Which of these statements are likely to be found in a psa? select the two correct answers?

Answer:

A. Individual #8 must be heterozygous for the trait.

Explanation:

Since the given trait is autosomal recessive, two normal but carrier (heterozygous dominant) parents can have the affected progeny. Individual 8 and individual 9 have affected son and daughter. Hence, both of them should be heterozygous dominant and carry one recessive allele to transmit to the affected progeny.

Individual 10 is affected with autosomal recessive trait and hence is homozygous recessive. Since individual 13 has two heterozygous recessive parents, it may or may not be homozygous for the dominant trait. Individual 3 have affected progeny and hence should be heterozygous dominant for the trait.

The inheritance of a recessive trait in a pedigree chart can reveal whether individuals are homoygouzs or heterozygous for the trait. An individual that does not express the trait but has offspring that do must be heterozygous. They carry one recessive allele, which is passed on to their offspring.

Without the specific pedigree chart, it is hard to definitively answer this question. However, some general principles can be applied in relation to your question. In a pedigree that tracks the inheritance of a recessive trait, individuals that express the trait are homozygous for the recessive trait. Individuals that do not express the trait could be either homozygous dominant or heterozygous, possessing one dominant and one recessive allele.

Individuals that do not express the trait, but whose offspring do, must be heterozygous for the trait. This is because they must carry one recessive allele in order to pass it to their offspring who express the trait. For instance, if their genotype was homozygous dominant, they could not pass on the recessive trait. Only a genotype of heterozygous, consisting a dominant and a recessive allele, could pass on a recessive trait.

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Final answer:

Photosynthesis and cellular respiration are two processes that work together to recycle elements in living organisms. In photosynthesis, carbon dioxide and water are used to produce glucose and oxygen. In cellular respiration, oxygen and glucose are used to produce carbon dioxide and water.

Explanation:

Photosynthesis and cellular respiration are two processes that work together to recycle elements in living organisms. In photosynthesis, carbon dioxide and water are used to produce glucose and oxygen. In cellular respiration, oxygen and glucose are used to produce carbon dioxide and water. The oxygen produced during photosynthesis is used in cellular respiration, while the carbon dioxide produced during cellular respiration is used in photosynthesis.

The correct answer is nervous system.

The system that controls the coordination movements of animals is known as the nervous system.

Information from the receptor passes along the neurons in the form of electrical impulses to the co-ordinator such as the central nervous system.

Stimulus → receptor → coordinator → effector → response

The CNS consists of brain and spinal cord. The muscle contraction and the gland secreting hormone are considered as the responses of the effector.

Solar power is the one way that a person can help to reduce the level of carbon dioxide in the atmosphere.

Solar power is the use of the solar energy either directly in the form of thermal energy that is heat or through the use of photovoltaic cells in the solar panels and transparent photovoltaic glass to generate electricity.

Solar power is found to work by the conversion of energy from the Sun into power. There are two main forms of energy which are generated from the Sun for our use which include electricity and heat. Both of these forms are generated through the use of solar panels, which range in the size from residential rooftops to solar farms which stretching over acres of rural land areas.

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Collagen is transported across a cell membrane via vesicular transport.

Extracellular proteins are those that carry out their functions in the cell's surrounding matrix outside of the cell.

Since they are created inside the cell yet secreted outside to perform their function, they are known as secretory proteins. They play a part in cell communication, immunology, and homeostasis.

The strength and structural integrity of tissues are largely due to collagen. The most prevalent protein in the body is collagen.

Therefore, Collagen is transported across a cell membrane via vesicular transport.

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DNA needs to replicate before cells divide so that each daughter cell will have the same and equal number of chromosomes.

DNA REPLICATION:

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Mendel’s F1 generation plants were dominant .

Mendel found that crosses between parents that differed for one trait produced F1 offspring that all expressed one parent's traits. The traits that were visible in the F1 generation are referred to as dominant, and traits that disappear in the F1 generation are described as recessive.

The F1 generation helps scientists determine which alleles are going to be recessive and which will be dominant in further crosses.

F1 generation is the first filial generation, whereas F2 generation is the second filial generation obtained by crossing the F1 generation.

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BamHI is a type II restriction endonuclease, ensuring the dimensions for recognizing short arrangements of DNA and cutting them at a target site. It transmits various type II endonuclease, replicating DNA, and possibly handling DNA mutation-derived infections through genetic therapy. 

In the case of castrated or neutered male rats, the medial preoptic area has as much dopamine as normal rats, but the presence of a receptive female does not evoke much release of dopamine. Dopamine helps male sexual behavior in many species and is released just before and/or during copulation in three neural systems. 

In castrated male rats, the medial preoptic area is essential for initiating sexual behavior, but not for sexual motivation. Damage to this area diminishes the rat's willingness to initiate sex, despite an unchanged motivation to seek sexual partners. This highlights distinct neural mechanisms for sexual behavior execution and motivation.

In castrated male rats, the medial preoptic area plays a key role in sexual behavior. This area, located in the anterior hypothalamus, is critical for initiating sex in males. If this area is damaged or lesioned, male rats exhibit a decrease in their inclination to initiate sex, even if they still seek out a sexual partner. However, the motivation to seek out a sexual partner does not seem to be diminished, suggesting that sexual motivation and the execution of sexual behavior are regulated by distinct neural mechanisms.

For comparison, in females, the ventromedial hypothalamus determines sexual receptivity, while the preoptic area is more involved with eating behaviors. The preoptic area in males corresponds to aggression-related areas, whereas in females, it overlaps with areas associated with nurturance.

Overall, the medial preoptic area is crucial for male sexual activity, while the ventromedial hypothalamus is key for female sexual behavior. This illustrates the gender differences in brain regions responsible for sexual behavior and motivation.

Answer: a constant stream of charged particles flowing away form the sun

Explanation:

The electron transport chain involves both passive and active processes. Passive processes include the movement of electrons and protons along the chain, while active processes include the transport of protons and the transfer of electrons to the electron acceptor.

The electron transport chain (ETC) involves both passive and active processes. Passive processes include the movement of electrons along the chain from higher to lower energy states, as well as the flow of protons (H+) down their concentration gradient, back into the matrix, through ATP synthase. Active processes include the active transport of protons (H+) across the membrane to create a proton gradient, as well as the active transfer of electrons from reduced electron carriers (NADH, FADH2) to the electron acceptor (O2) at the end of the chain.

Answer:

The correct answer is D) Both surfaces of the membrane can interact with water and other molecules.                                                                                                                                                                

Explanation:

Phospholipids provide barriers in cellular membranes to protect the cell, and they make barriers for the organelles within those cells.

Phospholipids work to provide pathways for various substances across membranes. Membrane proteins stud the phospholipid bilayer; these respond to cell signals or act as enzymes or transporting mechanisms for the cell membrane.

The phospholipid bilayer readily allows essential molecules such as water, oxygen and carbon dioxide to cross the membrane, but very large molecules cannot enter the cell in this way or may not be able to at all.

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Answer:

D) Both surfaces of the membrane can interact with water and other molecules.                                                                                                                                    

Explanation:

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