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Evgen [1.6K]
3 years ago
9

PLEASE HELP PLEASE!!!! DOES ANYONE SOMEONE NAMED HIROJABAMI!?!?!? PLEASE HELP!!!!.....

Biology
1 answer:
Svetach [21]3 years ago
4 0

Answer:

well I dnt know

btw thanks for ur points I really needed that.

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During drought years, seeds with thin coats are more likely to desiccate (dry out) and not be able to germinate
Morgarella [4.7K]

Directional selection favors one of the extreme phenotypes. Option B). Fewer plants with thin seed coats will be able to germinate, leading to a higher proportion of plants that produce seeds with thick seed coats.

<h3>What is directional selection?</h3>

Directional selection increases in 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 the environmental pressure is drought during several years.

Drought periods decreases the fitness of plants that produce thin seed coats because they dehydrate before germinating.

Originally the population expressed both types of seeds. But after the drought pressure, only plants that produce seeds with thicker coats got to survive and reproduce.

The correct option is B). Fewer plants with thin seed coats will be able to germinate, leading to a higher proportion of plants that produce seeds with thick seed coats.

You can learn more acout directional selection at

brainly.com/question/12226774

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2 years ago
A trait that makes an individual different from other members of it species is called
Stels [109]

Answer: An inherited trait that makes an individual different from other members of its species is called a variation.

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3 years ago
Bacteria that may form endospores include A. E. coli.B. Pseudomonas and Micrococcus.C. Clostridium and Bacillus.D. Enterococcus
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C. <em>Clostridium</em> and <em>Bacillus</em>.

Explanation:

<em>Bacillus </em>and <em>Clostridium</em> are the gram-positive bacteria and form endospores. Endospores are the resistant dormant structures formed by some gram-positive bacteria.

These bacteria form the endospores within their vegetative cells. The endospores are highly resistant to environmental stress conditions and make these bacterial genera the dangerous pathogens.

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Why is carbon present in so many kinds of molecules
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Because the carbon atom is just the right, small size to fit in comfortably as parts of very large molecules.

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Carbon atom can form four chemical bonds to other atoms.

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