Answer:
In the mid-1800s, over-hunting of Northern Elephant Seals reduced their population size to fewer than 40 individuals. However, the population has since rebounded to over 100,000 animals. The population went through a _bottle neck event (genetic drift)_, which makes it more susceptible to _developing a genetic disease_.
Explanation:
Genetic drift is the random change that occurs in the allelic frequency of a population through generations. The magnitude of this change is inversely related to the size of the original population. These changes produced by genetic drift accumulate in time. Eventually, some alleles get lost, while some others might set. Genetic drift affects a population and reduces its size dramatically due to a disaster or pressure-bottleneck effect- or because of a population split -founder effect- . The bottleneck effect most likely affects smaller populations.
In the exposed example, extensive hunting acted as a pressure that reduced the number of Northern elephant seals to fewer than 100. This population experienced one or many generations of small size since these animals were affected by hunting. As the survivors did not have the whole genetic pool of the original population, the population size might have recovered to a current population size of 100,000 individuals, but the genetic pool might have not. When the small population increases in size, it will have a genetically different composition from the original one. In these situations, there is a reduced genetic variability, with a possibility of developing a peculiar allelic component. If the survivors in the population carried or developed a mutation, probably this mutation passed from generation to generation. It will involve more individuals each time and increase the probability of developing a genetic disease.
A river is being polluted with fertilizer runoff from a neighborhood of houses. This is considered A. point source pollution B. nonpoint source pollution C. heavily regulated water pollution D. illegal
Answer:b
Explanation:
What are the PRODUCTS in photosynthesis?
[A] Carbon dioxide (CO2) water (H20), and ATP
[B] Carbon dioxide (CO2), water (H20), and sunlight
[C] Glucose (C6H12O6) and oxygen (O2)
3. The human body has devised an excellent method to keep the body pH under control. a. What principle underlies the constant pH of human blood, and how does the blood achieve this
What happen while humans sleep?
Answer:
Many biological processes happen during sleep: The brain stores new information and gets rid of toxic waste. Nerve cells communicate and reorganize, which supports healthy brain function. The body repairs cells, restores energy, and releases molecules like hormones and proteins.
Explanation:
Hope this helped, have a good day/night!!
What the answer there are no options
which is a kingdom in the eukaryote domain
Answer:
animalia
fungi
protista
plantae
HELP ME PLEASE
What object is shown in this image?
a nebula
a red giant
a supernova
a neutron star
Answer:
d I think
Explanation:
Answer:
nebula
Explanation:
I believe it's a nebula
Use your final answer in teguency to compute and solve the peod of waved. Use the back
page of module for your solution in FREQUENCY and write your answers below for your
computation of PERIOD OF WAVE. Use the formula given,
......1
T= -
......f
Answer:
ওয়েভের পড গণনা এবং সমাধান করতে টেলিগ্রাসে আপনার চূড়ান্ত উত্তরটি ব্যবহার করুন। পিছনে ব্যবহার করুন
মডিউল পৃষ্ঠা
“Scientist have long understood how nutrients move from the oceans surface to its depths. As phytoplankton die, they sink and collect on the ocean floor. But if nutrients are continually sinking to the depths of the ocean, how are surface waters replenished with nutrients? Scientist discovered that in certain regions of the ocean, the nutrients-rich deep water was upwelling, or rising to the surface”
which phrase from the paragraph helps you to understand that ocean health involves steady restoration
Answer:
"As phytoplankton die,they sink and collect on the ocean floor"......."scientist discover that in certain regions of the ocean the nutrients deep water was rising to the surface"
Explanation:
this shows steady restoration of ocean nutrients
As seen that the death of planktons lead to uprise in oceanic nutrients .the cycle just keeps going on and on
its quite self explanatory
Question on the image below
How does sexual reproduction bring about variation
Answer:
The process of sexual reproduction introduces variation into the species because the alleles that the mother and the father carry are mixed together in the offspring. ... A mate must be found, the egg must be fertilised by sperm, and then the offspring develop.
describe the roles of membranes in an amoeba?
Answer: cell membrane - the thin layer of protein and fat that surrounds the amoeba; it allows some substances to pass into the cell, and blocks other substances.
Explanation:
Answer:
The plasma membrane of a cell is a network of lipids and proteins that forms the boundary between a cell's contents and the outside of the cell.
Explanation:
The sequence of DNA ACTGGGCGTAAG part of a gene. How many CODONS can be found in the segment
Explanation:
First, think about which base pairs arise in complementary strands of DNA:
DNA → DNA
adenine → thymine (A → T)
thymine → adenine (T → A)
cytosine → guanine (C → G)
guanine → cytosine (G → C)
However, mRNA does not consist of the same four bases as DNA. While DNA has the ATCG nitrogenous bases, RNA replaces thymine with uracil, making its bases AUCG.
So, that means that whenever DNA has adenine, instead of pairing this with thymine, RNA will use uracil instead.
DNA → RNA
adenine → uracil (A → U)
thymine → adenine (T → A)
cytosine → guanine (C → G)
guanine → cytosine (G → C)
Giving us the corresponding sequence:
Question in image below
Answer:
AA
Explanation:
This means the same and AA is the same
Answer:
Aa
Explanation:
If a region on earth has a TEMPERATE climate, which of the following
statements will be true about that region?
O The temperature is usually warm and it rains often.
O
The temperature is usually cold and it rains or snows often.
The temperature and rainfall change at different times of the year.
The temperature is usually cold and there is very little rainfall.
Answer:
The temperature and rainfall change at different times of the year.
Explanation:
A temperate climate region is a territory in which the climate cannot be classified as completely hot or cold, nor rainy or dry, but these characteristics are variable according to the season of the year in which it is found. Thus, these climates do not have extreme heat or cold temperatures, but rather moderate climatic conditions. An example of a region with a temperate climate is the Mediterranean region, the State of Georgia in the USA or Uruguay.
Which of the following is a negative consequence of air pollution on people?
A. More crop growth
B. More intense sunlight
C. Less acid rain
D. More lung disease
which animal is the Tertiary consumer.
The student's results are shown in Fig. 5.2.
ASSIGNMENT - 2021
100
90
80
70
60
time for colour
change
50
7 minutes
40
30
20
10
0+
0
20
40
60
80
100
120
distance from lamp /cm
Fig. 5.2
Describe and explain how the rate of photosynthesis is affected by light intensity
Answer:
it is changed because the more light that a plant revives is the more energy they have______ support mango trees out of the water.
a. tap roots
b. prop roots
c. sand dunes
d. tide supports
Answer:
B: Prop Roots
Explanation:
Got it right on Edge
Explain why serine proteases do not catalyze hydrolysis if the amino acid at the hydrolysis site is a D-amino acid. Trypsin, for example, cleaves on the CC-side of L-ArgArg and L-LysLys, but not on the CC-side of D-ArgArg and D-LysLys.
Answer:
Explanation:
A protease is an enzyme that catalyzes the hydrolysis of the peptide bonds that tie polypeptide chains together, releasing individual amino acid subunits. The L and D nomenclature for amino acids defines the structure of the glyceraldehyde isomer through which the amino acid can be produced.
SEE BELOW FOR THE APPROPRIATE STRUCTURES.
We need to figure out why swine proteases hydrolyze L-amino acids but not D-amino acids in any way. we know that enzymatic catalysts act as polypeptides if you can recall. They must retain a very precise three-dimensional structure for a catalytic activity to occur. Substrates that do not quite match the required configuration at the active site will not be reacted to — this is a "lock and key" style.
The present exercise may be explained by the fact that the configuration and structure of D-amino acids prevent them from binding properly to the active site of the protease enzyme. Perhaps they're pointed in the wrong direction, or perhaps there happens to be missing electrical interaction that's needed to keep the substrate in position.
Nonetheless, L-amino acids, on the other hand, seem to have the right configurational aspects in the active site and are hydrolyzed.
What are the REACTANTS in photosynthesis?
[A] Carbon dioxide (CO2), water (H2O), and ATP
[B] Carbon dioxide (CO2), water (H2O), and sunlight
[C] Glucose (C6H12O6) and oxygen (O2)
Answer:
[tex]\boxed {\boxed {\sf B. \ Carbon \ dioxide , water, and \ sunlight}}[/tex]
Explanation:
The reactants are the substances that go into a reaction. You begin with the reactants, then the reaction turns them into different products.
Remember, photosynthesis is a process that certain organisms, like plants, algae, and some types of bacteria, undergo to create "food". They actually produce glucose which serves as an energy source because it is converted into ATP during cellular respiration.
The formula for photosynthesis is:
[tex]6H_2O+6CO_2+ light \ energy \rightarrow C_6H_12O_6 + 6O_2[/tex]
or
[tex]water + carbon \ dioxide + light \ energy \rightarrow glucose + oxygen[/tex]
The reactants are the starting substances, so they are to the left of the arrow. Therefore, the reactants are carbon dioxide (CO₂) water (H₂O), and sunlight. Choice B is correct.
What type of data is one of several groups or forms?
categorical
qualitative
quantitative
tentative
Answer:
Categorical is the answer
Which trophic level would have the highest population of organisms? WHY?
Answer: Decomposers,
Explanation: Because technically, they devour everything dead, and this is a very good question.
p.s. I'm new-
Melanie is asked to list the complementary base pairings of a DNA sample in her lab. What is the MOST appropriate response she can give?
ST, RJ, CO, DI, SE
RFLP and PCR
chromosomes and genes
AT, CG, CG, AT, CG
Answer:
AT, CG, CG, AT, CG
Explanation:
Hi, the answer is the last one, AT, CG, CG, AT, CG.
When we read the question, it says base pairings of a DNA sample in her lab. The only base pairs in DNA is A, T, C, and G.
A is complementary to T, and C is complementary to G.
Therefore, you can eliminate the first three.
Hope this helps you!
Are mules an example of speciation? Why or why not?
Answer:
Hybrids are the offspring of two species. A mule is the hybrid offspring of a female horse and male donkey. Because mules are sterile, they are not classified as a distinct species. The biological species concept connects the idea of a species to the process of evolution.
I’m very much confused
Answer:
Explanation:
BBBBBBBBB
Answer:
The answer is D
Explanation:
(Psychology)
An adult vervent monkey sees a Jaguar approaching. He cries out loudly, warning all the other vervent monkeys in the area of danger.
Why is this behavior considered altruistic?
A) The monkey will gain social praise for its behavior.
B) The monkey is putting itself at risk for other individuals.
C) The monkey understands that the Jaguar is not a threat.
D) The monkey does not believe others can help spread a warning.
Answer:
The monkey is putting itself at risk for other individuals.
Explanation:
The behavior of the monkey is altruistic because the monkey is putting itself at risk for the safety other individuals.
What is an altruistic behavior?An altruistic behavior is one in which the individual put a the benefits of others above his own benefit.
An altruistuc behavior is an example of selflessness.
The monkey is exhibiting altruistic behavior by putting itself in danger in order to warn others about the jaguar.
Therefore, the behavior of the monkey is altruistic because the monkey is putting itself at risk for other individuals.
Learn more about altruistic behavior at: https://brainly.com/question/11287458
#SPJ2
4. Which of the following are common to all of the
chemical cycles? Select all correct answers.
a. reservoirs and processes
b.an atmospheric component
c. photosynthesis and respiration
d. living things as a reservoir
e. the sun as a source of energy
f.can be affected by human activities
d. living things as a reservoir
e. the sun as a source of energy
f. can be affected by human activities
Common elements to all of the chemical cyclesLiving things as a reservoir, the sun as a source of energy and human activities are the common elements present to all of the chemical cycles. These factors causes direct impact on the chemical cycle so we can conclude that option d, e and f are the correct statements.
Learn more about chemicals here: https://brainly.com/question/1222323
Name a food that people eat that would make them a tertiary consumer
Answer:
By eating foods such as grain-fed chicken, a person would fill the role of secondary consumer, however, if that chicken is also able to eat insects the person is a tertiary consumer.
Explanation:
which type of fingerprint is shown below? (attachment)
Explanation:
this is whorl fingerprint