The image above depicts a triangular piece of land, ACD, with two roads, segments BE and CF, cutting across the property. The owner wishes to add a fence along segment BC. The entire triangular piece of land is an isosceles triangle in which sides AC and CD both equal 9 miles. Segment CF represents the perpendicular bisector of the 13 mile-long base. If triangles BKC and FKE, formed from the intersection of the two roads, are congruent and segment AE is equal to side CD, what is the length of segment BC?
Select one:
A. 2.5 miles
B. 3.0 miles
C. 3.5 miles
D. 4.0 miles
Answers
Answer:
A. 2.5 miles
Explanation:
I completed it n got 100 lol
Related Questions
Eye color in a particular strain of fly is influenced by one gene with two alleles: a dominant allele that results in red eyes and a recessive allele that results in sepia eyes. A red-eyed female from a true-breeding population is mated with a sepia-eyed male. The Fl offspring are all red-eyed. The Fl flies are allowed to interbreed, producing the following in the F2 generation.
Females: 40 red eyes; 13 sepia eyes
Males: 39 red eyes; 11 sepia eyes
Which of the following best describes the likely mode of inheritance for the eye-color gene?
a. The eye-color gene is likely autosomal because males and females have similar phenotype ratios.
b. The eye-color gene is likely autosomal because more females have sepia eyes than males do.
c. The eye-color gene is likely sex-linked because the males and females have similar phenotype ratios.
d. The eye-color gene is likely sex-linked because the males and females display both phenotypes.
Answers
Answer:
The correct option is a. The eye-color gene is likely autosomal because males and females have similar phenotype ratios.
Explanation:
Available data:
Eye color is influenced by a diallelic gene R dominant allele results in red eyesr recessive allele results in sepia eyesCross: true-breeding red-eyed female with a sepia-eyed maleF1: 100% red-eyed.F2: Females: 40 red eyes; 13 sepia eyesMales: 39 red eyes; 11 sepia eyes
77% of the total progeny has red eyes and 23% has sepia eyes.
Among females, 75% is red-eyed, and 25% is sepia-eyed
Among males, 78% is red-eyed, and 22% is sepia-eyed.
The general phenotypic ratio is 3:1
If the eye-color gene was sex-linked, the phenotypic ratios would be different. There would be a higher proportion of red-eyed females than red-eyed males. Females would only express red eyes, while males would express red and sepia eyes. This is
Cross: X⁺X⁻ x X⁺Y (Note: The symbol + represents the allele R
Phenotype: red-eyed both and the symbol - the allele r)
Gametes) X⁺ X⁻ X⁺ Y
Punnett square) X⁺ X⁻
X⁺ X⁺X⁺ X⁺X⁻
Y X⁺Y X⁻Y
F2) 3/4 of the whole progeny would be red-eyed
1/4 of the whole progeny would be sepia-eyed
BUT
Females: 100% red-eyed
Males: 50% red-eyed and 50% sepia-eyed
These proportions are not coincident with the exposed real proportions
So,
c. The eye-color gene is likely sex-linked because the males and females have similar phenotype ratios.
If this gene was sex-linked, Males and females would not have similar phenotype ratios. This is FALSE.
d. The eye-color gene is likely sex-linked because the males and females display both phenotypes.
If this gene was sex-linked, Males would display both phenotypes, but females would only be red-eyed. This is also FALSE.
According to this, we can assume that this is an autosomal gene. If this is true, then
Cross: Rr XX x Rr XY
Gametes) RX, RX, rX, rX
RX, RY, rX, rY
Punnett square:
RX RX rX rX
RX RRXX RRXX RrXX RrXX
rX RrXX RrXX rrXX rrXX
RY RRXY RRXY RrXY RrXY
rY RrXY RrXY rrXY rrXY
F2) From the whole progeny
12/16 = 3/4 = 75% would be red-eyed 4/16 = 1/4 = 25% would be sepia-eyedPhenotypic ratio 3:1
Among females
6/8 = 3/4 = 75% would be red-eyed, R-XX 2/8 = 1/4 = 25% would be sepia-eyed, rrXXPhenotypic ratio 3:1
Among males
6/8 = 3/4 = 75% would be red-eyed, R-XY 2/8 = 1/4 = 25% would be sepia-eyed, rrXYPhenotypic ratio 3:1
The phenotypic ratio in all cases are 3:1.
b. The eye-color gene is likely autosomal because more females have sepia eyes than males do.
Both males and females exhibit sepia eyes in equal proportions. This is FALSE
a. The eye-color gene is likely autosomal because males and females have similar phenotype ratios.
Males and females do have similar phenotype proportions of red eyes and sepia eyes. This is TRUE
What structures have parasite worms lost? What structures/organs are expanded?
Answers
Explanation:
Something that is lacking, is a circulatory system. Instead of a typical circulatory system flatworms exchange oxygen with the air outside through diffusion. This is the process by which gases will pass through a membrane from an area of high concentration to an area of low concentration.
The phase of mitosis that is characterized by the formation of chromatids is
___
Answers
Answer:
The phase of mitosis where chromatids are formed is Metaphase
What conclusion can you draw from the results shown?
A)The amount of the drug was decreased to achieve the same effect.
B) The mouse is in a state of tolerance.
C) The mouse is suffering from withdrawal symptoms.
D) The amount of drug injected was the same throughout the 7 weeks.
Answer and I will give you brainiliest
Answers
Answer:
B) The mouse is in a state of tolerance.
A cluster of cases of legionellosis have occurred in your neighborhood. People with the illness have cough, fever, shortness of breath, chest pain and sometimes diarrhea. The illness is caused by the bacterium Legionella pneumophila, a facultative intracellular parasite that survives in certain ameba. The organism has an absolute requirement for L-cysteine. Typically, the organism is grown on buffered charcoal yeast extract (BCYE) agar. In some labs, samples containing suspected L. pneumophila are cultured on traditional BCYE medium as well as BCYE medium lacking L-cysteine. How would L. pneumohila be identified in this situation
Answers
Answer:
The correct answer is - comparing the presence of an essential component of the L. pneumophila that is cysteine.
Explanation:
As we know that L-cysteine is essential for the organism L. pneumophila to grow its colonies. The identification is easy in this situation by comparing the two cultured on the traditional BCYE medium and BCYE medicum without L-cysteine.
Colonies that grow on traditional BYCE medium are likely L. pneumophila as they required L-cysteine but not on BYCE medium lacking cysteine.
I NEED HELP ON BOTH ANSWER AS QUICKLY AS POSSIBLE!!
Bc
Answers
Answer:
What do you need help with?
PLEASSEEE HELP ASAP THANKS
Answers
Answer:
1,3 and 5.............
What is the most common stimulant drug used today?
A.Heroin
B.Cocaine
C.Caffeine
D.Alcohol
Answers
Answer:
B. cocaine
Explanation:
Pls someone help its a very easy question also don’t worry about the dot I accidentally did that
Answers
PLEASE HELP!!!!
Explain what causes a muscle to go into rigor mortis. Your answer should include the circumstances which cause it, as well as why those circumstances cause the effect (what is happening in the muscle at a molecular level which causes the stiffness).
Answers
Explanation:
Rigor mortis develops as the body's energy source (adenosine triphosphate [ATP]) is depleted. Muscle fibers require ATP for relaxation; once depleted, actin and myosin proteins remain complexed, resulting in stiffening of the muscles..
Thanks my answer and vote it 5 star and Mark it in brainliest answers please please please please please please please please please please please please please please please please please please please please please please
how does the process of translation convert information from a dna code to an rna code?
a. from a DNA code to an RNA code
b. from an amino acids code to a nucleic acid code
c. from an RNA code to a DNA code
d. from a nucleic acid code to an amino acid code
Answers
Answer:B
Explanation:
The nitrogen bases in DNA code for the sequence of amino acids that make up a protein
Answer:
its B
Explanation:
WRONG ANSWERS ONLY!!! What is coastal runoff and what does it affect
Answers
Answer:
The sky.
(Purposely wrong.)
Which term indicates that a single gene has two or more alleles present in a population?
A. Genotype
B. Point mutation
C. Polymorphism
D. Pleiotrophy
Answers
Genetic polymorphism is the existence of multiple alleles of a single gene.
What are genes?Genes are regions of DNA which code for a particular protein or any other gene product.
Genes can exists as a single copy or as multiple copies.
Alleles are alternate forms of a particular gene.
A single gene that has two or more alleles present in a population is known as genetic polymorphism.
Therefore, multiple alleles of a single gene is known as genetic polymorphism.
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Platinum is a catalyst humans use in fuel cell. Although for green energy humans use some bacteria that releases enzymes such as hydrogenase to perform functions as platinum in fuel cell. This is an example of
a. Biofilm
b. Biosensing
c. Biomimicry
Answers
Answer:
B
Explanation:
90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love u
How do diet and weigh loss companies use bias to sell their products
Answers
HELPPPOPPPPPPPPPpppppp
Answers
Answer:
SeA URCHINS (SOOOOOOOOOOOOOOO SURE ABOUT MY ANSWER) dont blame me if you get it wrong because i said im sure
Explanation:
Oompah’s with type O blood receive a tax break. ophine oompah has type a blood, but he wants a wife that will give him children with type o. what blood type should he request on his dating survey? what must Opine’s blood type be in order to produce offspring with type O blood?
Answers
Answer:
He should request type O on his dating survey.
Opine's blood type must be AO to have a higher probability of producing O offsprings.
Explanation:
O blood type is recessive so, when it is paired with another blood type like B or A, these would be dominant, giving B and A blood, respectively.
O blood type results are possible thanks to OO genotypes.
If the man's blood type is A, to have a higher chance of producing OO offsprings, his blood should be AO. The other possibility is that he has AA blood, which will result in a low probability of OO offsprings.
As regards the mother, her blood type should be OO.
We can see this more clearly in Punnet Square.
║ A ║O
O║AO║OO
O║AO║OO
There is a 50% of probability of having O offsprings with AO and OO.
║ A ║A
O║AO║AO
O║AO║AO
With AA and OO, the probability is 0%
║ A ║O
A║AA║AO
O║AO║OO
With both parents having AO, blood the probability of having a OO offspring is 25%.
In conclusion, the higher chances of producing a OO offspring is if the parents are AO and OO.
Plastics are made from oil/petroleum and have both benefits for society and harmful effects on the environment
True
False
Answers
Answer: It is True I just took the test
Explanation:
When you flex your knee, where are the fulcrum and the load? Where is the muscle that provides the effort located?
Answers
Explanation:
the fulcrum is the knee joint
the load is probably the radius and ulna with the muscle on it
while the effort could be tendons and the muscle on the femur
After the pocket of magma slowly cools, what does the magma become?
A. Intrusive igneous rock
B. Extrusive igneous rock
C. Sedimentary rock
D. Metamorphic rock
Answers
Answer:
When magma slowly cools,it becomes an igneous Rock
Explanation:
An intrusive igneous rock is when magma is trapped far down in earth.
Extrusive igneous rock is formed when exits and cools above the surface of earth.
competition a type symbiotic relationship is where
Answers
Answer:
they r ecological, not symbiotic
Helppppppppppppppppppppppppp
Answers
Answer:
agriculture
Explanation:
Slash-and-burn agriculture, method of cultivation in which forests are burned and cleared for planting. Slash-and-burn agriculture is often used by tropical-forest root-crop farmers in various parts of the world and by dry-rice cultivators of the forested hill country of Southeast Asia
-2 In a pasture ecosystem a large portion of the biomass is represented
pasture vegetation compared to animals that feed on these grasses.
illustrated by such a pasture ecosystem is called alan...
A food chain.
B food web.
с ecological pyramid.
D energy flow.
Answers
a
Explanation:
im not really sure about the answer i chosed but maybe yes
The first stage of the cell cycle during which the cell matures and prepares to divide and copies
its DNA; The stage the cell stays in the most?
Answers
The cell multiplies and creates a copy of its DNA during interphase. In the mitotic (M) phase, the cell divides into two new cells by dividing its cytoplasm and DNA into two sets.
What is the main role of interphase stage of cell cycle?A cell consumes the bulk of its time in what is known as interphase, where it creates, duplicates its chromosomes, and acquires available to split. The cell then moves interphase, goes direct mitosis, and completes dividing.
The cell multiplies and the nuclear DNA is duplicated during interphase. The mitotic phase immediately follows interphase.
Chromosomes that have been duplicated are separated and distributed across daughter nuclei during the mitotic phase. Usually, the cytoplasm is divided as well, producing two daughter cells.
Therefore, The first stage and the stage the cell stays in most is Interphase.
Learn more about interphase stage here:
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In a separate study, 68 rock pocket mice were collected from four different, widely separated areas of dark lava rock. One collecting site was in Sonora, Mexico. The other three were in Chihuahua, Mexico. Dr. Nachman and colleagues observed no significant differences in the color of the rocks in the four locations sampled. However, the dark-colored mice from the three Chihuahua locations were slightly darker than the dark-colored mice from the Sonora population. The entire Mc1r gene was sequenced in all 68 of the mice collected. The mutations responsible for the dark fur color in the Sonora mice were absent from the three different populations of Chihuahua mice. No Mc1r mutations were associated with dark fur color in the Chihuahua populations. These findings suggest that adaptive dark coloration has occurred at least twice in the rock pocket mouse and that these similar phenotypic changes have different genetic bases.
Answers
Complete question:
In a separate study, 68 rock pocket mice were collected from four different, widely separated areas of dark lava rock. One collecting site was in Sonora, Mexico. The other three were in Chihuahua, Mexico. Dr. Nachman and colleagues observed no significant differences in the color of the rocks in the four locations sampled. However, the dark-colored mice from the three Chihuahua locations were slightly darker than the dark-colored mice from the Sonora population. The entire Mc1r gene was sequenced in all 68 of the mice collected. The mutations responsible for the dark fur color in the Sonora mice were absent from the three different populations of Chihuahua mice. No Mc1r mutations were associated with dark fur color in the Chihuahua populations. These findings suggest that adaptive dark coloration has occurred at least twice in the rock pocket mouse and that these similar phenotypic changes have different genetic bases.
How does this study support the concept that natural selection is not random?
Answer:
The study supports the concept that natural selection is not random because in different areas with the same or very similar environmental characteristics, the same phenotype was produced by different types of mutations.
Explanation:
All of the sampled animals are inhabiting dark substrate. Probably animals needed to camouflage to survive. Natural selection must have driven them to produce dark color, similar to the substrate color. So animals from the different regions suffered different mutations that drove them to have almost the same dark fur color. The environmental condition is favoring the same phenotype.
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Which animal will use a hollowed-out tree stump as a home?
O A) a beaver
OB) a bear
OC) an eagle
OD) a rabbit
Answers
Bears hibernate in roots, rock crevices, And hollow trees. Sometimes the den is not much larger then the bear
What percent of energy is transferred from the sun to the level indicated? (3 points)
50 percent
100 percent
90 percent
10 percent
Answers
Answer:
It can
be explained with the help of ten percent law which
states that only 10 percent of the total energy available
at any trophic level is passed on the higher trophic level .
Most of the energy is lost as heat or is used in the
process of cellular respiration.
Explanation:
You have been studying two Hippogriff traits as a senior graduation project at Hogwarts (because you are magical), beak size (big beaks, B, are dominant to small beaks, b) and feather color (brown feathers, F, are dominant to white feathers, f). You mate two brown, big-beaked Hippogriffs and obtain the following results: 15 of the baby Griffs are brown and big-beaked; 4 of the baby Griffs are white are big-beaked; and 1 of the baby Griffs is white and small-beaked. What are the genotypes of the parent Hippogriffs
Answers
Answer:
BbFf is the genotype of parent Hippogriffs
Explanation:
Given -
Big beaks, B, are dominant to small beaks, b.
Brown feathers, F, are dominant to white feathers, f.
Two brown, big-beaked Hippogriffs are mated to produce 15 brown and big-beaked; 4 white and big-beaked; and 1 white and small-beaked offspring
The genotype of parents is BbFf
In rabbits, black fur (B) is dominant to white fur (b) A purebred black furred male is bred with a female that had the recessive white fur
Answers
Answer:
BB x bb
Bb
Bb
Explanation: When a purebred dominant trait is bred with a purebred recessive trait then the offspring will always have the dominant and recessive trait.
Do natural hazards always become natural disasters? What are some things that people can do that might influence whether or not a natural hazard will become a natural disaster?
Answers
Answer:
SLLLW
Explanation: