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Complete question: Sickle-shaped red blood cells result from a mutation in the gene that codes for hemoglobin. This mutation results in sickle-cell anemia. A partial sequence of bases from a normal hemoglobin gene and a sequence that results in sickle-cell anemia are shown below (the diagram is in the attached file)

What type of mutation is depicted in this sequence?

Answer:

The type of mutation is known as SUBSTITUTION.

Explanation:

Sickle cell anaemia is an inherited disease caused by abnormal shape of the red blood cell. This abnormal red blood cell contains less haemoglobin and cannot transport oxygen efficiently round the body. Sickle-shaped (abnormal) red blood cells result from a MUTATION in the gene that codes for hemoglobin.

Mutation is the random changes in DNA that alters genetic information and so introduce new characteristics. The different categories of mutations include:

--> Chromosomal mutation and

--> Point mutation.

SUBSTITUTION is a type of point mutation in which one base is incorrectly added during replication and replaces the pair in the corresponding position on the complementary strand. From the diagram, a partial sequence of bases from a normal hemoglobin gene and a sequence that results in sickle-cell anemia, shows a substitution of an A for the middle T. This leads to GUA in the messenger RNA, which specifies the amino acid valine. The substitution of valine for glutamic acid at this particular position alters the chemistry of the hemoglobin such that it sticks together if it is not binding oxygen, creating sickling of the red blood cells.

Answer:D

Explanation:

The fetus develops toenails, lips, and eyelashes is the change that takes place during the third trimester of a woman's pregnancy.  Therefore, option (B) is correct.

By the third trimester, which begins around the 28th week of pregnancy and lasts until birth, the fetus has already formed most of its organs and body parts. During this stage of pregnancy, the fetus undergoes significant growth and development. This includes the development of toenails, lips, and eyelashes. Additionally, the fetus begins to accumulate body fat, and its brain undergoes rapid development.

To answer the other options, the formation of teeth begins during the embryonic stage, which occurs in the first trimester. The mother's uterine contractions typically do not begin until labor, which occurs at the end of the third trimester or later. The fetus's hands and feet appear during the embryonic stage, specifically around the 6th week of pregnancy.

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Answer:

C

Explanation:

due to all the other questions come naturally that stresses the ecosytem

Answer:

Noble Gases

Explanation:

Answer:

Carbohydrate.

Explanation:

The most abundant molecule that is present in the digestive system is the carbohydrates because the food contains higher amount of carbohydrates. The breakdown of carbohydrates leads to the presence of more glucose concentration in the stomach. The concentration of fats and proteins are low due to the presence of low amount in the food that the person can eats. Fats are converted into fatty acids while on the other hand, proteins are converted into amino acids.

Answer: A karyotype is simply a picture of a person's chromosomes. In order to get this picture, the chromosomes are isolated, stained, and examined under the microscope. Most often, this is done using the chromosomes in the white blood cells. A picture of the chromosomes is taken through the microscope.

Explanation:

Karyotypes are prepared from mitotic cells that have been arrested in the metaphase or prometaphase portion of the cell cycle when chromosomes assume their most condensed conformations. A variety of tissue types can be used as a source of these cells.

Hope this was helpful and have a great one!

Answer: The answer is Oxygen.

Answer:

D - cost of purchasing

Explanation:

Solar panels use the sun to operate which has no cost so the answer is not C

The sun does not create green house gases and has nothing to do with pollution so the answers can't be a or b leaving us with answer choice D

Answer:

Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.

Answer:

1st law: Law of segregation

Explanation:

Mendel’s First Law: Law of Segregation During each round of meiosis, chromosomes are separated into daughter cells. This means that one half of the genetic material goes to one gamete and the other half goes to the other. Mendel’s first law essentially states that the alleles in one locus segregate into separate gametes.

Answer:

The primary function of a vacuole is that it can store water and food.

Explanation:

Answer:

A vacuole is a membrane bound cell organelle

the function of vacuoles is to maintain water balance and for storage of something

the size of vacuoles in plant cell is very big it takes more than half of the cell but in animals very small

hope it helps

Answer:

For example, when a pot of water is placed on the stove to boil, conduction heat warms up the pot, which then heats the water molecules inside. As these molecules heat, convection causes them to move away from the interior of the pot as they are replaced by cooler molecules.

Answer:

In the light-dependent reactions, energy from sunlight is absorbed by chlorophyll and that energy is converted into stored chemical energy. In the light-independent reactions, the chemical energy harvested during the light-dependent reactions drives the assembly of sugar molecules from carbon dioxide.

Answer:

It could be carbohydrates, or just food in general

Answer: yeah that’s what i mean i lol oh gosh gosh i yeah yeah oh yeah that’s why i didn’t want me to do that it lol oh yeah that’s what i said oh gosh gosh i yeah yeah oh gosh

Answer:

0%

Explanation

all offspring will be hererozygous (Tt) it order for one of the offspring to have a long tail it would have to be (tt) and TT x tt cant make that

Answer: D is the answer

Explanation:

Answer:

Phototropism

Explanation:

Phototropism is the term that describes the growth of a plant toward any light source.

Answer:

Both cells are plant cells.

Explanation:

parental genotype I^o I^a × I^o I^b

Answer: its d i just took the test

Explanation:

Ecological succession usually includes change EXCEPT for the option" A" which is the number of different kinds of plants.

Ecological succession is the process that describes how the structure of a biological community (that is, an interacting group of various species in a desert, forest, grassland, marine environment, and so on) changes over time.

Thus, according to ecological succession, the number of different kinds of plants.

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the crop will be a commonly planted which can reduce the production of other healty plants and creating fuel out of the crops is bad for us and our environment

Answer: The answer is decreasing soil fertility

Answer:

Organic matter : biofuels

Explanation:

Biomass is derived from Organic matter in the soil and is used to produce Biofuels. Hope this helps

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An ectotherm is most likely to maintain homeostasis during hot weather by burrowing underground. Thus, the correct option is A.

Homeostasis may be defined as the process that involves a condition of balance among all the body systems required for the body to survive and operate correctly.

Ectotherms are those organisms that can not be able to maintain their internal body temperature with respect to the external one.

They follow different strategies like hibernation during winters and aestivation during summers.

During hot weather, they usually undergo summer sleep by burrowing underground.

Therefore, the correct option for this question is A.

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Biodiversity decreases with increased soil erosion.

Soil erosion is the process by which soil is moved or displaced by the action of wind, water, or other environmental factors. This can occur naturally or can be caused by human activities, such as deforestation, agriculture, construction, or mining. Soil erosion can have negative impacts on the environment, as it can lead to the loss of topsoil, which is the most fertile layer of soil and contains many of the nutrients needed for plant growth. This can reduce the productivity of land and affect agricultural yields. Soil erosion can also lead to water pollution, as soil particles can be carried by runoff into streams, rivers, and lakes, which can harm aquatic ecosystems and reduce water quality. In addition, soil erosion can have negative impacts on infrastructure, such as roads, buildings, and bridges, as it can cause the soil to become unstable and lead to landslides, mudslides, and other types of erosion-related damage. Therefore, soil erosion is an important environmental issue that requires careful management and conservation practices.

B. Biodiversity. Soil erosion can have a negative impact on biodiversity, as it can destroy or alter habitats, reduce the availability of nutrients and water, and create barriers to plant and animal migration. Soil erosion can also lead to the loss of topsoil, which is the most fertile layer of soil and contains many of the nutrients needed for plant growth. This can have a cascading effect on the food chain, as it can reduce the availability of food for herbivores, and in turn, reduce the number of predators that rely on these herbivores for food.

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Answer:

Upon exposure to insecticides, insects that do not carry the resistance genes die, thus allowing the individuals with the resistance genes to survive and reproduce, creating more resistant insects. With every generation the number of resistant insects increase.

Explanation:

The trait that would make an individual ( pest ) survive in a pest population that feeds on pest-resistant plants is :  Possession of Pesticide resistant genes

In a pest infected population most pests can be eliminated with the use of pesticides. therefore when pesticides are administered in the population, the pests that posses genes resistant to pesticides will survive and continue their reproduction cycle.  while pests without pesticide resistant genes will be eliminated.

Hence the trait that a pest( individual ) should posses to survive in a pest population is; the Possession of Pesticide resistant genes .

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Answer:

Ok, here it is! Brainliest maybe? <3

Explanation:

Answer:

A kilocalorie is equal to 1000 Calories.

Explanation:

This is because 1000 calories make kilocalorie and it is the unit of energy in nutrition. It is the energy needed to raise temperature of 1 litre water to one centrigade or Celsius at sea level or is the amount of energy needed to cause increase of one degree Celsius of water.