TRUE/FALSE. Crossing over is the genetic recombination of homologous chromosomes and results in decreased genetic variability in offspring.

This translates to symptoms such as weight gain and fatigue.

Hypothyroidism is defined as the endocrine disorder in which the thyroid hormone is deficient or under secretion of the hormone.

The thyroid hormone is used for the following purposes in the body:

When the thyroid hormone is deficient, the following is bound to occur:

Therefore a decrease in the metabolic rate of the body will lead to fatigue and gaining of weight.

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Answer:

Both require energy.

Explanation:

Because they transport substances into and out of the cell by active transport that requires energy

Answer:

There are specific things that us humans experience that are caused by nature and by nurture, but there are also things that they work together on as well. I believe that gender and gender expression is fueled by both nature and nurture. An experiment was conducted in England with toddlers and adults. The adults were to watch over the toddlers and play with them. What the adults didn't know is the toddlers were dressed as the opposite sex. A little girl dressed as a male was handed "boys toys" and a boy dressed as a female was handed "girls toys". But the scientist went even further with her research and went to a zoo. Chimpanzees are our closest relatives and were the target group for the experiment. Different gendered toys were placed about and one by one monkeys began to play with the twos. However, the male chimps played with the "boys toys" and the female with the "girls toys". So it was proven quickly that while it may seem like more nurture than nature, nature does play a role in gender expression.  

Directional selection favors one of the extreme phenotypes over the other one. Option C is correct. Natural selection is the evolutive force, and 0.40, 0.40, and 0.20 are the new genotypic frequencies.

Directional selection is one type of natural selection. Let us remember that natural selection is an evolutive force.

Directional selection increases the proportion of individuals with an extreme phenotypic trait.

There must be a selective pressure or environmental pressure acting on populations to lead the species to increase the number of individuals expressing that extreme phenotype.

This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.

In the exposed example,

- Grey beetles managed to camouflage with rocks since their gray color was similar.

- White beetles were exposed on the dark gray rocks, so they were easily seen by birds.

- Predation by birds was an environmental pressure that had a stronger influence on the white phenotype.

Natural selection favored gray-colored beetles, who could survive and reproduce.

Assuming a diallelic gene expressing complete dominance codes for beetles color, we can suggest that the frequency of one of the homozygous genotypes increased, while the other decreased to near cero. Heterozygous individuals kept the allele coding for the white phenotype.

Among the options, C is the correct one. Natural selection is the evolutive force, and 0.40, 0.40, and 0.20 are the new genotypic frequencies.

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The photophosphorylation is the synthesis of ATP from ADP and phosphate in the plants using the light energy absorbed during the photosynthesis process.

Answer:

Thus without erosion deposition is not possible, in order to get deposited the physical erosion had to take an example of landslides that are from mass wasting the process of erosion causes the rocks to deforms from the hillsides and they crumble downhill to form a slope.

The most likely scenario from the appearance of a new organism is that "A new species would have evolved."

Use a peripheral nerve graft to bridge axons above and below the injury. Axon regeneration in the mature mammalian central nervous system (CNS) is extremely limited after injury.

Consequently, functional deficits persist after spinal cord injury (SCI), traumatic brain injury, stroke, and related conditions that involve axonal disconnection. This situation differs from that in the mammalian peripheral nervous system (PNS), where long- distance axon regeneration and substantial functional recovery can occur in the adult. Both extracellular molecules and the intrinsic growth capacity of the neuron influence regenerative success. This chapter discusses determinants of axon regeneration in the PNS and CNS.After peripheral nerve injury, axons readily regenerate. The distal portion of the axon, which is disconnected from the cell body, undergoes Wallerian degeneration. This active process results in fragmentation and disintegration of the axon. Debris is removed by glial cells, predominantly macrophages. Proximal axons can then regenerate and re-innervate their targets, allowing recovery of function.

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Answer:

Several school lunch professionals recently discovered the nutrients in school lunches wereinsufficient for teenagers. After much discussion they decidedcricketsshould be added toschool lunches! Needless to say, student reaction was mixed. Some thought this would helpthem meet their nutritional requirements. Others were disgusted! “Crickets, they said? Gross!”

Explanation:

Enzyme activity can be determined (b) by measuring how much of the substrate is consumed aces and (c) by measuring how much of the product is produced O determining when the amount of substrate is equal to the amount of product.

Usually, the purpose of cultivating bugs in a plant is to increase enzyme activity. A biological catalyst is an enzyme. They decrease activation energy, just like other catalysts, enabling processes to go in the desired direction.

They are often sensitive to the temperature, pH, and salt content of the environment they function in since their action depends on the folding of a protein. There are few exceptions to this rule, such as the enzymes used in washing powder, but generally speaking, activity may be reduced (reversibly) when slight departures from their tolerance limits occur.

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Answer:

A - Ao

B - oo

C - oo

D - AB

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hope it helps you<3

The deltoid muscle is one of the recommended sites for intramuscular injection in children because it is easily accessible and has a lower risk of complications. In addition, the deltoid muscle has a smaller mass of subcutaneous fat compared to other injection sites.

The deltoid muscle is a muscle that covers the shoulder joint and is responsible for raising the arm away from the body. It is triangular in shape and consists of three parts: anterior, middle, and posterior. The deltoid muscle is one of the recommended sites for intramuscular injection in children because of the following advantages:

Therefore, the deltoid muscle is a safe and effective site for intramuscular injection in children.

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There is no risk of passing on a cancer predisposition from a somatic cell mutation.

There are category of gene mutation, Hereditary mutations: that are inherited from a determine and are gift for the duration of a person’s life, and it is nearly in each cell at the same time as the second is, somatic or received mutation: this kind happens a few instances and are found in a selected cells.

Hence, somatic mutation can't be exceeded to the subsequent generation.

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The neural crest development and craniofacial morphogenesis are coordinated by histone acetylation and nitric oxide. Let's see how these two processes regulate neural crest development and craniofacial morphogenesis.

A neural crest is a group of cells that form during embryonic development. The neural crest has the ability to differentiate into various cell types like sensory neurons, glia, melanocytes, smooth muscle, etc. The neural crest development is regulated by a combination of intrinsic genetic factors and extrinsic environmental cues, including chromatin remodeling, histone acetylation, and nitric oxide.

Histone acetylation plays a crucial role in neural crest development by modulating gene expression. Nitric oxide is an essential signaling molecule that is involved in the regulation of various cellular processes. It regulates the neural crest cell differentiation process and promotes cell survival, migration, and proliferation.

Craniofacial morphogenesis is the process of development and shaping of the skull, face, and associated structures. It is a complex process that involves the coordination of various cellular processes. It is regulated by intrinsic genetic factors as well as extrinsic environmental cues.

Histone acetylation is an essential process that controls gene expression during craniofacial morphogenesis as it promotes the differentiation of various cell types, including chondrocytes and osteoblasts. Nitric oxide regulates the differentiation of osteoblasts and chondrocytes, which are essential for craniofacial development.

Thus, it can be concluded that these two processes are essential for proper embryonic development.

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During the refractory period immediately after an action potential passes along an axon, it is not possible to generate a second action potential.

How is refractory period defined?

Immediately after an action potential passes along an axon, the membrane enters a refractory period. During this period, it is not possible to generate a second action potential. The refractory period is characterized by a temporary inactivation of the sodium channels responsible for the depolarization phase of the action potential.

This inactivation prevents the axon from immediately firing another action potential.

The refractory period is essential for the proper functioning of the nervous system as it ensures that action potentials are propagated in a unidirectional manner and allows for proper timing and coordination of neural signaling.

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Answer: C

Explanation:

A keystone species helps to  define an ecosystem. The correct answer is option C.

It is that they help to hold the systems together. It will be difficult for the certain species to adapt to the changes that environment goes through.  

Keystone species are species which has the  significant and a large influence on community structure with the characteristics.  It is often considerably  with the  lower  abundance and  the biomass in comparison to dominant species. If  removed  such species can  cause  a serious disruption in  the structure with the function of  a community.

In  marine ecosystem  or other type of  an ecosystem in that case  a keystone species defines an  organism which helps to  hold system together.  Excluding such species, ecosystems will sound very different. Some of them might  not  adapt to environmental changes and  if the keystone species disappeared.

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Four of the following are important ecological services provided by forests except that it "releases atmospheric carbon." The correct answer is Option C.

Ecological services are the benefits that humans get from the natural world. They are the things that humans depend on that would be impossible or incredibly costly to recreate on our own. Some examples of ecological services include water filtration, pollination, and waste decomposition.

Ecological services are essential to human life and economic growth. These services are incredibly valuable, and humans depend on them for survival. Without ecological services, humans would not be able to survive. Forests are a vital part of the ecological services as they provide water filtration, wildlife habitats, soil erosion control, and also influence local and regional climates.The correct option among the following is Releases atmospheric carbon.

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Answer:

a

Explanation:

my reason is that the capacity carrying is 35

Answer:

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Explanation:

The graph does not mention any seasons. The graph is not growing geometrically. For about 9 months the population has been about 35.

The exact size of the population of black tip sharks is difficult to determine due to their migratory nature and the vastness of the oceans they inhabit.

However, some estimates suggest that there may be tens of thousands of black tip sharks globally. These sharks are found in coastal waters throughout the world, particularly in the western Atlantic, Indian, and Pacific oceans. While they are not currently listed as endangered, some populations may be at risk due to overfishing and habitat destruction. As a top predator in their ecosystem, the health of the black tip shark population is important for the overall health of marine ecosystems. More research is needed to better understand and monitor the population dynamics of black tip sharks.

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Answer:

From lower to higher level of magnification, the stella's view about plant cells.

Explanation:

At lower magnification, the structure of plant cell is not clear by stella but with the increase of magnification, the cell structure becomes enlarge and clearly seen different structures of plant cell by the individual. The boundary of plant cell is known as epidermis. The upper boundary of plant cell is upper epidermis and the lower boundary of plant cell is lower epidermis.

Answer is C.

Explanation: Exercise is good for the body. It helps regu

Answer:

What are you referring to???

Answer:

I believe the answer is C. Potenial energy

Explanation:

Earths magnetosphere is not part of it and that potential energy.

Answer: Moose's fur grows darker as they grow older. While mature moose have dark, brown coats, calves have light brown fur.

Explanation:

In the original sentence, "mooses" is the plural form of "moose," but it is not a correct plural form. The correct plural form of "moose" is "moose." The possessive form of "moose" is "moose's." Therefore, the correct sentence should be "Moose's fur grows darker as they grow older. While mature moose have dark, brown coats, calves have light brown fur."

A Punnett square is a diagram that is utilized to calculate the likelihood of an offspring inheriting a specific trait from its parents. This diagram is commonly used in the study of genetics and is named after its creator, Reginald Punnett.

Punnett squares utilize alleles, which are variations of a particular gene that can produce differing traits. Alleles are usually represented as letters, with uppercase letters representing dominant alleles and lowercase letters representing recessive alleles.

The Punnett square is made up of two axes, with the father’s alleles listed along the top and the mother’s alleles listed along the side. The possible combinations of these alleles are then shown within the squares of the grid. For example, if a father has an A allele and a mother has a B allele, their offspring could inherit an AB allele, an AA allele, a BB allele, or a BA allele.

Punnett squares are used to study a variety of genetic traits, such as blood type, eye color, and height, and can provide useful information about inheritance patterns.

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Answer:

because of the following ways

Explanation:

1)because they protect plants

2)because they protect animals

3)because they are starting to use less vehicles

4)because they lessened the use of industrial vehicles