Why did the f1 offspring of mendel's classic pea plant crosses always look like one of the two parental varieties?

1 answer:

5 0

The F1 offspring of Mendel's classic pea plant crosses always looked like one of the two parental varieties because he crossed a homozygous dominant plant with a homozygous recessive plant so each plant received one recessive allele and one dominant allele. All of the plants looked like one plant because the dominant allele overshadowed the recessive allele

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Damage to sensory receptor cells would most likely result in ________. I. confusion of visual and auditory input II. inaccurate

MatroZZZ [7]

Answer:

The correct answer is: None of the above. The accurate answer is: Problem or inability in detecting the sensory information.

Explanation:

Sensory receptor cells form the part of the sensory epithelial layer that are present in the form of a lining in all sensory organs.
These sensory cells possess some specialised receptor molecules, usually on the surface of the cells, that can sense different types of sensory signals like light, in case of eyes, smell is case of nose, taste in case of tongue and sound in case of ears.
Any damage caused to these cells will adversely affect their capability to perceive or receive or detect the sensory signals.
Option I is incorrect because sensory cells are not only present in the eyes and ears but also in nose, tongue, skin. The activity of the sensory cells of one organ is independent of the activity of sensory cells of other organs hence, damage to the sensory cells of one organ will not create any confusion in different sensory inputs.
Option II is incorrect because integration of all the sensory impulses occur in the brain after the impulse has been received and detected by multiple sensory receptor cells and send to the brain through the sensory neurons.

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3 years ago

Medications such as _______ weaken the immune system by damaging immune cells.

yKpoI14uk [10]

Antibiotics have a tendency to weaken the immune system.

6 0

3 years ago

5. Which of the following is an example of active transport?

Nadusha1986 [10]

Answer:

D (proteins moving ions from low to high concentration across a cell membrane)

Explanation:

Active transport, by definition, is a type of substance transport that requires energy (typically in the form of ATP). Having said that, we can immediately eliminate B (aka water diffusion throughout the cytoplasm of a cell), as diffusion (osmosis in this case) does not require any expenditure/spending of energy. Next, we can cancel A and C because although they do require energy, there is no transport involved. Thus that leaves us with D. D is not only the answer because of the process of elimination but also b/c the ans. choice says that ions are being moved from low to high concentration, which is against the concentration gradient and thus requires energy. Hope you found this helpful! :)