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Stels [109]
2 years ago
13

Tran is conducting an investigation about

Biology
1 answer:
AnnyKZ [126]2 years ago
6 0

Answer:

The rain in the gauge has evaporated

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A population of dogs can be either brown or black; the black allele (B) has complete dominance over the brown allele (b). Given
Marat540 [252]

Answer:

The frequency of individuals with the dominant phenotype is 0.83.

Explanation:

We are provided with:

Black allele has completed dominance over brown allele

T. no of dogs (dominant)= 2000

No. of black dogs (dominant) = 1660

From Hardy-weinberg equilibrium

Frequency of individual - (individual/ Total population)

Frequency of black dogs = 1660/2000 =

0.83

So, The frequency of individuals with the dominant phenotype is 0.83

4 0
3 years ago
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Use the diagram below to answer the question photosynthesis cellular respiration energy in energy in energy out energy out
Aleks [24]
You need to post the diagram.
6 0
2 years ago
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Comparing amino acid sequences in proteins has been used to determine the relatedness of organisms. Below is a graphic that show
Tju [1.3M]

Answer:

A) Species A and E are more closely related than either species are related to species D.

B) Between A and B = 99.1%

Between species A and C =97.5%

Between species B and C = 97.3%

Similarity in amino acids sequence reflects similarity in DNA sequence

C) Species A and E are most closely related

D) Species A and E have the most similarity in amino acid sequence, and hence DNA sequence.

Explanation:

A) The amino acid sequences of the protein, keratin, in species A and D has a difference of about 19 whereas species A and E have a difference of only 1. Therefore, it means that keratin in species A and D will have differences in structure whereas between species A and E, they would have almost the same structure.

Also, species D and E have a difference of 20 in their amino acids sequence, therefore, the structure of keratin in both species will have differences in structure.

B) Similarity between A and B:

450 - 4 = 446

In percentage: 446/450 × 100% = 99.1%

Similarity between A and C:

450 - 11 = 439

In percentage: 439/450 × 100% = 97.5%

Similarity between B and C:

450 -12 = 438

In percentage: 438/450 × 100% = 97.3%

The sequence of DNA of species determines their amino acid sequences because information in DNA is transcribed to RNA which are then used to make proteins. Therefore, if a species are very closely related, they are expected to have very similar genetic sequences and thus proteins too. This is reflected in similarity between amino acid sequences in their proteins.

C). Species A and E are most closely related.

D) Species A and E have only a single difference in their amino acids sequence for Keratin. This translates to about 99.7% similarity which is the highest among all the species compared. Therefore, species A and E are most closely related.

7 0
2 years ago
At a birthday party, a teen decides to inhale some of the helium from a nearby balloon using his mouth. Before the helium gas re
Ket [755]

Answer:

D. Oral cavity to the trachea to the larynx to the right and left main bronchi.

Explanation:

6 0
2 years ago
Dna methylation is a mechanism used by eukaryotes to do what? see concept 18.2 ( page 368) hints dna methylation is a mechanism
krok68 [10]
<span>DNA methylation is a process that can change the activity of a gene without rearranging the DNA sequence. The mechanism most often is used to inactivate genes.</span>
6 0
3 years ago
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