Answer:
6.25%
Explanation:
Given that:
The trait of a female fruit fly that is heterozygous for red eyes = XRXr; &
The trait of a white-eyed male is XrY_ ;
since Y is dominant y; the male trait can either be XrYR or XrYr
So, let assume that it is XrYr
Then; if each trait self crossed; we have:
XRXr = XX Xr XR Rr
XrYr = XY Xr rY rr
Thus, the punnet Square can be computed as:
XX Xr XR Rr
XY XXXY XXYr XXYR XRYr
Xr XXXr XXrr XXRr XRrr
rY XrYX XxYr XrYR RrYr
rr XrXr Xrrr XrRr Rrrr
∴
the percentage of offspring that would have white eyes XrY_ is:
1/16 = 0.0625
= 6.25%
Can someone help me plz n ty
2. What is a pedigree?
Answer:
please give brainlestExplanation:
1the record of descent of an animal, showing it to be purebred.
a purebred animal.
2the recorded ancestry, especially upper-class ancestry, of a person or family.
Answer: the origin and the history of something
Explanation:
Pedigrees use a standard set of symbols to make them easier to understand. Males are represented by squares, while females are represented by circles. Parents are connected by horizontal lines, and vertical lines stemming from horizontal lines lead to the symbols for their offspring
Which molecule never moves across a biological membrane to any other locations in a cell?
Molecules that cannot easily pass through the bilayer include ions and small hydrophilic molecules, such as glucose, and Macromolecules, including proteins and RNA.
Describe the environmental advantages and disadvantages of using hydroelectric power to generate electricity in the UK.
(6 marker)
Answer: Hydropower is generally available as needed; engineers can control the flow of water through the turbines to produce electricity on demand.
Explanation:
Answer:
Impact on Fish. To create a hydro plant, a running water source must be dammed.
Limited Plant Locations. While hydropower is renewable, there are limited places in the world that are suitable for plant construction.
Higher initial Costs.
Carbon and Methane Emissions.
Susceptible to Droughts.
Flood Risk.
explanation:
Hydroelectric power is energy created using the power and movement of flowing or falling water. It currently makes up only around 2.2% of Britain's total electricity supply, but has a long history in the country, having first been harnessed in 1878 to power the lights of Cragside country house in Northumberland. Globally, hydropower accounts for around 17% of all energy production, so should the UK rethink its approach to going green.
Do you agree with this quote? Explain your reasoning using your understanding of the genetics of skin color.
Answer: No
Explanation:
There is no quote to see therefore I cannot agree.
Which experiment could the scientists use that would best determine if these tiny structures are spores?
Answer:
The experiment that scientists could use that would best determine if the tiny structures are spores is called Opto-Electronic Imaging and Imaging Processing.
Explanation:
Optoelectronics speaks to the body of knowledge and of electronic devices that source, detect and control light and how they are used or applied. It is founded on the quantum mechanical effects of light on electronic materials.
Besides Optoelectronic Imaging, there are several other techniques that can be used to identify spores. Some of them are:
1. The culture-based methods: These methods involve the growing of spores on an agar plate and on the enumeration of colony units formed therein.
2. Culture-independent methods: These methods are based on
the counting of spores under an electron microscope. This method utilizes the hybridization of DNA for the detection of pores. Opto-electric imaging is preferred and considered more efficient because it is faster than all the above processes that have been mentioned. The above processes have the disadvantage of time-consumption.
Cheers
In your own words describe the Theory of Evolution and Natural selection
the Final Phase in cell division in which the parent cell splits into two new daughter cells is called ?
Answer:
Telophase
Explanation:
(brainliest if right!) How is the dispersive model different from the semiconservative model of DNA replication?
1. In the dispersive model, each strand of both daughter molecules contains a mixture of old and newly synthesized DNA, and in the semiconservative model, each new double helix consists of one old and one new strand.
2. In the dispersive model, the old double helix is degraded, and in the semiconservative model half of its nucleotides are used in the construction of two new double helices.
3. In the dispersive model, one of the two resulting double helices is made of two old strands, and in the semiconservative model the other is made of two new strands.
4. In the dispersive model, one strand of the new double helix is made of DNA, and in the semiconservative model the other strand is made of RNA.
Why are chromosomes so important that they must be precisely and correctly duplicated, sorted, and distributed when one cell divides into two daughter cells?
Answer: It is important that the daughter cells have a copy of every chromosome, so the process involves copying the chromosomes first and then carefully separating the copies to give each new cell a full set.
Explanation:
In mitosis a cell divides to form two identical daughter cells.
When marine animals die, their shells decay into limestone. When the limestone is exposed, _____ is released. This is a process known as _______________.
Answer:
fossilization
Explanation:
i dont know the first answer but the process is known as fossilization.
Answer:
CO2, erosion
Explanation:
just on my APES hw
When vegetables and flowers are grown in greenhouses in the winter, their growth rate greatly increases if the CO2 level is raised to two or three times the level in the natural environment. What is the biological/chemical basis for the increased rate of growth?
Refer back to your lab on photosynthesis and your first assignment in unit 4 on photosynthesis
You must discuss the chemical process of photosynthesis and you have to tie the products made in photosynthesis to growth. You have to also tie this into cellular respiration.
Answer:
co2 ,water,sunlight is gained rapidly by plants and they grow faster.as
co2 ,water,sunlight is responsible for development of plants.
Does DNA in prokaryotes and eukaryotes use the same nitrogenous base pairs?
Answer:
Ukaryotes consist of membrane bound nucleus whereas prokaryotes lack a membranebound nucleus.
Explanation:
Ukaryotes consist of membrane bound nucleus whereas prokaryotes lack a membranebound nucleus. Prokaryotic DNA is doublestranded and circular. ... The main difference between prokaryotic and eukaryotic DNA is that prokaryotic DNA is found in the cytoplasm whereas eukaryotic DNA is packed into the nucleus of the cell.
No, DNA in prokaryotes and eukaryotes does not use the same nitrogenous base pairs.
What is DNA?Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.
Moreover, deoxyribonucleic acid (DNA) is a molecule that contains the biological instructions that make each species unique. DNA, along with the instructions it contains, is passed from adult organisms to their offspring during reproduction.
Therefore, in all living things, DNA is essential for inheritance, coding for proteins, and providing instructions for life and its processes. DNA dictates how a human or animal develops and reproduces, and eventually dies.
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1. Describe the process of transcription, its machinery, and end products. Use vocabulary terms
in your description.
Answer: In transcription, the DNA sequence of a gene is transcribed (copied out) to make an ... In biology, transcription is the process of copying out the DNA sequence of a gene ... in which information from a gene is used to construct a functional product ... As it "reads" this template one base at a time
Explanation:
Transcribe the DNA
5' GGCTAATTCGAT 3
SHARK
Answer:
How do your cells know what to do? Just like builders have blueprints to tell them how to build a house, your cells also have instructions. Your cells' instructions are molecules of DNA.
What is DNA?
DNA is the material that makes up our chromosomes and stores our genetic information. When you build a house, you need a blueprint, a set of instructions that tells you how to build. The DNA is like the blueprint for living organisms. The genetic information is a set of instructions that tell your cells what to do.
DNA is an abbreviation for deoxyribonucleic acid. As you may recall, nucleic acids are a type of macromolecule that store information. The deoxyribo part of the name refers to the name of the sugar that is contained in DNA, deoxyribose. DNA may provide the instructions to make up all living things, but it is actually a very simple molecule. DNA is made of a very long chain of nucleotides. In fact, in you, the smallest DNA molecule has well over 20 million nucleotides.
Explanation:
Photochemical smog is the result of nitrogen and carbon, often from car exhaust, reacting in sunlight. Which describes something that would likely decrease the amount of smog over time?
A)
a decrease in gasoline prices
B)
an increase in the number of cars on the road
C)
a decrease in the price of cars
D)
an increase in cars that use gasoline efficiently
Answer:
D
Explanation:
decrease in prices will cause more driving which causes the smog
increase of cars on the road would cause more smog
decrease in car prices=more people buying cars to drive which causes more smog
what is an eclipse ? please explain
Answer:
An eclipse is an astronomical event that occurs when an astronomical object or spacecraft is temporarily obscured, by passing into the shadow of another body or by having another body pass between it and the viewer. This alignment of three celestial objects is known as a syzygy
Explanation:
Answer:
An eclipse is an astronomical event that occurs when an astronomical object or spacecraft is temporarily obcured.
1.
The bud shown in the diagram below was produced by asexual reproduction. Which process is responsible for the formation of the bud?
2 Asexual reproduction differs from sexual reproduction in that, in asexual reproduction..
(a) new organisms are usually genetically identical to the parent
(b) the reproductive cycle involves the production of games
(c) nuclei of sex cells fuse to form a zygote
(d) offspring show much genetic variation
Answer: 1. Mitosis
2. Answer A.
Explanation:
Stick insects that reproduce asexually are less biologically diverse because they can't evolve as quickly as species that reproduce sexually can. Thus, option A is correct.
What is role of asexual reproduction in evolution?Asexual reproduction, in contrast to sexual reproduction, only contributes to genetic variety in the population if a chance mutation in the organism's DNA is passed on to the progeny.
Evolution can occur gradually. Asexual creatures often evolve relatively quickly following a dramatic mutation and do not need as many generations to accumulate adaptations as do populations that reproduce sexually.
Asexual reproduction has the benefit of allowing for rapid population growth under the right circumstances. You only require one parent. Since you don't require a partner, it is more time and energy efficient.
Therefore, new organisms are usually genetically identical to the parent.
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The sequence of DNA ATCAGCGCTGGC is part of a gene. How
many codons are coded for by this segment?
Answer:4
Explanation:
what is the mystery element? is this a metal, nonmetal, or metalloid?
This is a metal!
I believe this is a metal because non-metal can be cut out instantly as this element shown has a metallic luster. Metalloids can be removed as they are worse at the conduction of electricty than metals, and all of the other properties listed are properties held by metals.
(Yes this is just my old answer but only because it is really the same reasoning)
Hope this helps, if not, comment below please!!!
:L
The punnet square below is set up to determine the probability of the child of a certain couple having freckles.
Which of the following belongs in the upper right square
A.FF
B.F
C.Ff
D.ff
Answer:
I
V
Answer:
below
Explanation:
I'm guessing that the punet square would go like this;
F f
F I I I
____
f I I I
Therefore;
F f
F I FF I Ff I
______
f I Ff I ff I
Concluding;
Your answer would be C. (Ff)
Because; In the top right, F,f is is present.
Please please help me its for a grade :(
According to the equation 2H + O --> H20, How many moles of Oxygen would be required to react completely with 15 moles of Hydrogen?
Explanation:
2moles-------1
15moles------x
X=7.5
Read these sentences from the text.
“Some scientists expect an increase in so-called 'extreme weather' events, such as hurricane and floods. Others foresee a rise in levels of sea water.”
Which word could best replace "foresee" as used in this sentence?
А. forecast
B. glimpse
С. pretend
D. discover
Which blood cell is most abundant?
After a glucose molecule is made, what molecule(s) is/are left over?
Answer:
When one molecule of glucose is broken down, it can be converted to a net total of 36 or 38 molecules of ATP. This only occurs in the presence of oxygen.
please help me this is the last question for my hw :D
Which statement is true about a relationship between DNA, a gene and a chromosome?
A gene is similar to DNA in structure but different in function,
O A gene is similar to DNA in function but different in structure.
A gene is made up of small segments of chromosomes.
O A gene is made up of a small segment of DNA.
Answer:
A gene is made up of a small segment of DNA.
Explanation:
If mom and dad have green eyes, you might inherit the trait for green eyes from them.
Cholesterol is an example of a ______________, one of the main classes of organic compounds.
Answer:
steroid family
Explanation:
Chemically, cholesterol is an organic compound belonging to the steroid family; its molecular formula is C27H46O.
How can mutation positively help organisms?
Mutations help organisms adapt better in their environment.
Mutations can extend organisms life.
Mutations can change the environment.
Answer: mutations can change the environment.
Explanation: