What is the major difference between primary and secondary succession?

1 answer:

3 0

Primary succession starts with bare rock which is broken down by either lichen or moss to make soil while secondary succession starts with developed soil

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Please help!!!! very confused pt 2

Schach [20]

Answer:

If the genotype of the parents are Iᵃi and Iᵇi, then four type of offspring will be produced.The genotype of the offspring are, IᵃIᵇ, Iᵃi,Iᵇi, and ii.

Explanation:

IᵃIᵇ = As the alleles are co-dominant in nature, so both type of alleles are expressed. The blood group will be AB. So, both A and B type of antigen will be found in plasma membrane of RBC.

Iᵃi= In this type of genotype only A type of antigen will be expressed in the membrane of RBC. The blood group will be A type.

Iᵇi= In this type of genotype only B type of antigen will be expressed in the membrane of RBC. The blood group will be B type.

ii= This is a recessive type of genotype. So, no antigen will be found on the membrane of the RBC. And the blood group will be O type.

The offspring's ratio will be 1:1:1:1.

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What force is mostly responsible for tides?

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C. The gravity of the moon

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Leaves with carotenoid pigment turn during the fall.

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yellow and orange...

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PKU (Phenylketonuria) is an autosomal recessive disease, in which the synthesis of amino acid Tyrosine from Phenylalanine is blo

sveticcg [70]

The answer is; C

Use the Hardy Weinberg equiation for population in assumed equilibrium. ( p+q = 1)

If p = 0.3 then q=1-p = 1-0.3 = 0.7

People who are heterozygous for the disease are represented by 2pq = 2 * 0.3 * 0.7

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What kind of epidemic hit Europe during World War I?

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The 1918 Spanish flu, it infected 500 million people across the globe and it had killed up to 100 million people which is about 5% of the worlds population in 1918.

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