30. Why was the paddlefish selected for study?

Answers

Answer 1
They needed an evolutionary relative of tectalic to study its DNA. It has a fleshy fin that may be similargenetically to the Tectalic fin/arm.

Related Questions

How are gene and protein sequences used to classify organisms?

Answers

Answer:

"Genes code for proteins and each organism has different genes."

Explanation:

"Sequences of genes are used to identify differences and similarities between organisms. So it can be used to identify related organisms, because they show differences between species.

DNA acts as set of instructions for building an organism, because it contains the genetic instructions to make for proteins. Genes are made of DNA and each one codes for a different protein. In that way, different types of organisms can all be differentiated through their genes.

This is because the translation of proteins from DNA is guided by a universal code. It means, the same codons codes for the same amino acid across all species."

What is the genetic material in the chromosomes of an animal's cells? *

Answers

Answer:

DNA is the hereditary material found in the nucleus of eukaryotic cells (animal and plant) and the cytoplasm of prokaryotic cells (bacteria) that determines the composition of the organism. DNA is found in the nucleus of every cell, and it is exactly the same in each cell.

Explanation:

please mark this answer as brainliest

ik your on a test a little secret

Answer:

Chromosomes are thread-like proteins present in both animal and plant nuclei. Protein and a single molecule of deoxyribonucleic acid make up each chromosome.

Explanation:

Explain why it is essential that decomposers are present in an ecosystem.​

Answers

Answer:

it is what breaks down dead plants and animals

Blank have a positive charge and are found in the blank

Answers

Answer:

Protons have a positive charge and are found in the nucleus

Explanation:

Answer:  Protons have a positive charge and are found in the nucleus

Explanation: hope this help

what can a scientist conclude about two sperate rock layers that hold ammonite fossils of the same species?

Answers

Answer:

that specis lived for a long time

The formation of a new community on land that has never had organisms grow on it before is known as

Secondary succession
Rebuilding
Biomagnification
Primary succession

Answers

Answer: Primary succession

Explanation:

The formation of a new community on land that has never had organisms grow on it before is referred to as the primary succession.

Primary succession takes place when there is no ecosystem that has existed before. It should be noted that the primary ecosystem is a slow process due to the fact that it starts on bare rock. This then provides a habitat which can be colonized. An example of primary succession is when there is eruption of volcanoes.

What are the 3 types of plate boundaries? Describe each.

Answers

Explanation:

Divergent boundaries -- where new crust is generated as the plates pull away from each other.

Convergent boundaries -- where crust is destroyed as one plate dives under another.

Transform boundaries -- where crust is neither produced nor destroyed as the plates slide horizontally past each other.

Pls help due today, would be greatly appreciated

Answers

Answer:

20. Genotypes is all bb, phenotype is all blue.

21. 50% TT 50% Tt genotypes, 100% tall phenotypes

Explanation:

To find the genotypes and phenotypes, we do our punnett sqaure by drawing a square, dividing it into 4 squares, putting our cross in and determining the genotypes of our offspring. Since blue eyes are recessive, they'll be represented by bb. Since tall plants are dominant, they're represented by Tt or TT. Capital letters are dominant while lowercase signifies recessive. Hope it helps :)

PLEASE HELP PLEASE PLEASE HELP ME WITH OUT

Answers

Answer:

The big B

Black Ginuea Pigs

Explanation:

Any uppercase letter when dealing with Punnett squares is automatically the dominant trait.

When You have at least one Uppercase the dominant trait is the one that shows.

It’s the big B. I hope this helps you

Can someone please help me here...

Answers

Answer:

hey how are u doing

Explanation:

answer D

What are the 5 levels of cell organization in a dog's body from simple to most complex?

Answers

Answer:

Level One: Cells

Level Two: Tissues

Level Three: Organs

Level Four: Organ Systems

Level Five: Organisms

Hope this helps. If you have any further questions please leave a comment below. Good luck!

who would win in fight an elephant or a rhino

Answers

Answer: rhino
Just because I said so

Answer:

elephant

Explanation:

Yeah a rhino is an aggressive animal but soo

Research shows that an elephant is the largest animals on earth u can cross check.

my explanation is not that good but surely an elephant will win

The two lower chambers of the human heart are known as:
a.
atriums
c.
auricles
b.
ventricles
d.
blood vessels

Answers

Answer:

b. ventricles

The right and left ventricles

Answer:

B(ventricles)

Explanation:

So lets go over the heart.

First blood circulates from your body to your heart. This is through blood vessels. These blood vessels are connected to the inferior and superior vena cava that go into the heart.

So, this means that the blood vessels are outside of the heart, not the lower areas.

Then, the blood goes into the right artierium, and down to the right venticle. So, thinking about this, it means that the artieriums are the top chambers.

The word auricles is another word for artiums, which we already know are the top chambers.

The venicles are below this, these must be the bottom chambers.

I attached files of some notes I took on the heart, they show the strucutre of the heart and the workings of the heart and circulatory system.

Hope my answer or notes helps! ;)

Most of the rocks we study were formed in what era?
A. Paleozoic
B. Cenozoic
C. Precambrian
D. Mesozoic?

Answers

Answer:

I think that answer A is correct

5. How is density affected when the depth increases?

Answers

Answer:

As you go deeper in depth, pressure increases. Density = mass/volume. The layers beneath us due to pressure get packed to the point of being very dense.

what describes a natural gas

Answers

Answer:

Explanation:

Natural Gas. Mixture of hydrocarbon gases that occurs with petroleum deposits, principally methane together with carying quantities of ethane, propane, butane, and other gases. Used as fuel in the manufacture of organic compounds. Where is natural gas found? Found in reservoirs underneath the earth's surface.

Describe the advantage of broad-leaved trees losing their leaves as winter sets in and the advantage of needle-leaved trees keeping their leaves if they are in poor soil

Answers

Answer:

The advantage of shedding broad leaves in the winter is to conserve the energy that needs to expand in order to provide heat to each part of the plant including leaves as in winters it becomes very dry and cold. If they do not shed their leaves they have to spend more energy to spend energy on leaves.

Needles like leaves have a thick cuticle layer that prevents from losing water in dry conditions or conditions with a limited amount of water in the soil. These leaves also help in photosynthesis by capturing more sunlight as they have a larger surface area. These adaptions can live in poor soil, rain and snowy conditions.

Which of the following is not true about ocean acidification?
A) caused by excessive CO2 in the atmosphere
B) it decreases concentration of CO32- needed for marine life shell formation
C) caused by flooding
D it is caused by decreased pH

Answers

Answer:

C

Explanation:

edg2021

Which of the following is a complex relationship between organisms and their environment?
A.)ecosystem
B.)biosphere
C.)abiotic factors
D.)biotic factors

Answers

The answer is A,hope this helps !

This is the original strand of DNA: ATG AAG TTT GGC TAA

Which option would represent a frame shift mutation due to deletion during replication?

Answers

Answer:

ATG AAG TTG GCT AA

Explanation:

I took the test

A genetic modification in which there is an acquisition and omission of nucleotide base in the series is called frame-shift mutation.

It modifies the reading frame of the series that can vary the amino acid sequences and the protein that it forms.

The correct answer is:

ATG AAG TTG GCT AA

This can be explained as:

In the sequence given in the question ATG AAG TTT GGC TAA there is a deletion mutation in the Thymine (T) nucleotide.

The deletion of thymine (T) causes the reading frame of the three-nucleotide to change and the reading pattern gets altered.

The frame now changes and the reading will start with altered three base pairs.

So, the sequence ATG AAG TTT GGC TAA will be mutated to ATG AAG TTG GCT AA.

To learn more about frame shift mutation follow the link:

https://brainly.com/question/15192336

hi please help i’ll give brainliest

Answers

answer of the question: B

Answer:

Yes that's B...

Explanation:

Moon casts a shadow over earth...

During cellular respiration, organisms convert different kinds of food into glucose. Cells then break down the glucose to provide energy for life activities. Which of these substances is also produced during cellular respiration?

A. Carbon dioxide
B. Fat
C. Oxygen
D. Protein

Answers

I took bio last year and I think the answer is B

Fat, of these substances is also produced during cellular respiration. Thus, option (b) is correct.

What is respiration?

Respiration is the transmission of oxygen from the outside world to cells within tissue, as well as the elimination of carbon dioxide in the reverse direction. It is a physiological reaction that occurs within living creatures' cells. We can breathe because of our lungs and respiratory system.

Glycerol is converted into one of the intermediates of glycolysis and hence enters the aerobic respiration pathway. Fats are a fuel for cellular respiration. It provides the most energy among lipids, carbs, and proteins. Fat is a triglycerides molecule.

As a result, the fat, of these substances is also produced during cellular respiration. Therefore, option (b) is correct.

Learn more about on respiration, here:

https://brainly.com/question/18024346

#SPJ6

what is the atomic number of this atom?

Answers

Answer:

6

Explanation:

The atomic number is simply the number of protons in an atom. So you can check my answer. Please give brainliest!

Alfred wegnar proposed what hypothesis

Answers

Answer:

Continental Drift Hypothesis

Explanation:

*PLEASE ANSWER!!!* ASAP
The natural sonar function provided by a dolphin’s paralimbic node is comparable to

a.) mouths for a primate.

b.) feet for a primate.

c.) eyes for a primate.

Answers

A: mouth for a primate

Answer:

C, eyes of a primate

Explanation:

While dolphins can use their eyes, the sonar (also known as echolocation) can help dolphins detect things from farther away and maneuver in dark locations.

Please let me know if I'm wrong, have a nice day. :)

Many farmers keep their chickens in sheds.
They claim that their chickens grow larger when kept in sheds rather than outside in fields.

Answers

okay so what is the question kiddo <3

Long tail X short tail + all long.

Mate two of these long tailed mice together and you get 3/4 long, 1/4 short.


C. Incomplete dominance




E. Dihybrid cross


A. Dominant/recessive gene


B. Codominance


D. Lethal gene

Answers

ANSWER: E

Dihybrid cross


MARK ME BRAINLIEST PLEASE

Which of the following statements can be inferred using the above information? Bubble A. Cells can function equally as well at all pH's because enzymes are effective at all pH's. Bubble B. Cells only function within a specific temperature range because enzymes only function within a specific temperature range. Bubble C. Cells only function within a specific pH range because enzymes only function within a specific pH range. Bubble D. Cells can function equally as well at all temperatures because enzymes are effective at all temperatures.

Answers

Hello. Your question is incomplete. The complete question asks for the correct answer to be found based on Catalase is an essential enzyme in living beings since all cells need it.

Answer:

B. Cells only function within a specific temperature range because enzymes only function within a specific temperature range.

Explanation:

Catalase needs to be present in all cells of the living organism because it is responsible for the decomposition of hydrogen peroxide that cannot stay inside cells for long periods of time. Following this type of reasoning, we can say that it is necessary to maintain a constant temperature for the enzymes of an organism to function well because all enzymes have a specific temperature range, even catalase.

The specific temperature range determines that the enzymes will only work within that range. Therefore, an environment where the temperature is below or above that specific range, can prevent the enzyme from functioning and even cause irreversible damage to the enzyme.

In which situation would artificial insemination most likely be used over other forms of treatment?

Answers

Artificial insemination can be used when there is a case of infertility.

This process lets the sperm skip the cervical mucus entirely . doctors often use this process when the reason for the couple’s infertility is unclear.

In case of endometriosis, this process is helpful in mild or moderate cases of endometriosis.

6 Claims. Evidence • Reasoning How
are mitosis and meiosis alike and different?
Summarize evidence to support your claim
and explain your reasoning.

Answers

The fundamental difference between mitosis and meiosis is that mitosis produces two daughter cells with the same number of chromosomes as the parent cell. Meiosis results in four daughter cells harboring only half of their parent's chromosomes, which underwent recombination.
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