If Sally marries a man with alkaptonuria, there is a 50% chance that their child will have alkaptonuria.
The genotype of an individual refers to the sum total of genes that the individual received from its parents. Since Sally has a normal metabolism, Sally is Aa. Sally's mother is Aa while Sally's father and brother are aa.
If Sally parents have another child, using the Punnet square method, there is a 50% chance that the child will have alkaptonuria. If Sally marries a man with alkaptonuria, there is a 50% chance that their child will have alkaptonuria.
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a) Genotypes: : Aa (carrier of the alkaptonuria allele) ,Mother: Aa (carrier of the alkaptonuria allele)Father: aa (has alkaptonuria)Brother: aa (has alkaptonuria)
b) If Sally's parents have another child:The probability of the child having alkaptonuria (aa genotype) is 25%.The probability of the child being a carrier (Aa genotype) is 50%.The probability of the child having normal metabolism (AA genotype) is 25%.
c) If Sally marries a man with alkaptonuria (aa genotype):The probability of their child having alkaptonuria (aa genotype) is 50% (as Sally is a carrier).The probability of the child being a carrier (Aa genotype) is 50%.
The probability of the child having normal metabolism (AA genotype) is 0% (as the husband has alkaptonuria).
Sally: Aa (normal metabolism carrier)
Mother: Aa (normal metabolism carrier)
Father: aa (alkaptonuria)
Brother: aa (alkaptonuria)
b) If Sally's parents have another child:
Probability of the child having alkaptonuria (aa genotype) is 25%.
Probability of the child being a carrier (Aa genotype) is 50%.
Probability of the child having normal metabolism (AA genotype) is 25%.
c) If Sally marries a man with alkaptonuria (aa genotype):
Probability of their child having alkaptonuria (aa genotype) is 50% (as Sally is a carrier).
Probability of the child being a carrier (Aa genotype) is 50%.
Probability of the child having normal metabolism (AA genotype) is 0% (as the husband has alkaptonuria).
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Answer:
The correct answer would be skeleton
Explanation:
I had the same question
Archaeopteryx
Enantiornithes
Paleognathae
Answer:
A bird or feathered dinosaur is Archaeopterix.
Explanation:
Archeopteryx is an extinct genus of primitive birds, with intermediate characters between feathered dinosaurs and modern birds.
Archeopteryx lived in the Upper Jurassic Period about 150 million years ago, in what is now southern Germany, during a time when Europe was an archipelago of islands in a shallow warm tropical sea, much closer to the equator of what is now.
Answer:
A bird or feathered dinosaur if Archaeopteryx.
It consists of different layers of different thicknesses.
It allows visible light to pass through completely.
It contains gases that filter out ultraviolet radiation.
2. Matthew has recently learned that Earth’s atmosphere is made up of nitrogen, oxygen, water vapor, and many other trace elements. Which of the following is NOT a way in which gases in the atmosphere are helpful to life on Earth?
Carbon dioxide insulates Earth
Protection against radiation from the Sun
Barrier against violent storms and lightning
Oxygen stays within the atmosphere
3. Which of the following is a way the atmosphere helps maintain life on Earth?
The atmosphere helps maintain a moderate temperature.
The atmosphere draws water vapor from outer space.
The atmosphere has air currents that rotate the planet.
The atmosphere contains some gases that are toxic.
keep her skin protected. She wonders what else the atmosphere does that she takes for granted each day. The atmosphere allows which of the following to happen?
Meteorites to hit Earth’s surface
Chloroplasts producing oxygen
Reflection from the ocean's surface
Precipitation and the water cycle
5. Gases in the atmosphere are helpful to life on Earth because they offer protection from which of the following?
Poisonous gases from stars
Harmful radiation from the Sun
Collisions with other planets
Violent storms and lightning
6. Without the atmosphere, life on Earth would not be possible. Which of the following is NOT an explanation for how Earth’s atmosphere protects life on the planet?
It allows visible light to pass through completely.
It contains gases that filter out ultraviolet radiation.
It keeps Earth warm by trapping in heat.
It protects life from ultraviolet rays of light.
7. Alexander applies sunscreen to help provide protection from ultraviolet radiation. With what does the atmosphere provide protection for Earth?
Thick layers of ice clouds
Ozone in the upper atmosphere
Water vapor in the lower atmosphere
The reflective surface of the ocean
8. The atmosphere is often referred to as a blanket that covers Earth, keeping out harmful things and protecting life inside. Which of the following best represents a way in which the atmosphere helps maintain life on Earth?
The atmosphere provides air for oxygen.
The atmosphere controls the distance from the Sun.
The atmosphere helps rotate the planet.
The atmosphere provides protection from disease.
9. Which two gases in the atmosphere are essential to life on Earth?
Nitrogen and helium
Carbon dioxide and oxygen
Neon and argon
Helium and hydrogen
10. The atmosphere is made up of four different layers: the thermosphere, mesosphere, stratosphere, and troposphere. Which of the following is NOT true regarding the composition and structure of the the atmosphere?
The structure maintains safety against harmful UV rays.
The composition allows necessary gases for life on Earth.
The atmosphere allows Earth to rotate around the Sun.
The atmosphere is made up of nitrogen, oxygen, and a variety of gases.
Earth's atmosphere contains gases that filter out ultraviolet radiation. So, the correct options for 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 are D, A, A, D, B, A, B, A, B and C respectively.
The layer of gases that covers the Earth is known as the atmosphere. It is made up of roughly 78% nitrogen, 21% oxygen, and 1% additional gases like argon, carbon dioxide, neon, and methane. It is held in place by the gravity of the Earth. The troposphere, stratosphere, mesosphere, and thermosphere are the four principal layers of the atmosphere.
Gases in the atmosphere of Earth serve as UV radiation filters. CO2 acts as an insulator. The existence of life on Earth is not a result of atmospheric gases. A temperate temperature is kept by the atmosphere. The water cycle and precipitation are made possible by the atmosphere. Life on Earth benefits from gases in the atmosphere because they provide protection from harmful solar radiation.
Earth is protected by ozone in the upper atmosphere. The best way to think about how the atmosphere supports life on Earth is as the source of oxygen in the air. The atmosphere's carbon dioxide and oxygen are necessary for life on Earth.
So, the correct options for 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 are D, A, A, D, B, A, B, A, B and C respectively.
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Answer:
i think 1. is d and 2. is c i hope it helps
Explanation:
Erythrocytes get their color from a pigment called hemoglobin, which contains iron.
Erythrocytes, also known as red blood cells, derive their color from a pigment called hemoglobin. Hemoglobin binds to oxygen and carries it to different parts of the body. It contains iron, which gives erythrocytes their red color.
Answer: Become a veternarian.
b. viruses lack genetic material
c. virues have no protein structure
d. viruses are composed of protein only
e. viruses are composed of both protein and lipid
Answer: A) Viruses lack cytoplasm and organelles
Explanation:
Viruses are composed of DNA and RNA and the protein as the genetic material. Virus is the smallest pathogens and it is different from other pathogen as they cannot reproduced by itself.
Virus lack cytoplasm and organelles that is why they are differ from all the pathogens.
Viruses are composed of genetic material and the proteins and it does not contain lipids.
Therefore, option (A) is correct.
Viruses differ from other pathogens in several ways, including a. lacking cytoplasm and organelles, b. having genetic material, and c. having a protein structure.
Viruses differ from other pathogens in several ways. These can be noted as -
Therefore, options a, b, c, and d are incorrect. Option e, which states that viruses are composed of both protein and lipid, is incorrect as well. Although some viruses may have an outer lipid envelope, this is not a defining characteristic of all viruses.
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