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Eva8 [605]
3 years ago
7

Why are bubbles produced by catalase positive organisms after addition of hydrogen peroxide?

Biology
1 answer:
gizmo_the_mogwai [7]3 years ago
7 0

The breakdown of hydrogen peroxide into oxygen and water is mediated by the enzyme catalase. When a small amount of an organism that produces catalase is introduced into hydrogen peroxide, rapid elaboration of bubbles of oxygen, the gaseous product of the enzyme's activity is produced.

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Explanation:

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You are interested in mapping the location of two loci in crested geckos that control different aspects of the crest phenotype.
weqwewe [10]

Answer:

a. Ed/eD

b. RF=0.12

Explanation:

The alleles for genes D/d and E/e are:

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After testcrossing a double heterozygote (DdEe x ddee) there are 4 types of offspring, two of them much more abundant than the other two. The homozygous recessive parent can only produce <em>ed</em> gametes, so the phenotypes of the offspring depend on the gametes that the double heterozygous parent produced.

The offspring was:

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Total: 177

a) This result suggests that the genes are linked. Since recombination is a rare event, the most abundant phenotypes always come from the parental gametes, and the least abundant come from the recombinant gametes.

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(0_0)

(.)   (.)

<u>No need to thank me!!!</u>

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