This pedigree shows the inheritance Leber congenital amaurosis (LCA) which is a type of hereditary blindness. Individuals with this disease lose their vision during childhood. 3. What is the inheritance pattern shown?
Answers
About the question: You will find the pedigree in the attached files
Answer:
Autosomal recessive inheritance
Explanation:
Autosomal recessive inheritance characterizes by the expression of the recessive trait. Two copies of these alleles are needed to express the recessive phenotype and no dominant alleles.
Let us assume that the diallelic autosomal gene has a dominant allele L that expresses the normal phenotype and the recessive allele l that expresses the altered phenotype. The pedigree would be as shown in the attached files.
To interpret the pedigree, remember that
Squares represent malesCircles represent femalesEmpty figures express normal/healthy/not affected individualsSolid black figures represent affected individuals
Leber congenital amaurosis (LCA) is a type of Autosomal recessive inheritance. Individual with this disease loses their vision during childhood.
What is Pedigree Analysis?The study of the inheritance of genetic traits in several generations of a human family in the form of a family tree diagram is called Pedigree analysis.
Two copies of these alleles are required to express the recessive phenotype and are responsible for the inheritance of LCA. As autosomal recessive inheritance expresses its trait when both the alleles of each parent are in recessive form and the resulted offspring shows the inheritance pattern.
Hence, LCA is an autosomal recessive inheritance caused by the expression of both recessive alleles simultaneously in an individual.
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Related Questions
What are Gametes cells?
Answers
Answer:
I think Gametes are mature male or female reproductive cells that fuse together resulting in a zygote during sexual fertilization. The key difference between somatic cells and gametes depends on the ploidy of the genome. Somatic cells consist of diploid (2n) genome while gametes consist of a haploid (n) genome.
Hope it help you!:)
Answer: Gametes are an organism's reproductive cells. They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome. ... In contrast, each egg cell, or ovum, is relatively large and non-motile.
Explanation: Hope this help :D
PLZZ HELP ASAP!!! 15 points!!!
Answers
Answer: B and C
Explanation: The sun always rotates on its axis because the Sun is fluid not solid, it spins faster at its equator (27 days) than at the poles (35 days). The Sun spins in the same direction as the planets orbit around it, which is not surprising as the Sun and the planets condensed from the same rotating disc of gas.
What genotypes are observed when you cross a Dd parent
with another Dd parent?
a. 100% DD
b. 75% DD and 25% dd
c. 50% DD and 50% dd
d. 25% DD, 50% Dd, 25% dd
Answers
Answer:
it is D. 25%DD ,50%Dd ,25%dd
If both the parents are heterozygous (Dd), the resulting offspring are 25%DD, 50%Dd, and 25%dd. So, the correct option is D.
What do you mean by genotypes?Genotypes may be defined as the ultimate combination of alleles of those genes which are selected for our study.
Here, both the parents carry the genotype Dd, when Dd is crossed with Dd, the resulting offspring are 1DD, 2Dd, and 1dd.
Therefore, if both the parents are heterozygous (Dd), the resulting offspring are 25%DD, 50%Dd, and 25%dd.
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Which pattem of wind flow is most likely to occur during a hot summer season in a coastal location?
А
From land to sea, toward areas of lower air pressure.
B.
From sea to land, toward areas of lower air pressure
С
From land to sea, toward areas of higher air pressure.
D
From sea to land, toward areas of higher air pressure
Answers
Answer:
B. From sea to land, toward areas of lower air pressure
Explanation:
The pattern of wind flow is most likely to occur from sea to land during a hot summer season in a coastal location due to difference of air pressure. In the summer season when the land is heated, the temperature of the air also increases and hot air rises up, as a result a region of low pressure is created at the surface. The air over the sea moves into this area of low pressure on the land. Hence, the direction of the wind is from the sea to the land during the day in summer season.
Why don’t we have lunar eclipses every month ?
Answers
Hope this helps, brainliest??
1. How do you get your zenith distance from the altitude of the Sun at solar noon?
2. How do you get your latitude from your zenith distance and the Sun's declination?
Answers
Answer: The zenith angle is the angle between the sun and the vertical. The zenith angle is similar to the elevation angle but it is measured from the vertical rather than from the horizontal, thus making the zenith angle = 90° - elevation.
Since it is South of the Zenith, we add the zenith distance to the declination to find our latitude: our latitude = the declination + the zenith distance = -17° + 39° = +22° (North latitude).
Explanation:
what is the branch of biology that deals which microorganisms?
Answers
Explanation:
Microbiology is the branch of biology dealing with the study of different aspects of microorganism.
Which statement best describes the motion of the plates along these boundaries that causes the earthquakes? The plates push apart from each other with no subduction. Subduction occurs with the less-dense plate sinking below the other plate. Subduction occurs with the more-dense plate sinking below the other plate. The plates smash together with no subduction.
Answers
Answer:
D). The plates smash together with no subduction.
Explanation:
As per the question, the last statement most adequately demonstrates the movement of plates i.e. 'the plates hit together without any detraction' through concurring boundaries causing the earthquakes to take place. The continuous smashing of tectonic plates with one another leads to the development of a pressure towards both the rock layers by the time this stress is released through a shaky or convulsive movement of the Earth. Thus, option D is the correct answer.
A simplified carbon cycle is depicted here. The release of carbon dioxide into the atmosphere can contribute to global warming.
Which statements describe the processes of forest fires, fossil fuel combustion, and plant respiration? Select ALL that apply.
A)
They occur under anaerobic conditions primarily.
B)
They are all directly caused by human intervention
They are primarily the result of microbial activity.
Eliminate
D)
They all occur in the presence of oxygen to release carbon dioxide.
E)
They each convert organic carbon-based molecules into carbon dioxide.
Answers
Answer:
i can help 123 and help with
A simplified carbon cycle is depicted here. The release of carbon dioxide into the atmosphere can contribute to global warming. The statements describe the processes of forest fires, fossil fuel combustion, and plant respiration are they occur under anaerobic conditions primarily, they are all directly caused by human intervention, and they are primarily the result of microbial activity. Thus, option A, B, and C are correct.
What is carbon dating?Carbon dating or radiocarbon dating has been known as the method to identify the age of any substance by using the properties of radiocarbon. The method has been developed in late 1940 at university of Chicago.
Carbon dating has been the process by which we can find the extrapolated data which stored by tree rings can be identified which thousands year old.
Carbon has been known as the one of the chemical elements. Along with hydrogen, nitrogen, oxygen phosphorus and sulfur carbon has a building block of biochemical molecule ranging from fats, proteins and carbohydrates.
Therefore, A simplified carbon cycle is depicted here. The release of carbon dioxide into the atmosphere can contribute to global warming. The statements describe the processes of forest fires, fossil fuel combustion, and plant respiration are they occur under anaerobic conditions primarily, they are all directly caused by human intervention, and they are primarily the result of microbial activity. Thus, option A, B, and C are correct.
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3. Which parts are located within the chloroplast? (Select all that apply.)
stroma
granum
xylem
phloem
Answers
Explanation:
As I think Stroma and granum are the correct answer.
There are two distinct regions present inside a chloroplast known as the grana and stroma. Grana are made up of stacks of disc-shaped structures known as thylakoids. The grana of the chloroplast consists of chlorophyll pigments and are the functional units of chloroplasts.
What was the discovery scientists made in the 1950's that led them to then accept Wegener's theory of Continental Drift?
Answers
Answer & explanation:
The theory of continental drift emerged a long time ago. When mapping some points on Earth, scholars suspected that the continents were united in the past.
Francis Bacon suggested in 1620 that the east coast of the South American continent and the west coast of Africa fit together perfectly, giving the impression that they had parted in the remote past. A similar observation to this had already been made by another scholar named Abraham Ortelius, around 1596.
A century later, hypotheses became a scientific theory with previously elaborated arguments. Then, the theory of Continental Drift was officially born, when the German Alfred Wegener formulated it in 1912, establishing that the Earth had been divided, in its slow fragmentation, into two great continents, Laurasia and Gondwana.
Can someone please check if the labels and everything on this diagram is correct.
please help me, it's urgent. I will mark brainliest, no links please
Answers
Explanation:
I think u are trying to make the structure of bacteria and in my science book I have this figure and I thought that I should help u
What is one effect the hydrosphere has on the lithosphere 1).Erosion of rocks 2).Evaporation of water 3).Heating of the core 4).Melting of the core
Answers
Answer:
1).Erosion of rocks
Explanation:
Erosion of rocks has effect of hydrosphere on the lithosphere. When the river and streams passing through a region, the water eroded the rocks that comes in their way with the passage of time as well as the bank of the rivers. The speed of erosion depends on the speed of the flow of rivers because speedy flow of rivers causes fast erosion of rocks so we can say that the erosion is the main effect of hydrosphere on the lithosphere.
Mushrooms and yeasts reproduce by spores and are composed of cells enclosed by cell walls. These organisms fall into which kingdom?
Answers
Answer:
Fungi kingdom.
Explanation:
Domains are the highest taxonomic category in which living beings can be grouped or divided. There are three domains: archaea, bacteria, and eukarya.
The eukarya domain is composed of the Protist, Fungi, Plantae, and Animalia kingdoms.
Kingdoms include different phyla closely related.
The Fungi kingdom includes yeasts, molds, and mushrooms. All of them are characterized by the same general aspects.
All the members of the kingdom
Lack mobility, growing on the ground, organic matter, or other surfaces. They all have a rigid cell wall composed of chitin. They grow like hyphae, which are cylindrical uniformed structures that might reach many centimeters in length.Heterotrophic nutrition. The species can not produce their own food, so they decompose organic matter and get the nutrients from there.Reproduction is by spores, which are resistant to adverse environmental conditions.
I WILL GIVE BRAINLIEST
Fossils usually form in which type of rock?
a. metamorphic
b. igneous
c. sedimentary
d. All of these commonly contain fossils.
Answers
Answer:
Sedimantry
Explanation:
I hope this helps!
Please explain why the following statement is TRUE:
A species that lacks variation among its members is more likely to go extinct than a species
with a lot of variation in traits.
Answers
Segment of chromosome is placed in the reverse order.
Translocation
Duplication
Deletion
Inversion
Answers
Answer: Inversion
Explanation:
15. How does a mother's age affect the likelihood of her having a baby with Down syndrome?
A. The likelihood increases substantially after age 40.
b
The likelihood decreases substantially after age 40.
C. Age has no effect.
d The likelihood increases at first, then decreases after age 20.
Answers
Answer:
A
Explanation:
name the process that has taken place when u put pebbles in water
Answers
15 POINTS AND BRAINLY FOR 1 MULTP. CHOICE QUESTION
Answers
Select the energy sources that produce greenhouse gases in the process of creating electricity.
a
natural gas
B
wind
C
geothermal
D
biomass
E
coal
F
gasoline
Answers
I believe it's A, E, and F but I may be wrong
hello please help i’ll give brainliest
Answers
Answer:
sunlight ofc
Explanation:
its simple
Answer:
Sunlight
Explanation:
The taller the plant, the more sunlight it will accumulate.
You're researching a steroid hormone that binds to a receptor inside the cell. Once the receptor binds to its hormone, the receptor moves into the nucleus of the cell. The result of hormone-receptor binding is that new mRNA molecules are made. The receptor is also a
Answers
Answer:
transcription factor
Explanation:
Transcription is the process by which a specific fragment of DNA (e.g., a gene sequence) is used as template to synthesize an RNA molecule, typically a messenger RNA (mRNA), which is then used to synthesize a protein by a process called translation. Transcription factors are proteins that bind to specific genomic sequences (e.g., promoter sequences) in order to alter the mechanism of transcription. Transcription factors function coordinately to stimulate or inhibit specific cellular processes (e.g., cell division, cell growth, cell migration, etc.) according to the cell type and stage of development. Transcription factors may act alone or form macromolecular complexes that stimulate or block the recruitment of the RNA polymerases (RNA pols), which are key enzymes required for transcribing a fragment of a DNA strand (e.g, a gene) into an RNA sequence during transcription.
4. The picture below shows a bird landing at a bird feeder outside a window. The image of this bird in the window is the result of light being: 1. Absorbed 3. Transmitted C. Reilected D. Retracted
Answers
The picture below shows a bird landing at a bird feeder outside a window. The image of this bird in the window is the result of light being, Reilected.
How would you describe diffraction?The diffraction, the scattered of waves around blocks. Diffraction takes place with sound; with electromagnetic radiation, such as light, X-rays, and gamma rays; and with very tiny moving particles such as atoms, neutrons, and electrons, which show wavelike effects.
Thus, option "D" is correct, The image of this bird in the window is the result of light being, Reilected.
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Learning Task 2 Write the word true or false if the statement is correct and if false change the underline word or words to make a statement correct
Answers
Complete question:
Write the word TRUE if the statement is correct and if FALSE change the underlined word or words to make the statement correct.
_______1. A molecular group consisting of a sugar molecule, a phosphate group and a nitrogenous base is a nucleic acid.
_______ 2. In a DNA molecule, a base pair would be composed of adenine and guanine.
_______ 3. Cytosine and adenine are purines.
_______ 4. During the replication of DNA, bonds are broken between the phosphate groups.
_______ 5. RNA contains the nitrogenous base uracil.
_______ 6. There are 20 different amino acids in a cell.
_______ 7. The coded message carried by messenger RNA is translated into polypeptides at organelles called chloroplasts.
_______ 8. The decoding of a messenger RNA message into a polypeptide chain is known as translation
_______ 9. A severe mutation may lead to cell death and may have no effect on the body.
_______ 10. Most mutation are harmful.
Answer:
FalseFalseFalseFalseTrueTrueFalseTrueTrueFalseExplanation:
_False_1. A molecular group consisting of a sugar molecule, a phosphate group, and a nitrogenous base is a nucleic acid.
Nucleotides: subunits or monomers composed of a sugar molecule, joined with a phosphate group and a nitrogenated base. The chain or sequence of nucleotides composes the polymer. Different nucleotides joined by their extremes compose the nucleic acid: DNA or RNA.
A molecular group consisting of a sugar molecule, a phosphate group, and a nitrogenous base is a nucleotide.
_False_ 2. In a DNA molecule, a base pair would be composed of adenine and guanine.
In the DNA molecule, Adenine (Purine) always pairs with Timine (Pyrimidine), while Guanine (Purin) pairs with Cytosine. A-T pair is united by 2 hydrogen bonds, and the G-C pair is united by 3 hydrogen bonds.
In a DNA molecule, a base pair would be composed of adenine and timine, or In a DNA molecule, a base pair would be composed of cytosine and guanine.
_False_ 3. Cytosine and adenine are purines.
Nitrogenated bases that form nucleic acids correspond to purines and pyrimidines. Adenine and guanine derive from purines, while Thymine and Citocine derive from Pyrimidines.
Guanine and adenine are purines.
_False_ 4. During the replication of DNA, bonds are broken between the phosphate groups.
During the replication of DNA, bonds are broken between the hydrogen groups.
_True_ 5. RNA contains the nitrogenous base uracil.
Instead of Timine, RNA contains uracil that pairs with adenine.
_True_ 6. There are 20 different amino acids in a cell.
_False_ 7. The coded message carried by messenger RNA is translated into polypeptides at organelles called chloroplasts.
When mRNA leaves the nucleus, meets a free ribosome in the cytosol. Into this organelle, it starts the protein building. Ribosomes read the mRNA code and begin protein synthesis by adding the correct amino acid using transference RNA.
The coded message carried by messenger RNA is translated into polypeptides at organelles called ribosomes.
__True__ 8. The decoding of a messenger RNA message into a polypeptide chain is known as translation
__True__ 9. A severe mutation may lead to cell death and may have no effect on the body.
_False_ 10. Most mutation are harmful.
A mutation is a change or alteration in DNI sequences that introduce new variants. Many of these are eliminated, but most of them might succeed and be incorporated into each individual. These mutations are the ones that have been selected by natural selection, leading to evolution.
Most mutation are not harmful
Based on structure, DNA molecules are composed of nucleotides and mutations in DNA are mostly harmful.
What is DNA?DNA refers to sequences of nucleotides which contain the genetic information of organisms.
Nucleic acids are chains of nucleotides.
Nucleotides are molecular group consisting of a sugar molecule, a phosphate group and a nitrogenous base.
Four nucleotides are present in DNA and they include:
adenine guanimecytidine andthymidineIn a DNA molecule, a base pair would be composed of adenine and guanine is false because adenine bonds to thymine, while guanine bonds to cytidine
Cytosine and adenine are purines is false because cytosine is pyrimidine while adenine is a purine
During the replication of DNA, bonds are broken between the phosphate groups is false because the bonds broken are hydrogen bonds.
RNA contains the nitrogenous base uracil is true as uracil is found in RNA in place of thymine in DNA.
There are 20 different amino acids in a cell is true as these amino acids are found in proteins.
The coded message carried by messenger RNA is translated into polypeptides at organelles called chloroplasts is false because protein synthesis occurs at the ribosomes.
The decoding of a messenger RNA message into a polypeptide chain is known as translation is true.
A severe mutation may lead to cell death and may have no effect on the body is false because mutations can cause death of organisms.
Most mutation are harmful is true because only free mutations are beneficial.
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the role of metal in oraganism
Answers
Answer:
Sorry if I'm wrong
Explanation:
Metals play very important roles in human life. Their absence may lead to several diseases in human body. Metals have also been exploited to design therapeutically useful drugs against several diseases like cancer, arthritis, ulcer, etc. Metals present in enzymes strongly facilitate their catalytic reaction.
The role of essential nutrient metal ions (Mg, Fe, Cu, Zn, Mn and Co) often deficient in our foodstuffs, although vitally essential in the function of the human organism as well as the different reasons for these deficiencies both in foods and in the human body have been studied.
What are two reasons plants might produce vegetative plants
Answers
Answer:
Vegetative reproduction, any form of asexual reproduction occurring in plants in which a new plant grows from a fragment of the parent plant or grows from a specialized reproductive structure (such as a stolon, rhizome, tuber, corm, or bulb).
Explanation:
PLSSS HELP GIVING BRAINLIEST
Which two phrases best summarize the events taking place in Step 2? O A. Cellular respiration OB. Releasing carbon dioxide into the atmosphere O C. Storing carbon dioxide in living organisms O D. Photosynthesis
Answers
Answer:
A and B are your answers
Explanation:
1. Identify the organelle shown.
2. Provide labels for parts 1, 2, 3 and 4
3. List two functions of this organelle?
Answers
This is the nucleus.
1. Nuclear envelope
2. Nucleoplasm
3. Chromatin
4. Nucleolus
It regulates the functions of the cell and contains the cell’s genetic information.
What is the largest reservoir
for carbon?
A. marine environments
B. atmosphere
C. producers
Answers
Answer:
A. marine environments
Explanation:
so, a. is just the correct answer. largest reservoir for carbon is just marine environments! yay
i hope this helped you, have a grand day