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4vir4ik [10]
3 years ago
7

suppose there are 500 units of energy available at the producer level of the energy pyramid. approximately how many units of ene

rgy are available to the first level consumer
Biology
2 answers:
earnstyle [38]3 years ago
8 0

Answer:

50 units of energy

Explanation:

For an energy pyramid with is a given ecosystem, the amount of energy transferred to to each trophic level is just the ten percent of energy contained with in an organism at the predecessor level.

Here in this case,

Energy at producer level = 500 units

After the producer comes the first level of consumer. Hence, the energy transferred from producer to its next level is

10% of 500units of energy

= \frac{10}{100} * 500\\= 50 units of energy

BlackZzzverrR [31]3 years ago
4 0
The first level consumer would get 50 units of energy

at each level of consumers it goes down by 10%
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Answer:

a) 25%; b) 50%; c) 45%; d) 38%

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<h3 /><h3>a) Unlinked genes</h3>

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The homozygous recessive individual only produces <em>ab</em><em> </em>gametes.

The F1 produces four types of gametes (each of them with a frequency of 1/4):  <em>AB</em>, <em>Ab</em>, <em>aB </em>and <em>ab</em>.

25% of the progeny will be a/a b/b.

<h3>b) Completely linked genes</h3>

AB/AB X ab/ab

F1: AB/ab

Testcross AB/ab X ab/ab

The F1 produces only two types of gametes, the parentals (each of them with a frequency of 1/2):  <em>AB</em> and <em>ab</em>.

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<h3>c) 10 m.u. apart</h3>

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The F1 produces four types of gametes, the parentals <em>AB</em> and <em>ab </em>and the recombinants <em>Ab</em> and <em>aB</em>.

Since the genes are 10mu apart, 10% of the produced gametes will be recombinant and 90% will be parentals. Since there are two types of parental gametes, each of them has a frequency of 45%.

45% of the progeny will be ab/ab.

<h3>d) 24 m.u. apart</h3>

This is very similar to c).

Since the genes are 24mu apart, 24% of the produced gametes will be recombinant and 76% will be parentals. Since there are two types of parental gametes, each of them has a frequency of 38%.

38% of the progeny will be ab/ab.

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