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iris [78.8K]
3 years ago
13

Give examples of minerals that exhibit each of the six main crystal systems?

Biology
1 answer:
Anon25 [30]3 years ago
7 0
Pyrite, Wulfenite, Pyromorphite, Topaz, Gypsum, and Feldspar.
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The tomato had a higher density than the water. The apple had a lower density than the water.
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What does biodiversity describe?
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a)the number of species on Earth  or b)the number of individual organisms on Earth

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3 years ago
What are the genotypic and phenotypic distributions for the F1 and F2 generations from a cross between a chick with black (BB) f
lord [1]

Answer:

Please find the punnet square to this question as an attachment

F1 generation:

genotype = BW

Phenotype = Erminette offsprings

F2 generation:

genotype = BB (1): BW(2): WW(1)

Phenotype = 1 Black, 2 Erminette, 1White

Explanation:

This question involves a gene coding for feather color in chickens. The allele for black feathers (B) is codominant with the allele for white feathers (W) to form an erminette chicken (black and white speckles).

According to this question, a cross between a chick with black (BB) feathers and chicken with white (WW) feathers will result in an all erminette chicken (BW) in the F1 generation (see attached image)

Also, in the F2 generation got by self-crossing the Erminette genotype in the F1 generation (BW), the following genotypic and phenotypic ratios are observed:

Genotypic ratio = BB (1): BW(2): WW(1)

Phenotypic ratio = 1 Black, 2 Erminette, 1White

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3 years ago
What terms or expression helps to distinguish positive from negative feedback?
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Explanation:

positovo siempreeeeee

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Help please due in twenty minutes. Will mark branliest
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Answer:

This is my answer spot

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I had something else on here. I don't know how to take off my own posts. Answer will be updated when I have the answer.

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