to maintain a line of pure-breeding peas , selective breeders would use a technique called __________.

1 answer:

5 0

To maintain a line of pure-breeding peas, selective breeders would use a technique called artificial cross-pollination. This is a technique were breeders transfer pollen from the anthers of one pea plant (male parent) to a stigma of a flower (female parent).

This technique was developed by Gregor Mendel, the founder of the science of genetics. He was a monk who dedicated his time in research about how genes of plants are carried over through specific species. In his controlled experiment he used the pea plant because they are cheap and readily available from merchants who sold them in different classifications. He also used pea plants because they have the capacity to self-pollinate or cross-pollinate.

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Noah has collected a mold specimen found on a tree in his backyard. Noah knows the mold is a decomposer, but what role does mold

svp [43]

Answer:

the correct answer is A

Explanation:

definition of a decomposer is an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.

so A is the answer

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How primates and hominids are different?

dem82 [27]

The difference between primates and hominids: a primate refers to members of the ORDER Primate which includes monkeys, lemurs and apes. A hominid is a member of the FAMILY Hominidae (great apes) which includes gorillas, chimpanzees, orangutans, and us humans. A hominid is just a specific group of primate. Meaning, since the order primate composes of monkeys, lemurs and apes, the hominid is just a certain kind of primate belonging to the "ape" category, which differentiates it from other primates who belong to the "monkey" or "lemur" subtype.

I hope this helps.

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3 years ago

1. Simple columnar and pseudostratified columnar epithelium both are considered simple epithelium that consist of column-shaped

Y_Kistochka [10]

Answer:

Both options are true.

Explanation:

The cylindrical epithelium is a simple epithelium, which is characterized by having a cell layer, where all the cells are supported on the basement membrane, and its nucleus has reverse polarization in relation to the rest of the cells of our body, that is, they are found in a not very common position.

Simple cylindrical epithelia are found in areas of absorption or assimilation and exchange of gases or nutrients, since this shape is what allows them optimal diffusion through the epithelium, an example of the tissues in which this cellular architecture is found. They are the intestinal tract and the respiratory tract.

In the case of pseudostratified epithelium, it is very similar in function to the cylindrical one, with the difference that it gives a multilayered appearance, that is, its cells are stacked one from the other, giving the appearance of more than one epithelial layer as the stratified epithelium of our epithelial organ, but nevertheless it is not like that, there are many cells of irregular shape with a support in the basal one, that is why it is a single layer.

This last epithelium is also found in the airways in large numbers.

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Witch contribution did Kepler make to viewing the solar system? A: He proposed the earth-centered model of the solar system. B:

Ira Lisetskai [31]

Answer:

<u>C: He showed that planets moved in elliptical orbits.</u>

Explanation:

Copernicus described the solar system model with Sun at its center and planets along with their moons revolving about the Sun in circular orbits. This model is known as heliocentric model and this shift from geocentric model is known as Copernican revolution. Kepler supported the heliocentric model but showed that the planets revolved in elliptical orbits with the Sun at one of its foci. He wrote laws describing the planetary motion.

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How does the mammalian body protect itself against infections

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The body defends against infection by increasing the number of certain types of white blood cells (neutrophils and monocytes), which engulf and destroy invading microorganisms. The increase can occur within several hours, largely because white blood cells are released from the bone marrow, where they are made.

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