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3 years ago

Which statement BEST describes why mycelium, constructed of hyphae, are necessary for fungi survival?

Biology

1 answer:

mariarad [96]3 years ago

5 0

Answer:

Hyphae absorb nutrients from the environment and transport them to other parts of the thallus.

Explanation:

The large volumes of hyphae within the mycelium perform a fundamental role by obtaining nutrients from the organic substrates from the surrounding of the fungus. Hyphae play different kinds of functions in fungi.

They contain cytoplasm or cell sap. They also contain the nuclei, which include genetic material. Hyphae absorb nutrients from the environment and transport them to other parts of the thallus.

The thallus is the fungus body in which the fungi live or from beneath the soil to give support to the fungi for its growth and its survival.

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3 years ago

Ellis-van Creveld syndrome is a rare homozygous recessive disorder that affects bone growth. Individuals with this disorder are

Anna11 [10]

Answer:

1. 2.8%

2. 97.1%

Explanation:

If the birth rate of this disorder is 1 in every 5000 births it means that the frequency of the recessive homozygous genotype is 1/5000=0.0002

If we name the gene for the disorder with A, than the genotypes are aa (homozugous recessive), Aa (heterozygous, carrier), AA (dominant homozygous).

According to the Hardy-Weinberg equation:

frequency of AA is p2 (P)

frequency of Aa is 2pq

frequency of aa is q2 (Q) and

p2+2pq+q2=1 (P+Q=1)

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q= $\sqrt$ 0.0002=0.014

p= $\sqrt$ 0.9998=0.999

2pq=0.028=2.8%

2. According to the Hardy-Weinberg equation:

frequency of AA is p2 (P)

frequency of Aa is 2pq

frequency of aa is q2 (Q) and

p2+2pq+q2=1 (P+Q=1)

The frequency of the recessive homozygous genotype (Q) is 1/5000=0.0002

Q=0.0002

q2=0.0002 2pq=0.028 p2=?

p2= 1-0.0002-0.028 =0.9718=97.1%

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3 years ago

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