Answer:
the first one is correct
Explanation:
...
In the year 2500, five male space colonists and five female space colonists from Earth settle on an uninhabited Earth like planet in the Andromeda galaxy. The colonists and their off-spring randomly mate for generations. All ten of the original colonists had free earlobes, and two are heterozygous for that trait. The allele for freeear lobes is dominant to the allele for attached ear lobes.
Required:
What is the allele frequency in the founding population?
Answer:
The correct answer would be - 0.1 a, 0.9 A
Explanation:
The initial population of the colonist had free earlobes which are represented by A here as it is dominant and attached is represent by a. purebred dominant would have AA.
Frequency of allele A =
8 pure dominant and 2 heterozygous dominant presents in the population
So, frequency of A allele = 8 x 2 + 2 / 20
= 18/20
= 0.9
As we know
p+q=1;
frequency of allele "a" = 1-p
= 1-0.9
= 0.1
in which case would facilitated diffusion be needed?
A. With large polar molecules moving against the concentration
gradient
B. With very small non polar particles moving down the
concentration gradient.
C. With very small polar particles moving against the
concentration gradient.
D. With large non polar molecules moving down the concentration
gradient.
Answer:
The case in which facilitated diffusion would be needed is in the transport of large non-polar molecules moving down the concentration gradient.
Explanation:
Facilitated diffusion (FD) involves a form of passive transport, that is, it does not require energy and mobilizes substances across the cell membrane in favor of a concentration gradient.
The passive transport mechanism of FD is necessary only in the case of transport of very large molecules or polar molecules that:
Cannot be transported by simple diffusion, due to the selective permeability of the membraneThey follow a concentration gradient, from the place with the highest concentration to the one with the lowest concentration.For FD to occur, it requires the use of a protein, which acts as a carrier of the molecules to be mobilized.
The other options are not correct because:
A and C. Passive transport, as facilited diffusion, implies movement in favor of a concentration gradient.
B and C. Non-polar small or very small molecules can cross the membrane by simple diffusion.
With large non-polar molecules moving down the concentration gradient.
Jessica: Pitch is how high or low a sound is. The pitch depends on vibrations. High pitch sounds have low amounts of vibrations
Rachael: Pitch describes how high or low a sound is. Sounds are caused by vibrations. The more vibrations, the higher the pitch.
Harvey: Pitch is caused by vibrations. The more vibrations, the lower the pitch of the sound.
Derek Pitch is how high or low a sound is. All sounds have mostly the same pitch.
Who has the best description of pitch?
Jessica
O Rachel
O Harvey
O Derek
Answer: Rachel
Explanation:
Pitch indeed refers to the highness of lowness of a sound. We are able to sense pitch based on the frequency of the sound wave with a higher frequency (more vibrations) having a higher pitch and a lower frequency having a lower pitch.
This is why lighter strings on guitars produce a higher pitch because when struck, they vibrate more as opposed to heavier strings. Rachel is therefore correct.
How many chromosomes are in each of the two new human body cells at the end of mitosis?
During a chemical reaction, a solid formed from a liquid. What is the formation of a solid during a chemical reaction called?
A)
Frozen
B)
Precipitate
Solvation
D)
Dissolution
Answer:
solvation
Explanation:
How are dogs an example of selective breeding? Which two characters would you like to have in the off spring?
Answer:
There are over 400 breeds of dog in the world and all are maintained as pure-bred stocks through selective breeding, which aims to maintain a closed genetic lineage. Most dog traits follow simple genetic rules. Traits are often referred to as being dominant or recessive.
Explanation:
Which of the following statements about codons in prokaryotic cells and eukaryotic cells is correct?
O A. Prokaryotic codons are longer than eukaryotic codons.
B. Eukaryotic codons are made of DNA, and prokaryotic codons are made of RNA.
OC. Prokaryotes do not have mRNA, so there are no codons.
O D. Codons are very similar, no matter whether the cell is prokaryotic or eukaryotic.
Will give brainliest for correct answer
Answer:
D
Explanation:
I just took this quiz so you are welcome
Codons are similar, both prokaryotic or eukaryotic cells have the same type of codons.
Codons are similar, both prokaryotic or eukaryotic cells have the same type of codons. Codons of both cells start with the same point or material but end with different point or materials. These codons are also different in these cells such as Prokaryotic codons usually specify different amino acids than those of eukaryotes.
The translation of codons is mediated by tRNAs in eukaryotes, but translation requires no intermediate molecules such as tRNAs in prokaryotic cells. Prokaryotic codons have contain different bases than that is present in eukaryotic cells so we can conclude that codons of both cells are similar in characteristics.
Learn more about prokaryotes here: https://brainly.com/question/1288013
Learn more: https://brainly.com/question/19763682
The ancient Egyptians were able to predict when the Nile River would flood?
Answer:
The awnser is Yes they did they grew there crops right by the river and when the water rised in the crops they knew that a flood was coming and would prepare for it.
Explanation:
Brainliest please
1. Name a protein that carries vital materials throughout the body.
2. Explain the specific function of this protein.
Please help thanks
Answer:
RBCs contain hemoglobin (pronounced: HEE-muh-glow-bin), a protein that carries oxygen. Blood gets its bright red color when hemoglobin picks up oxygen in the lungs. As the blood travels through the body, the hemoglobin releases oxygen to the different body parts.
Explanation:
Hope this helps.
. What process is shown in the figure below?
Answer: I didn't see it yet
Explanation: I didn't see it yet
PLZZ HELP
Match the answers
a. codominance
b. incomplete dominance
c. multiple alleles
d. sex-linked inheritance
_____ 1. When one allele is not completely dominant over the other and the result is a blended phenotype. For example, RR is red, rr is white, Rr is pink
_____ 2. When there are more than two alleles for a gene.
_____3. When there are two alleles that are equally dominant and both traits are expressed independently in the phenotype. For example, RR is Red, rr is white, Rr is red and white
_____ 4. When a gene is located on the sex chromosome.
Answer:
1. b
2. c
3. a
4. d
Explanation:
These all 4 are the exceptions to the Mendel's laws that are being faced.
a. co dominance
b. incomplete dominance
c. multiple alleles
d. sex-linked inheritance are all the exceptions to the laws of Mendel.
What is inheritance ?
It is the property by virtue of which the genes from parents are expressed into the individuals in the progeny.
When one allele is not completely dominant over the other and the result is a blended phenotype. For example, RR is red, rr is white, Rr is pink the dominance in it is called the incomplete dominance.When there are more than two alleles for a gene it is called as multiple alleles.
When there are two alleles that are equally dominant and both traits are expressed independently in the phenotype. For example, RR is Red, rr is white, Rr is red and white it is called as co dominance where the both are expressing.
When a gene is located on the sex chromosome it is showing the inheritance called as sex linked inheritance.
Learn more about sex linked inheritance at :
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What would be a growth factor for a population of deer?
New food sources
Increase in predators
Competition
Disease
Answer:
new food sources
Explanation:
other three factors do not contribute to the growth of them
What are the six key elements found in living organisms
Answer:
here. BTW i'm in middle school
Explanation: carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur.
X-rays have more energy than ultraviolet waves.
What else is true about
X-rays?
O A. They have a shorter wavelength than
ultraviolet waves.
O B. They have a smaller amplitude than
ultraviolet waves.
C. They have a longer wavelength than
ultraviolet waves.
O D. They have a lower frequency than
ultraviolet waves.
Answer:
A. They have shorter wavelength then ultraviolet waves. is correct
write in breif abaut the importance of social tradition and costoms of nepal
Answer:
Most of the customs of Nepal go back to the Hindu, Buddhist, or other religious traditions
Explanation:
Nepal is rich in various cultures and customs, related to Hindu and Buddhist traditions. As in Hindu tradition, in Nepal marriages are arranged by parents, many ethnic groups have their own language and beliefs.
Society is divided into casts. Death rites are common and the deceased is mourned for 13 days.
is the energy an object has because of the movement of its molecules.
A. Heat
B. Thermometer
C. Particles
D. Temperature
Temperature is a measure of kinetic energy because molecular motion is regarded as kinetic energy. The average kinetic energy of the molecules in a gas increases as its temperature rises, resulting in more motion. Thus option D is correct.
What is kinetic energy?A particle or an item that is in motion has a sort of energy called kinetic energy. An item accumulates kinetic energy when work, which involves the transfer of energy, is done on it by exerting a net force.
The molecular kinetic energy rises and the molecules start to move faster when heat energy is added to a system.
By increasing the temperature, the velocity of the particles is accelerated.
In contrast, lowering the temperature slows down the motion of the particles until it eventually stops entirely at absolute zero (0 K). The particles will have kinetic energy since they are moving.
Therefore, Temperature is the energy an object has because of the movement of its molecules.
Learn more about kinetic energy here:
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FIRST ANSWER GETS BRAINLIEST Which is one characteristic of deep ocean currents?
move quickly
Move because of wind
move cold water
move in a circular pattern
Answer:
Move quickly
Explanation:
Answer:
C. Extremly cold water
Explanation:
Which is an example of a human disturbance in a community?
flood
toxic spill
major storm
Please help, if question is right I will give brainliest.
Answer:
Flagella
Explanation:
The flagella or flagellum has a long, tail-like extension.
Explain why DNA requires structural robust and efficient storage and organization mechanisms/structures.
Answer:
DNA packaging contributes to the compaction of the genetic material into cells that are many times smaller and also regulates gene expression and cell replication in living systems.
Explanation:
DNA is a fundamental molecule that contains instructions that make each organism unique. Each chromosome is composed of a very long linear DNA molecule associated with histone proteins that compact the genetic material, which is known as DNA packaging. Transcription and replication require that both strands of the DNA separate. Nonetheless, during DNA packaging, nucleosomes and the folding into chromatin fibers ensure chromosomal DNA is correctly packaged inside smaller nuclei. In consequence, DNA packaging not only enables the compaction of long linear DNA into the cells but also is involved in key biological processes such as gene regulation (transcription) and cell replication.
+
50. The work of scientists usually begins wit
testing a hypothesis.
careful observations.
creating experiments.
drawing conclusions.
Answer:
Careful observations
Explanation:
Dr. Thalmus suggested that Tim take a regimen of Human Chorionic Gonadatropin (HCG), which has the same effects as Luteinizing Hormone (LH) Why would he recommend this
Answer:
Tim and his wife are trying to have babies
Explanation:
The hCG or the Human chorionic gonadotropin is the name of a hormone that is for the maternal recognition of pregnancy and is produced by the trophoblast cells which surrounds a growing embryo, and it eventually forms placenta after implantation.
Luteinizing hormone is also known as gonadotropin. This hormones is an important sex hormones for both men and women.
In the context, the doctor advised Tim to take a medical course of hCG that is having the similar effects like the luteinizing hormones as Tim and his wife is planning for babies.
10. How does a sex cell differ from a body cell?
A. A sex cell does not contain chromosomes.
B. A sex cell contains homologous chromosomes.
C. A sex cell has the same number of chromosomes as a body cell.
D. A sex cell has the half the amount of genetic material as a body cell.
After pollen grows a tube down the style
A egg cells unite with an embryo
B chromosomes split in half
C the pollen sticks to the stigma
D sperm cells travel to the ovary
Answer:
D
Explanation:
sperm cells travel to the ovary for fertilization
Little help, please.....
Which of the following best describes the amount of daylight received in Georgia throughout the year?
A. The amount of daylight is exactly the same all year long
B. More daylight is received in summer than in winter
C. The amount of daylight changes as the Moon phases changes
D. Daylight periods are longest during the coldest weather
WILL MAKE YOU BRAINLIEST
Answer:
C. The amount of daylight changes as the Moon phases change?
Explanation:
Which of the following catastrophic events would have the LEAST impact on TEXAS?
O Earthquake
Tornado
O Flood
Hurricane
Answer:
Either earthquake or flood.
Explanation:
Texas has proven that it does not handle hurricanes well. And a tornado would not affect Oklahoma, but it might affect Texas, I'm not sure as I do not live in Texas, rather I live in Oklahoma.
Name 3 populations found in the Yellowstone ecosystem.
Answer:
Me
Explanation:
Answer:oh hdhfhdufhfhfufdhdh
Ryhdhd
Explanation:
HELP HELP HELP HELP HELP
Predictions:
20%
50%
60%
Actual results
20%
50%
60%
Answer:
I'm not sure how to help with this question because there was not enough information given.
Answer:
um i don't know
Explanation:
Please hELP ASAP WILL MARK BRAINLIST

Answer:
A
Explanation:
Hope I helped
