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antiseptic1488 [7]
3 years ago
12

To test for protein, you added Biuret solution and

Biology
2 answers:
BartSMP [9]3 years ago
8 0

Answer:

The water should not be pink/purple because water should test negative for protein.

The water should actually have turned blue, because Biuret solution is blue.

Someone may have mislabeled the test tube with water.

The water may have been contaminated with a protein.

Explanation:

OLEGan [10]3 years ago
7 0

Answer:

Water sample showing pink/purple color is an error.

Explanation:

Biuret is a blue color reagent that changes its color to pink/purple whenever it detects protein in a sample. Water don't contain proteins so it should not show pink/purple color instead it should maintain the blue color. Food items generally contain proteins so it show pink/purple color but it showed blue color.

Error might have caused by wrong marking of the samples, test tube marked with Water might contain a mystery food while Mystery food tube might contain water.

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let A and a represent dominant and recessive alleles whos respective frequencies are p and q in a given interbreeding population
lesantik [10]

Answer:

A) 48 %

B) 18 %

Explanation:

A) Given

Frequency of individuals in the population having recessive phenotypes = 16%

Frequency of individuals in the population having recessive phenotypes is represented by q^2

q^ 2 = 0.16\\q= \sqrt{0.16}\\ q = 0.4

Thus frequency of recessive genes is equal to 40%

frequency of dominant genes is equal to

p = 1-q\\= 1-0.4\\= 0.6

Now,

p^2 + q^2+2pq = 1\\2pq = 1-0.16-0.36\\2pq = 0.48

48 % of genes exist in the heterozygous condition

B.

Frequency of individuals in the population having recessive phenotypes = 1%

Frequency of individuals in the population having recessive phenotypes is represented by q^2

q^ 2 = 0.01\\q= \sqrt{0.01}\\ q = 0.1

Thus frequency of recessive genes is equal to 10%

frequency of dominant genes is equal to

p = 1-q\\= 1-0.1\\= 0.9

Now,

p^2 + q^2+2pq = 1\\2pq = 1-0.01-0.81\\2pq = 0.18

18 % of genes exist in the heterozygous condition

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Some _____ fungi can be eaten, but there are also some that are harmful to plant life, like wheat rust. club sac zygote-forming
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