Who help me about this?
Answer:
Its easy Ana
Explanation:
In fruit flies, the gene for eye color is located on the X chromosome, and the red eye allele (R) is dominant
to the white eye allele (r). A carrier female is mated with a male fly with genotype X
rY. Which of the
following statements best describes the expected outcome of the cross?
a. The chance of an offspring having red eyes is 75%
b. The chance of an offspring having white eyes is 50%
c. The chance that a male offspring will have white eyes is 0%
d. The chance that a female offspring will have red eyes is 100%
Answer:
b. The chance of an offspring having white eyes is 50%
Explanation:
So the genotype of the male fly is X^r Y. This means the male has white eyes because he only has one X chromosome, so he will express whatever allele is on that chromosome.
The genotype of the female fly, though, is X^R X^r. This is because carriers are heterozygous for traits, and the sex chromosomes of most females is XX (with some exceptions, like XXX, or X (Turner syndrome)).
If we cross this, what are the outcomes? Do a Punnett square. You get the genotypes of X^r X^R, X^r X^r, X^R Y, and X^r Y. The expected phenotypes are a red eye female, white eye female, red eye male, and white eye male.
Now, let's look at the choices:
A.: The chance of an offspring having red eyes is not 75%; it is 50%.
B.: The chance of an offspring having white eyes is 50%!!!
C.: The chance that a male offspring will have white eyes is 50%, not 0%.
D.: The chance that a male offspring will have white eyes is 50%, not 100%.
Sooo, it's B!
1. Discuss how natural selection affects animal behavior and how behaviors can affect the survival of an animal species
Answer:
Animal behavior includes all the ways animals interact with other organisms and the physical environment. ... Behavior is shaped by natural selection. Many behaviors directly increase an organism's fitness, that is, they help it survive and reproduce.
PLEASE HELP I WILL BE GIVING THE BRAINLIEST AND 15 POINTS!!!!!!!!
Charlotte placed raisins in a glass of water and after a while, saw them swell up and get larger. It made her wonder about the way water moved into different items. She knew cells allowed materials in, but she wanted to know more and she read that the cell membrane had specific jobs. Which of the following correctly describes the cell membrane’s function?
A. It is permeable, so it can allow all materials to move freely across the cell membrane.
B. It uses diffusion and osmosis to move all materials into and out of the cell.
C. It uses active transport and facilitated diffusion to move all materials into and out of the cell.
D. It is selectively permeable, so it can allow certain materials to pass through it and prevent others from passing into the cell.
Answer:
D. It is selectively permeable, so it can allow certain materials to pass through it and prevent others from passing into the cell.
Explanation:
What is the pathway of air into the body?
nose → nasal cavity → pharynx → trachea → larynx → bronchi → lungs
nose → nasal cavity → pharynx → larynx → trachea → lungs → bronchi
nose → nasal cavity → larynx → pharynx → trachea → bronchi → lungs
nose → nasal cavity → pharynx → larynx → trachea → bronchi → lungs
Answer:
nose → nasal cavity → pharynx → larynx → trachea → bronchi → lungs
Explanation:
this is right.
Answer:
It's D he's right
Explain:
I just did it in edge
What is the second most abundant element in the human body?
Select one:
A. carbon
B. methane
C. water
D. oxygen
water
Explanation:
cuz after blood , water is the next thing that follows
Answer:carbon
Explanation: water is the first abundant element in the human body and carbon is the second
Which best describes this excerpt?
Read the excerpt from "A Simple Way to Create Suspense".
For instance, heading toward a movie review program,
remember we asked: Who was the studio's first choice for
the Harry Callahan role in "Dirty Harry"?
We knew most viewers would be intrigued. (What, Clint
Eastwood wasn't the first choice?) But—and this was the
lesson—the success of the tactic didn't depend on intrigue.
Even viewers with no interest at all stuck around to find out.
Humans are hard-wired. They need to know. Even viewers
who knew the answer for sure stuck around, in order to be
gratified. The gap was bridged, and the danger averted. (It
was Frank Sinatra. You waited, right?)
O The central idea of this excerpt is that Clint Eastwood was
not the original choice for the Dirty Harry movie.
O The central idea of this excerpt is that intrigue is the most
important way to create suspense.
O The author uses an analogy to compare his readers to the
characters of a Hollywood movie.
O The author uses a personal anecdote to show that
audiences are willing to wait for an answer.
please answerrr
Answer:
D: The author uses a personal anecdote to show that audiences are willing to wait for an answer
Explanation:
The main idea of the passage is that he's using a personal anecdote to give an example of how the suspense method works
Can someone please help me with these two questions I will mark you as the best answer
How does an enzyme influence a chemical reaction?
Answer:23
Explanation:yes it is
The number of waves that pass through a fixed point per second is the (amplitude, frequency, wavelength)
of the wave. This value increases when the (amplitude, frequency, wavelength)
of the wave decreases
Answer:
Frequency / Wavelength
Answer:
frequency and wavelenght
Explanation:
The changes in composition in an area over time is called
Answer:
Ecological Succession.
Explanation:
How is the AB blood group an example of codominant inheritance
Answer:
Explanation:
AB blood type is codominant because the red blood cells have the products of both the A and the B alleles of the ABO gene.
Hope that helped!
Replicating the texture of shark skin to inhibit the ability of bacteria to attach to medical surface is an example of what application of biotechnology
A.Biochemical engineering
B. Biomimicry
C. Bioprospecting
D. Environmental biotechnology
Answer:
Biomimicry
Explanation:
Limiting Factors that are Density Dependent are affected by the size of the population
True or False
Answer:
this would be true
Explanation: these factors increase whi is what you asked right
What is a drug?
What is the difference between medicines and recreational drugs ?
Give two examples of legal recreational drugs?
Give two example of illegal (against the law) drugs?
What is a depressant?
Give two effects that a depressant drug has on the body.
Give two long term effect of taking a depressant drug.
What is a stimulant?
Give one example of a legal stimulant and one example of an illegal stimulant.
What are the effects of taking a stimulant?
Answer:
recreational - enjoyment i.e. weed, alcohol (legal)
shrooms, lsd (illegal)
liver or lung failure
stimulant- helps asthma and other things example. dexedrine
the effects of taking stimulants is loss of appetite, increased heart rate, elevated blood pressure and body temperature, interrupted sleep patterns, panic, hallucinations, and irritability.
also a drug is a medicine or other substance which has a physiological effect when ingested or otherwise introduced into the body.
During photosynthesis,light energy is converted to chemical energy
Answer:
True
Explanation:
Because during photosynthesis carbon dioxide is formed which is a chemical
Answer:
True
Explanation:
Photosynthesis is the process in which light energy is converted to chemical energy in the form of sugars. In a process driven by light energy, glucose molecules (or other sugars) are constructed from water and carbon dioxide, and oxygen is released as a byproduct.
Down syndrome is a genetic disorder that is also called trisomy 21. A person with Down Syndrome has an extra copy of chromosome 21. What can you infer is most likely the genetic mutation that results in Down syndrome?
Answer: Down syndrome is a result of failed cell division
Explanation: A typical baby has 46 chromosomes however babies with down syndrome have an extra copy, chromosome 21 which is why down syndrome is also called trisomy 21
How many alleles for one trait are normally found in the genotype for an organism
Answer:
2
Explanation:
Which of the following facts are NOT true about dichotomous keys?
Answer:
Explanation:
B C
Which chromosome is involved in Prader Willi and Angelman Syndrome?
A) Chromosome # 46
B) Chromosome # 1
C) Chromosome # 15
D) Chromosome #23
Answer:
C.
Explanation:
Answer:
Chromosome 15
Explanation:
Which are forms of frozen water? Select three options.
dew
frost
hail
Answer:
frost and hail
Explanation:
dew is litteraly just a drop of liquid water. the other 2 are frozen water.
Answer:
Frost
Hail
Sleet
Explanation:
So i forgot what the genetic code is and how its read can somebody please be kind and help me..
Answer:
i d
Explanation:
True or False: Too much carbon in seawater prevents clams, snails, and other
sea animals from growing their shells.
Answer: False................
Answer:
False
Explanation:
Carbon is one of the most abundant resources for sea animals, and they actually need a lot of carbon to grow their shells.
Using the F.O. I. L. Method, what are the gam it possible for one parent with the following genotype: BbTt
Answer: i uh
Explanation: ??:\
Please select the word from the list that best fits the definition
makes up 21 percent of the atmosphere
-conduction
-convection
nitrogen
-oxygen
-Ozone
-radiation
-smog
-water vapor
Answer:
oxygen
Explanation:
The oxygen makes up 21% of the atmosphere. hope it helps.
Answer:
Oxygen
Explanation:
Oxygen makes up 21% of earths atmosphere while nitrogen fills up 78%.
The flow of energy moves in a circle through a food chain. The energy moves from the grass to the grasshopper. Next, the transfer of energy passes from the snake to the hawk. Finally, the fungi help by breaking down the hawk when it dies, and returns the energy to the grass. Where does the energy that is transferred through this chain originate? A) fungi B) grass C) grasshopper D) sun
Answer:
i think it is B grass
Explanation:
Grass obtains energy through the use of photosynthesis. Chlorophyll absorbs sunlight and uses its energy to convert carbon dioxide and water into carbohydrates.
Which happens during the second trimester?
O A. The vocal cords develop.
O B. The heart starts working.
C. Rhythmic breathing starts.
D. Blood begins to form.
Answer:
A
Explanation:
The heart starts working. Thus the correct option is B.
What happen during first trimester?From the time of conception, baby will grow and change inside uterus until he or she is born. Each trimester has a unique set of milestones. In the first trimester, your baby will grow from a fertilized egg into a moving fetus with eyes, ears, and working organs.
In the second trimester, baby’s features develop and expecting mother may be able to feel baby move. In the third trimester, baby will grow rapidly to get ready for birth.
For more information regarding trimester, visit:
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Question is in picture
How does light behave around opaque, transparent and translucent
Need answer ASAP please
NO copy and paste thanks!
Answer:
Transparent objects allow all the light to pass through them. Opaque ones allow no light to pass through. Translucent allows light to go through but the area in it is no visible to determine the object
Explanation:
Think of Transparent as a window u can see straight through it is clear.Think of Translucent as a window with cold fog on the window light can come through it but you can't see whats outside.Think of Opaque as a black chalkboard light reflect on it but light cannot go through it
Examine the picture of an onion root tip with cells in various stages of the cell cycle. A student claims that interphase is the longest stage of the cell cycle. Another student claims that mitosis is the longest stage. Using evidence from the photo, determine which student is correct and why. A) Mitosis is the longest stage because anaphase requires more time to separate chromatids. B) Interphase is the longest stage because chromosomes are visible in the majority of the cells. C) Mitosis is the longest stage because the majority of the cells in the photo are replicating their DNA. D) Interphase is the longest stage because the majority of the cells in the photo have uncondensed chromatin and are not dividing.
Answer:
B
Explanation:
the longest phase in the cell division is interphase because the DNA replication occurs in this phase
As per the image interphase is the longest stage because the majority of the cells in the photo have uncondensed chromatin and are not dividing. The correct option is D.
What is cell cycle?The cell cycle, also known as the cell-division cycle, is the sequence of events that occurs in a cell that causes it to divide into two daughter cells.
A cell cycle is the series of events that takes place in a cell as it grows as well as divides.
A cell spends the majority of its time in what is known as interphase, where it grows, replicates its chromosomes, and prepares for cell division. The cell then exits interphase, goes through mitosis, and divides completely.
Interphase is the longest stage, according to the image, since the maximum of the cells in the photo have uncondensed chromatin as well as are not dividing.
Thus, the correct option is D.
For more details regarding cell cycle, visit:
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