of accidental shootings AND that's how a life is lost. You can't really argue with me considering the fat that life is priceless. thank me later
both members of a pair of chromosomes are inherited from the parents.
Answer:
yes that's true
Explanation:
pls mark brainliest
A cell is grown in a medium with radioactive amino acids for five minutes. The radioactive amino acids are able to be transported into the cell and assimilated into the proteins that are being assembled. After the cells are removed from the radioactive culture, the level of radioactivity is monitored at different time points. It is found that the area of the cell with the highest radioactivity after five minutes is the ribosomes on the rough endoplasmic reticulum. As time progresses, which statement best explains where the level of radioactivity will be highest in the next five minutes?
A) The radioactivity will be highest in the mitochondria, as the proteins made by the cell will need to be modified using ATP.
Eliminate
B) The radioactivity will be highest in the nucleus as the proteins made at the ribosome will be shipped to the nucleus to replicate the DNA.
C) The radioactivity will be the highest outside of the cell because the endoplasmic reticulum transports proteins directly to and through the cell membrane.
D) The radioactivity will be highest in the Golgi apparatus, as proteins made on the rough endoplasmic reticulum are transported to the packaging center prior to leaving the cell.
Answer:
It’s D ,I got it right on USAtestprep
Explanation:
The correct option for this answer is D, which signifies that the radioactivity will be highest in the Golgi apparatus, as proteins made on the rough endoplasmic reticulum are transported to the packaging center prior to leaving the cell.
What do you mean by Radioactivity?Radioactivity may be defined as a spontaneous process that involves the emission of radiation in the form of particles or high-energy photons resulting from a nuclear reaction.
The path of protein transport determines the level of radioactivity in this experiment.
First, the radioactivity is found highest in the ribosomes of ER, then the proteins are transported to the region of the Golgi apparatus by an anograde pathway and reflect in radioactivity.
Therefore, it is well described above.
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how many type of solid? are there name and define them
Answer:
there are 2 types of solid.
crystalline and amorphous
Explanation:
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions
In condensed matter physics and materials science, an amorphous or non-crystalline solid is a solid that lacks the long-range order that is characteristic of a crystal
please mark me as brainlist
What organism are tertiary (3rd level) consumers
Answer:
Third-level consumers are any organisms big enough to obtain energy by feeding off lower-level consumers. These are also called tertiary consumers. For example, in a forest ecosystem, snakes eat toads. Heron and large fish, such as bass and walleye, consume smaller fish, frogs and crayfish.
Explanation:
Answer:
The larger fishes like tuna, barracuda, jellyfish, dolphins, seals, sea lions, turtles, sharks, and whales are tertiary consumers Explanation: They feed on the primary producers like phytoplankton and zooplankton, as well as secondary consumers like fish, jellyfish, as well as crustaceans.
What is an advantage of being multicellular?
-having lower energy requirements
-producing offspring that mature quickly
-having a high tolerance for extreme conditions
-being more adaptive to the surroundings
4th- being more adaptive to the surroundings
True or false if blood is pumped by the brain?
PMTA are the 4 stages of...
Answer:
premarket tobacco application (PMTA) is an application that must be reviewed and approved by the Food and Drug Administration before a new tobacco product can be legally marketed in the United States.
Explanation:
How is cellular respiration dependant on an animal's respiration rate?
Explanation:
Every cell in an animal requires oxygen to perform cellular respiration. Cellular respiration is the process by which animals take in oxygen and exchange it for carbon dioxide and water as waste products.
Answer:
Every cell in an animal requires oxygen to perform cellular respiration. Cellular respiration is the process by which animals take in oxygen and exchange it for carbon dioxide and water as waste products.
Removal of waste products in the body is called _____.
It's called excretion.
easy one - giving brainly if correct.
Answer: is going to be B
There are a group of 13 related species of birds on a group of about 20 isolated oceanic islands. These species are grouped into four oubgroups with subgroup 1 evolving to species), subgroup 2 evolving second (1 species), subgroup 3 evolving third (5 species), and subgroup 4 evolving last (6 species. I subgroup 4 evolved most recently, then which the following statements is the most logical prediction?
a) The genomes of subgroup 4 should be more similar to each other than to the genomes of subgroup 3.
b) The chances of hybridization between two subgroup 4 species should be less than the chances of hybridization between two subgroup 3 species
c) The species of subgroup 4 should share tower anatomical homologies with each other than they share with the species of subgroup 4.
d) Subgroup 4 should be limited to the six islands that most recently emerged from the sea.
Answer:
C
Explanation:
How does acid help digestion
Answer:
When digesting food, acids in your stomach help break down the food particles to easily travel into your intestines!
Suppose that a cell is unable to replicate its DNA. Which of the following would NOT be present in this cell? ******ONLY ANSWER IF YOU KNOW THE ANSWER GIVING BRAINLIEIST******
Answer:
sister chromatids
Explanation:
Suppose that a cell is unable to replicate its DNA, the structure that will not be present in the cell is sister chromatid.
What is sister chromatid?Sister chromatid refers to replicated chromosome that are genetically identical.
Prior to every cell division, a cell must replicate its DNA in order to have an even distribution of genetic material in the daughter cells.
The result of DNA replication is sister chromatids, which carry individual identical DNA.
Therefore, if a cell is unable to replicate its DNA, the structure that will not be present in the cell is sister chromatid.
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Which statement describes correctly why cells are small?
-when cells are small, the movement of food and waste can be efficiently handled by the cell membrane.
-when cells are small, they can easily work together to form tissue.
-when cells are small, their internal parts can support the cell membrane.
-when cells are small, they can adapt their shape more easily to fulfill their specific function.
True or False
inherited genetic variations are caused and influenced by environmental factors only
Answer:
False, it can also be caused by mutations.
Which of the following statements best compares reproduction in viruses with reproduction in single-celled protists? no links please
Viruses require the cellular machinery of host cells to reproduce; single-celled protists reproduce on their own. Therefore, the correct option is (C).
Viruses require the cellular machinery of host cells to reproduce; single-celled protists reproduce on their own. The main difference between reproduction in viruses and single-celled protists lies in their reproductive processes. Viruses are obligate intracellular parasites that lack the cellular machinery required for replication. They rely on infecting host cells and hijacking their machinery to reproduce and create new viral particles. In contrast, single-celled protists are independent organisms capable of self-replication through various mechanisms such as binary fission, budding, or spore formation. They do not need a host cell for their reproductive processes. This fundamental distinction highlights the unique strategies employed by viruses and protists in propagating their species.Therefore, the correct option is (C).
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Question:
Which of the following statements best compares reproduction in viruses with reproduction in single-celled protists?
A. Viruses reproduce by releasing spores; single-celled protists reproduce by dividing in half.
B. Viruses require large colonies to reproduce; single- celled protists reproduce as individual cells.
C. Viruses require the cellular machinery of host cells to reproduce; single-celled protists reproduce on their own.
D. Viruses form haploid gametes when they reproduce; single-celled protists form diploid gametes when they reproduce
According to urban anomie theory the impersonal nature of city life extends to situations that do not call for social involvement. Please select the best answer from the choices provided T F.
Answer:False
Explanation: right on Edge
The statement "According to urban anomie theory, the impersonal nature of city life extends to situations that do not call for social involvement" is true, as urban anomie theory suggests that the impersonal nature of city life leads to the breakdown of social bonds.
What is urban anomie theory?According to this theory, the fast pace of urban life, the diversity of populations, and the emphasis on individual achievement can lead to a weakening of social ties and a breakdown of social norms and values. As a result, individuals may feel disconnected from others and from society as a whole, leading to a sense of alienation and a lack of meaning in their lives. This sense of normlessness and detachment can extend beyond situations that require social involvement, such as interactions with neighbors or participation in community events, to other aspects of daily life.
Hence, the statement "According to urban anomie theory, the impersonal nature of city life extends to situations that do not call for social involvement" is true.
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What kind of fingerprint pattern do they have loops or whorls?
Answer:
loops
Explanation:
.......................
DNA profiling is also called DNA fingerprinting. A common misconception about DNA fingerprinting is that the analysis has to do with actual fingerprints. Explain one similarity and one difference between a human being’s pattern of bands on an electrophoresis gel and a human fingerprint.
Answer:
Explanation: Electrophoresis displays the entire DNA sequence, whereas fingerprinting allows you to quickly identify someone. But they have one thing in common: they are both so distinctive that it is nearly impossible for two persons to have the same fingerprint/DNA sequence.
how do plants and snails affect the CO2 and O2 gases in an aquatic environment
Answer:
Water plants will absorb carbon dioxide for photosynthesis, and some plants will also absorb ammonia (as a source of nitrogen for growth). Aquatic animals like fish and snails absorb oxygen and release carbon dioxide directly into water through specialized structures like gills.
Explanation:
which statement about human blood vessels is correct?
Which statement about biodiversity in coral reefs is accurate?(1 point) *EARTH SYSTEMS*
A) More new species have evolved in coral reef habitats than in most other types of habitats.
B) Species that evolved in coral reef habitats always stay in those habitats.
C) Coral reefs have much biodiversity, but most species that live there migrated from other habitats.
D) Most organisms that live in coral reef habitats are zooxanthellae.
The statement 'more new species have evolved in coral reef habitats than in most other types of habitats.' is accurate. A coral reef is a hotspot of biodiversity.
A coral reef is a marine ecosystem composed of organisms (i.e., corals) that form a wall together (i.e., reef-building corals).
These reefs consist of many colonies of coral polyps, which held together by a calcareous material (i.e., calcium carbonate)
A coral reef is a hotspot of biodiversity because there are many different species that live and evolved in this type of habitat.
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Answer:
'more new species have evolved in coral reef habitats than in most other types of habitats.'
Explanation:
trust
Hormones perform important functions within the reproductive system. During puberty, secondary sex characteristics develop. Which hormone is responsible for the development of these characteristics in the female? estrogen progestin progesterone testosterone.
Answer:
Estrogen
Explanation:
Estrogens are a group of hormones that play an important role in the normal sexual and reproductive development in women.
Estrogen is responsible for the development of these characteristics in the female. Therefore, option (A) is correct.
What is Estrogen?Estrogen, also known as oestrogen, is a class of sex hormone that is responsible for the growth and regulation of the female reproductive system as well as secondary sex characteristics. Estrone, estradiol, and estriol are the three primary endogenous estrogens that are responsible for the majority of the hormone activity associated with estrogen.
The growth, development, and physiological functioning of the human reproductive system are all controlled by estrogen. In addition to affecting the neuroendocrine and skeletal systems, this hormone also affects the adipose and cardiovascular systems. Estrogen is a vital component of the male and female reproductive systems and is primarily manufactured by the ovaries in females and the testes in males.
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is deletion a point mutation
What can plant reproduction tell us about the evolution of plants?
Explanation:
Reproduction is important in plants to produce their progeny and to maintain its population. Plant reproduction helps to maintain its birth rate and sustain the ecosystem. Reproduction helps to acquire new variations and adapt to the environment with the most desirable characters.
