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SVEN [57.7K]
3 years ago
10

Write the procedure to observe human cheek cell​

Biology
1 answer:
scoundrel [369]3 years ago
4 0

Answer:

To observe the cheek cell,

  • Take a tooth pick use its blunt side to scrap inside the mouth.
  • You will see some deposition on the blunt side of tooth pick, make a smear on the clean slide in the center using that tooth pick.
  • Add a drop of methylene blue solution and place a coverslip, make sure that bubbles are avoided i.e. coverslip should be placed in the inclined manner.  
  • Remove the excess solution and observe it under the microscope first under 4X and then under 10X.

Observation:  

  • The cells observed are squamous epithelial cells. The small blue dots seen inside will be the bacteria from our teeth and mouth.
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"In the snake experiment, what was the basis for the hypothesis that mimic species benefit from looking" like unrelated harmful
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Answer:

The contrast in coloration was pivotal to determine if predators attack snakes based on their colors.

It was for studying MIMICRY in snakes.

Assuming all the.snakes were the same the number of attacks will not indicate anything about the effect of the colored rings.

This question on the need for provision of a controlled experiment during experimental investigation. Thus in order to test the effect of a particular condition,another contrasting condition must be provided to determine if the condition under investigation is the actual results obtaned or the influence of other factors in the environment or in the experiment.

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since it changes in the artificial snake

Explanation:

6 0
3 years ago
20. Geneticists creating the "glow in the dark" or fluorescent rabbit, inserted the GFP gene
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The correct answer is C) the fluorescent cells can help track the movement of cells.

Explanation:

In the last years, geneticists and scientists created animals that glow in the dark by inserting a Green Fluorescent Protein or GFP gene found in some species of jellyfish. This protein was used in animals such as rabbits, rats, and even chickens. One of the key reasons for this is that by inserting fluorescence scientists can better observe the development and movement of cells. This includes analyzing cells reproduction and growing in embryos of "glowing" animals or inserting the protein in specific cells or organs in an organism to observe how these change or move. Thus, the purpose of studying fluorescent rabbits is that "the fluorescent cells can help track the movement of cells".

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3 years ago
What do the variables in the Hardy-Weinberg equation represent? p p2 q q2 2pq frequency of the homozygous recessive genotype arr
kompoz [17]

Explanation:

In Hardy-Weinberg equilibrium...

p^{2} + 2pq +q^{2} = 1

p represents the dominant allele frequency

q represents the frequency of the recessive allele

q^2 = the genotypic frequency of the homozygous recessive

p^2= the genotypic frequency of the homozygous dominant

2pq= the frequency of the heterozygous genotype

Further Explanation:

Sequences of DNA make up genes which can have different forms called alleles. DNA, which makes up the genotype, is transcribed into mRNA and later translated into amino acids which are linked together by rRNA to form proteins which make up the phenotype of an organism. Mutations in DNA sequences form new alleles, and affect the corresponding mRNA and thus the protein encoded. Along with genetic drift, selective mating and natural selection, evolution may occur within populations.

Some alleles become fixed within a population over time. In Hardy-Weinberg equilibrium for a specific gene that is not undergoing evolution- allelic frequencies are stable over several generations. During this period, mutations do not occur within the population.

Learn more about mutations at brainly.com/question/4602376

Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316

#LearnWithBrainly  

 

7 0
3 years ago
Read 2 more answers
The Neanderthal skeleton known as the "old man" showed evidence of many injuries over a long life. Several broken bones had heal
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Answer:

It has been suggested that these kinds of lesions may be indicative of  fighting with other members of its species or the attacks of predators

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Which important safety precautions should be taken during a tornado?
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