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Ad libitum [116K]
3 years ago
13

Chickens can have different types of feathers. Frizzled feathers curl toward a chicken’s head. Assume that feather type is deter

mined by a single gene and that the allele for frizzled feathers is dominant over the allele for straight feathers. In a cross between two chickens with straight feathers, what percentage of the offspring can be expected to have frizzled feathers? *
A: 0%
B: 25%
C: 50%
D: 100%
Biology
2 answers:
SVETLANKA909090 [29]3 years ago
7 0

Answer:

A: 0%

Explanation:

Serggg [28]3 years ago
4 0

Answer:

a 0./.

Explanation:

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Red tide occurs in patches of water where certain species of dinoflagellates flourish.

Explanation:  

Red tides refer to the noticeable microalgae proliferation that can be recognized for being a big spot in the sea of a characteristic coloration. This phenomenon is caused by two microalgae groups: diatoms and dinoflagellates, both part of phytoplankton.

Red tides occur when certain environmental factors -such as temperature, light, nutrients availability, ph, etcetera- favor the overproduction of these organisms. These species produce toxins that turn to be dangerous for other animal species that feed on them.

Because these microorganisms produce pigments, their accumulation on the sea surface can be noticed as reddish, brown, or greenish color spots of variable extension.

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E. coli belongs to the genus Escherichia

Taxonomically, <em>Escherichia coli </em>is categorized as belonging to the phylum Proteobacteria, class Gammaproteobacteria, family Enterobacteriaceae, order Enterobacteriales, and genus Escherichia (named after its discoverer, Theodor Escherich).

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  • A  Shiga toxin-producing E. coli (STEC) is capable of causing severe foodborne illness.
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1 year ago
Why is it necessary to have a constant input of energy into an ecosystem?
IrinaK [193]
If there was not a constant Input of energy into the ecosystem then nothing would have the power to do anything and nothing would be alive. the energy starts with the sun, then goes to plants, then animals that eat the plants, and then the animals that eat those animals, Ect. if this chain reaction did not happen then the plants wouldn't have to power to go through photosynthesis and then we would get no energy. the amount of energy lessen with every chain that it goes through, this is why we get more energy eating plants and why they are healthier.
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3 years ago
Explain why a natural ecosystem is both an open system and a closed system.
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Answer:An open system exchanges matter and energy with its surroundings (for example, an ecosystem). ... Strictly, closed systems do not occur naturally on Earth, but all the global cycles of matter, for example,the water and nitrogen cycles, approximate to closed systems.Sep 18, 2020

Explanation:

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3 years ago
Fill in the blank. Antibiotics can be highly effective in treating bacterial infections, as long as the bacteria have not develo
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Answer:

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