Which of the four factors that affect evolution apply to the finches that the Grants studied? Use
evidence from your research to support your answer. (15 points)
Answer:
Natural Selection in Real Time
"When we made the comparison between the size of the offspring generation and the population before selection, we found a measured, evolutionary response had taken place and it was almost identical to what we had predicted."
-Peter Grant
Darwin thought that evolution took place over hundreds or thousands of years and was impossible to witness in a human lifetime. Peter and Rosemary Grant have seen evolution happen over the course of just two years.
The Grants study the evolution of Darwin's finches on the Galapagos Islands. The birds have been named for Darwin, in part, because he later theorized that the 13 distinct species were all descendants of a common ancestor. Each species eats a different type of food and has unique characteristics developed through evolution. For example, the cactus finch has a long beak that reaches into blossoms, the ground finch has a short beak adapted for eating seeds buried under the soil, and the tree finch has a parrot-shaped beak suited for stripping bark to find insects.
The Grants have focused their research on the medium ground finch, Geospiza fortis, on the small island of Daphne Major. Daphne Major serves as an ideal site for research because the finches have few predators or competitors. (The only other finch on the island is the cactus finch.) The major factor influencing survival of the medium ground finch is the weather, and thus the availability of food. The medium ground finch has a stubby beak and eats mostly seeds. Medium ground finches are variable in size and shape, which makes them a good subject for a study of evolution.
The first event that the Grants saw affect the food supply was a drought that occurred in 1977. For 551 days the islands received no rain. Plants withered and finches grew hungry. The tiny seeds the medium ground finches were accustomed to eating grew scarce. Medium ground finches with larger beaks could take advantage of alternate food sources because they could crack open larger seeds. The smaller-beaked birds couldn't do this, so they died of starvation.
In 1978 the Grants returned to Daphne Major to document the effect of the drought on the next generation of medium ground finches. They measured the offspring and compared their beak size to that of the previous (pre-drought) generations. They found the offsprings' beaks to be 3 to 4% larger than their grandparents'. The Grants had documented natural selection in action.
While beak size is clearly related to feeding strategies, it is also related to reproduction. Female finches tend to mate with males that have the same size beaks. These factors together can add to the development of new species.
The Grants return each year to Daphne Major to observe and measure finches. They have been collecting data on the finches for over 25 years and have witnessed natural selection operating in different ways under different circumstances.
Which amino acids do the following codons encode - UUC,
UCU, CUU?
a Phenylalanine, serine, leucine
b Serine, alanine, leucine
C Methionine, serine, leucine
d None of the above
Answer:
A A U C C
A AAA Lysine AUA ACA Threonine
A AAU Asparagine AUU ACU Threonine
A AAC Asparagine AUC ACC Threonine
The codon UUC encodes for the amino acid phenylalanine, the codon UCU encodes serine, and the codon CUU encodes leucine. So the correct answer is (a).
Organic substances known as amino acids have both amino and carboxylic acid functional groups. Proteins are made up of substances called amino acids. Proteins and amino acids are the components of life.
A collection of instructions called the genetic code governs how DNA is converted into proteins. Codons, which are three-nucleotide sequences, are the building blocks of the code. Codons each represent each individual amino acid.
The codons UUC, UCU, and CUU all code for the amino acid phenylalanine. The third nucleotide in the codon determines the amino acid that is encoded. The codons UUA and UUG has different nucleotide from phenylalanine in the third position and thus code for leucine. The codon UCG encode for Serine.
Therefore, option (a) is right.
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List any three uses of psychology in the real-world and explain their impact. Respond in a minimum of five sentences.
The three uses are:
Education,Human Development, Sports
Explanation:
EDUCATION .:-Psychologists working in the field of education study how people learn and retain knowledge. They apply psychological science to improve the learning process and promote educational success for all students.
HUMAN DEVELOPMENT .:-Developmental psychologists help us better understand how people grow, develop and adapt at different life stages. They apply this knowledge to help people overcome developmental challenges and reach their full potential.
SPORTS .:-A sports psychology mindset can help you to build self-confidence and enhance your athletic performance. It's been long established that your beliefs direct your actions. If confidence is a set of beliefs about your abilities, then it's no surprise that it can lead to higher performance and better mental health.
PLEASE HELP
In what way could a point mutation in DNA make a difference in the function of a protein?
It might result in a chromosomal translocation.
It might substitute a different amino acid in the protein, which could change its function.
It might exchange one serine codon for a different serine codon.
It might exchange one stop codon for another stop codon.
Answer:
It might substitute a different amino acid in the protein, which could change its function.
Explanation:
I took the test and i got this answer right good luck ! =)))
The way that could a point mutation in DNA make a difference in the function of a protein is
B. It might substitute a different amino acid in the protein, which could change its function.
What is point mutation?Point mutation is a mutation in which a single nucleotide is changed. In this mutation, a single base pair can be deleted or added to the sequence.
Sickle cell anemia is a disease caused by point mutation.
Thus, the correct option is B.
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What is the difference between an infectious disease and a noninfectious disease?
A)the length of the disease
B)the severity of the disease
C)the cause of the disease
D)whether the disease is fatal
Answer:
A
Explanation:
How much does a cloud weigh
Answer:
about 500,000 kilograms
Answer:
about 1.1 million pounds
Explanation:
In an experiment, scientists blocked the stoma of the first of two otherwise similar plants, resulting in ____
of the altered plant's respiration of water and carbon dioxide.
Answer:
altered growing
Explanation:
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If you lived on Mercury, you would:
1.) always be the same distance from the sun
2.)see the sun rise in the west and set in the east
3.)be freezing at night because the planet has no atmosphere
4.)be crushed by the weight of the planet's thick, heavy atmosphere
Answer:
"Be freezing at night because the planet has no atmosphere" is the correct answer.
Explanation:
I was doing my reading in OW and I quote this is what OW said:
Temperatures during the day can reach 430°C (800°F), but can drop to -170°C (-280°F) at night because there is no atmosphere to trap heat.
Hope I helped:)
Have a great day!!!
PLEASE HELP!!
Why did the food coloring not move into the egg that was placed in the base? *
Because the egg shell was still strong
Because the egg shell got weaker
Because diffusion happened
Because the food color disappeared
Why did the food coloring move into the egg placed in acid? *
Because the egg shell was still strong
Because the egg shell got weaker
Because diffusion did not happen
Because the food color disappeared
Answer:
Because the egg shell was still strong
what are mutations and how do they affect an organism?
Answer:
Mutations can affect an organism by changing its physical characteristics (or phenotype) or it can impact the way DNA codes the genetic information (genotype). When mutations occur they can cause termination (death) of an organism or they can be partially lethal
Explanation:
Celula encargada del desdoblamiento de material disuelto en las células, por medio de enzimas encargadas de reciclar todo todos el material químico disponible
Answer:
Si.
Explicación:
Sí, la célula es responsable del despliegue del material disuelto en las células con la ayuda de enzimas que se encarga de reciclar todos los materiales químicos disponibles. Los materiales tomados por la célula del entorno exterior se pueden descomponer en moléculas más pequeñas con la ayuda de enzimas que aceleran las reacciones químicas en la célula. Hay varias enzimas presentes en el citoplasma de la célula que realiza su función.
A basic plant cell is shown.
Plant Cell
X
KEY
W-Vacuole
X-Nucleus
Y-Mitochondrion
z-Chloroplast
w
-Z
Which organelle stores hereditary material and coordinates the activities of the cell?
Organelle W
Organelle X
Organelle Y
Organelle z
Answer:
organelle X
Explanation:
the nucleus controls all activities carried out by the cell
When a cold Front is approaching, what happens?
A. warm air is pushing under cold air causing humid weather and lower temperatures
B. warm air rises, cools, and causes rain and thunderstorms abruptly
C. warm air is pushing under cold air causing humid weather and higher temperatures
D. Cold air is pushed over warm air causing rain and thunderstorms
Answer:
B
Explanation:
i had that question
10+6h=34 what does h equal?
Answer: h = 2.125
Explanation:
Simplifying
10h + 6h = 34
Combine like terms: 10h + 6h = 16h
16h = 34
Solving
16h = 34
Solving for variable 'h'.
Move all terms containing h to the left, all other terms to the right.
Divide each side by '16'.
h = 2.125
Simplifying
h = 2.125Answer:
The answer is h = 4.
Explanation:
1) Subtract 10 from both sides.
[tex]6h = 34 - 10[/tex]
2) Simplify 34 - 10 to 24.
[tex]6h = 24[/tex]
3) Divide both sides by 6.
[tex]h = \frac{24}{6} [/tex]
4) Simplify 24/6 to 4.
[tex]h = 4[/tex]
therefor, the answer is h = 4.
Photosynthesis and cellular respiration both involve the Jews and release of gases was semi-correct identifies the role of gases in the two process?
Answer:
Photosynthesis and cellular respiration both are opposite to each other.
Explanation:
Photosynthesis and cellular respiration both are opposite to each other because the reactants of photosynthesis are the products of respiration whereas the reactant of respiration are the products of photosynthesis. In photosynthesis, carbondioxide gas react with water forming oxygen and glucose while on the other hand, in respiration, glucose is broken down with the help of oxygen produces carbondioxide gas, water and energy in the form of ATP.
The term chemicals in this diagram represents
A. Starch molecules
B. DNA molecules
C. Hormone molecules
D. Receptor molecules
Answer:
I'm not seeing the diagram??
Which of the following is true about molecules?
1. Composed of the two same atoms
2. Composed of two different atoms
3. H2O is an example of molecule
4. All of the above is true.
Answer:
4) All of the above is true.
Why?
When two or more atoms chemically bond together, they form a molecule. Sometimes the atoms are all from the same element. For example, when three oxygen atoms bond together, they form a molecule of ozone (O3). If a molecule forms from atoms of two or more different elements, we call it a compound. Every combination of atoms is a molecule. A compound is a molecule made of atoms from different elements. All compounds are molecules, but not all molecules are compounds. Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element. This is because they are all made up of different types of molecules. Molecules are not only made up of different types of atoms but also different ratios. Like in the water example above, a water molecule has 2 hydrogen atoms and 1 oxygen atom. This is written as H2O.
Sorry for the long paragraph. I wanted to get my point across.
how r babies made. Explain in detail for brainliest.
Answer: Sexual Intercourse (Sex)
Explanation: Sexual intercourse is when a biological male inserts their genitals into a biological women's genitals until semen, a liquid filled with fertilizing cells called sperm, travels into the women's uterus (a sack in the abdomen where a baby forms). If you are lucky, they will reach the eggs, produced by a woman every month after puberty, and a fetus (an unborn baby) will form over nine months. After those months, the woman's stomach will appear much bigger, until finally, the fetus is ready to be born. The woman's uterus will start squeezing out the fetus and the genitals will stretch, until finally, a baby emerges! The umbilical cord will be cut, tied, and become the baby's belly button. The baby should start to breathe, and the woman's organs will eventually go back to normal.
How does the support structure of echinoderms differ from that of arthropods?
will give brainliest
Answer:
I would say the main difference is their covering. Arthropods have an exoskeleton, which protect their soft bodies while echinoderms have living endoskeletons. Overall, arthropods are more closely related to nematodes than echinoderms.
Happy learning!
--Applepi101
Which characteristic do all protists have?
They all make or consume food.
They all survive in any environment.
They are all unicellular.
They all have flagella.
Answer: They all survive in any environment.
Explanation: Protists have the ability to survive in any environment, even extreme environment. They can live in the ocean, desert or extremely hot environment, or even a extremely cold environment.
I'll explain why the others aren't correct.
Protists can be both unicellular and multicellular, they're not always unicellular. Kingdom Protista contains all eukaryotics, so they're not always unicelluar.
Protist cannot make or consume food. Animals consume food, and plants make food, not protista. Yes they're many plant-like protists out there, such as algae, they get their food from the sun above. So all protists cannot make or consume food.
Protist does have flagella, but not all protists. Protists that are motile and generate movement have flagella, meaning they move. Not all protist move, like plants can't move. So, not all protists have flagella, meaning they can move.
Let me know if you have any questions.
Sincerely, Lily :)
ome people have dimples; other people do not. Having dimples is dominant over not having dimples.
If the allele for having dimples is represented with the letter D, what allele combinations can result in having dimples?
are required in large quantities, while are required in smaller quantities.
Explanation:
i realy dont konw but you can still eaxplain
what type of characteristics would be associated with type IIx fiber.
Answer:
Type IIX fibers are characterized by high force/power/speed production and low endurance.
Explanation:
3. How many elements are in the mixture pictured?
A.7
B.4
C.3
D.2
Answer:
is there a picture?
Explanation:
please mark brainliest
Which cell structure of the zooxanthellae performs a vital function that also helps the coral polyp grow?
Answer:
photosynthesis
Explanation:
Zooxanthellae are not only responsible for providing energy via photosynthesis, but also take up nutrients released by the corals metabolism such as nitrogen and carbon dioxide.
The meiotic division takes place
(b) body cells
(d) Vegetative cells
(c) Reproductive cells (sex cells)
(a) Skin cells
Answer:
C reproductive cells ( sex cells)
WILL MARK BRAINLIEST Identify 2 organisms that would have a decreased food supply if insects were removed from the food web,
Answer:
Frogs and voles would have less food supply.
Explanation:
There would be more food for the rabbits and slugs, so their populations would increase. However, ( there would be less food for the frogs and voles), so their populations would decrease. This means less food for the foxes and hawks. However, there are likely to be more rabbits and thrushes for them to eat, so their populations might stay the same.
A student is observing plant cells and animal cells under a microscope.
Which of the cell structures would be found in both the plant and the animal cells when listed in the chart above?
A. nucleus
B. cell wall
C. chloroplast
D. large central vacuole
There are no carriers for Huntington's Disease -- you either have it or you don't. With this in mind, is Huntington's disease caused by a dominant or recessive trait?
a) dominant
b)recessive
c)It cannot be determined
d)It varies depending on whether an individual has one or two copies of the allele
How many amino acids are coded for by the strand of mRNA shown below? Assume the reading frame begins with the first nucleotide.
CGA UAC
Answer:
2 ..........................
Answer:
2
Explanation:
Two for the win!
