30 POINTS!!

Using radioactively labeled DNA probes in studies of heredity makes it
possible for a scientist to:


A. study the inheritance of traits that are not seen as a phenotype.

B. make many more copies of a target gene with PCR.

C. produce clones with DNA from two different species.

D. cause new mutations that will not add variation to a species.


Answer it’s right plzzzzzz

Answer:

True.

Explanation:

Researchers and scientists are not making any progress in treating or curing AIDS because the virus incorporates itself into the host cell's DNA and the medication is unable to reach that place so the virus is safe from the medication and remains in the host cells. This diseases can't be cure but can be prevented of spreading further in the body through medication such as antiretroviral therapy (ART).

Answer:

the flowers

Explanation:

because the flowers are the parts that turn into seed

Answer:

I am pretty sure its True

true

Explanation:

air pressure always change on earth have gravity

Answer.

✔ xylem

✔ phloem

Explanation:

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Answer.

✔ xylem

✔ phloem

Explanation:

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The stages of DNA bases in a molecule can determine the order of amino acids in protein molecules. Groups of three bases called triplets represent different amino acids. This is the basis of the genetic code . A sequence  of bases (genetic information) on DNA that codes for a protein is called a gene

Protein synthesis is the generation of proteins by cells that employ DNA, RNA, and different enzymes.

It generally includes transcription, translation, and post-translational events, such as protein folding, modifications, and proteolysis the process of protein synthesis.

the mRNA contains the sequence of nucleotides transcribed from the DNA that defines the sequence of amino acids that a synthesized protein will have.

In mRNA, codons are triplets of nitrogenous nucleotides that code for amino acids and using ribosomes mark the beginning and end of protein synthesis.

Therefore, in contrast to mRNA codons, anticodons are triplets of nucleotides found in transfer RNA (tRNA). The linking of amino acids to the polypeptide chain being produced is carried out by tRNA. 

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Answer:

Poisson Process. A Poisson Process is a model for a series of discrete event where the average time between events is known, but the exact timing of events is random.

Answer:

The Earth and it's geography

Explanation:

Answer  Geologist Study fossils and rocks and other minerals of the earth

Explanation:

I just know since one of my friends is one

Answer:

Mutations are changes to an organism's DNA and are an important driver of diversity in populations. Species evolve because of the accumulation of mutations that occur over time. ... This mutation has introduce a new allele into the population that increases genetic variation and may be passed on to the next generation.

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Answer:

What did researchers learn from terra preta?...  Because terra preta is loaded with so-called bio-char -- similar to charcoal -- it also can pull substantial amounts of carbon out of the increasing levels of carbon dioxide in the Earth's atmosphere, helping to prevent global warming.

How is bio-char different from the traditional Amazonian method of creating terra preta?  Terra preta owes its characteristic black color to its weathered charcoal content, and was made by adding a mixture of charcoal, bone, broken pottery, compost and manure to the low fertility Amazonian soil. ... Terra preta soils were created by farming communities between 450 BCE and 950 CE..  

The BBC's Unnatural Histories presented evidence that the Amazon rainforest, rather than being a pristine wilderness, has been shaped by man for at least 11,000 years through practices such as forest gardening and terra preta.

Terra preta is a type of dark, fertile soil found in the Amazon rainforest that is believed to have been created by indigenous people thousands of years ago. Researchers have learned from terra preta that it contains a high level of carbon, along with nutrients such as nitrogen, phosphorus, and potassium.

Terra preta, or "black earth," is a type of dark, fertile soil found in the Amazon rainforest that is believed to have been created by indigenous people thousands of years ago. Scientists have studied terra preta to understand its unique properties and how it was created. Terra preta is a type of anthropogenic soil, which means that it was created by human activity rather than natural processes. It is believed that the indigenous people of the Amazon region created terra preta by adding biochar to soil along with other organic materials such as bones, shells, and manure.

Hence, researchers have learned from terra preta that it contains a high level of carbon along with nutrients such as nitrogen, phosphorus, and potassium.

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Answer:

A

Explanation:

they are nonrenewable meaning they aren't renewable

Answer:

b

Explanation:

oxygen in air

and atmosphere

Answer:

Explanation:  

Answer:

C is the answer

Explanation:

it shows the genotypes and phenotype of the parents and offspring

Answer:

B. Stomata

Explanation:

any of the minute pores in the epidermis of the leaf or stem of a plant, forming a slit of variable width which allows movement of gases in and out of the intercellular spaces.

Answer:

hmm b

Explanation:

Answer:

false it is regulated by the government

Explanation:

Meiosis has evolved to produce the greatest variation of offspring.

Meiosis is a type of cell division that occurs in eukaryotic cells, such as those in animals and plants, to produce reproductive cells (gametes) that have half the number of chromosomes as the parent cell.

During meiosis, chromosomes pair up and  genetic material through a process called crossing over, creating genetic diversity among the gametes. This diversity increases the chances that at least one offspring will be better suited to its environment and increase the survival chances of the species.

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Answer:

C; maternal mitochondrial mutations are inherited by all of a mother's offspring

Explanation:

Answer:

earth revolution around the sun

Answer: setting

Explanation:

Answer:

it is a i just did it

Explanation:

Answer:

B - the second option is the correct answer

Explanation:

I'm right trust me

Answer:

It is carried to the leaf by the water being absorbed by the roots that is ik the soil and transported into the leaves also known as xylem

Answer:

B. Viruses

Explanation:

Viruses are not made out of cells, they can't keep themselves in a stable state, they don't grow, and they can't make their own energy. Even though they definitely replicate and adapt to their environment, viruses are more like androids than real living organisms.

Answer:

D. Conifers and Grasses spreading their pollen with the wind.

Explanation:

Let's start with what mutualism is. Mutualism is when both parties of a relationship benefits. So, when you go to the doctor, this would be mutualism. The doctor is getting paid, and you are getting healthy. Both sides benefit!

Now let's go thrugh out examples.

Moths drinking nectar and pollinating night blossoming flowers: The moths get fed (nectar), and the plants get pollinated (their whole purpose). Both sides benefit.

Bees drinking nectar and pollinating many angiosperms of food supply: This option might seem confusing because of the term angiosperm. I promise it isn't! Ignore angiosperm. Bees are drinking nectar -> they benefit. The other thing is getting pollinated. All plants like getting pollinated, no matter their fancy name. So both sides benefit!

Beekeepers maintaining colonies of bees and moving them to different farms and orchards: This one might also have been hard, because it requires sme critical thinking. Let's look at the beekeepers first. Beekeepers make money off of honey when they have bees, so they benefit. But do bees benefit in this relationship? Yes! Bees like having lots of plants to pick from to get their pollen. By being moved to an area with lots of plants, they get more pollen, so they benefit!

Now, we know the last one HAS to be right. But let's go through it anyways.

Conifers and Grasses spreading their pollen with the wind: Right away we know the conifers and grasses are benefitting. They want to spread their pollen- why else would they do it? But, to be mutualism, another party has to be benefitting. In this equation, there is no other party. Maybe you thought the win, or maybe you thought of the fields. What are they getting out of this relationship? Nothing. This is not mutualism.

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DNA helicase is the enzyme that breaks the hydrogen bonds which holds the two DNA strands together during DNA replication.

During replication of DNA , the enzyme DNA helicase separates the two strands of DNA and causes the breakdown of hydrogen bonds between the two DNA strands which leads to separating of the DNA double helix into two individual strands which make easier to copy it.

In conclusion, DNA helicase is the enzyme that breaks the hydrogen bonds.

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Nitrogenous bases basically pairs with bases that are complementary. The correct option is B.

Nucleobases, also referred to as nitrogenous bases or purely bases, are nitrogen-containing biological molecules that form nucleosides, which are then constituents of nucleotides, all of which are the basic building boxes of nucleic acids.

A set of 5 nitrogenous bases is used to build nucleotides, which then in results nucleic acids such as DNA and RNA.

These bases are critical because their sequencing in DNA and RNA is how information is stored.

A base pair in DNA are complementary to each other. Under normal conditions, the nitrogen-containing bases adenine (A) and thymine (T) pair, whilst also cytosine (C) and guanine (G) pair.

The structure of DNA is formed by the binding of these base pairs.

Thus, the correct option is B.

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Answer: i’m pretty sure that it does contain carbon atoms

Explanation: most organic compounds contain a significant amount of carbon

Answer:

True

Explanation:

All living organisms are built up with carbon molecules

Tay-Sachs disease is caused by mutations in the HEXA gene and inheritance is autosomal recessive . The HEXA gene gives the body instructions to make part of the beta-hexosaminidase A enzyme, which is needed to break down a substance called GM2 ganglioside.

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Answer:

Frameshift mutation

Explanation:

A frameshift mutation is a genetic mutation caused by insertions or deletions that shift the whole sequence.