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USPshnik [31]
2 years ago
8

Explain the steps that you would use to focus on a specimen under a compound light microscope.

Biology
1 answer:
Rashid [163]2 years ago
8 0

To start, move the objective lens to its lowest power setting. Place a slide on the stage with the label side up and the cover slip in the middle. You can only use the coarse focus knob when the power is low. If you can't see anything, move the slide a little while you look and focus. If nothing shows up, turn down the light and move the slide a little while you're looking and focusing. Once you're in focus on low power, move the slide to make the object of interest in the middle of it. Turn the objective to medium power and only change the fine focus. If you need to, turn the objective to high power and only adjust the fine focus.

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What part of body are you focusing on with this stretch?
Vilka [71]

Answer:

arms and shoulders

Explanation:

at least with me, after I lift weights, I do this and I can feel the focus on my arms and shoulders. It hurts like a b though lol

5 0
3 years ago
Of all the water on Earth, what is the percentage of drinkable fresh water?
yaroslaw [1]

It might be 23% because 77% of water covers earth and most of the water is either polluted or salt water.

7 0
3 years ago
What trait is recessive when you have a male rabbit with black fur and a female rabbit with tan fur
ArbitrLikvidat [17]

Answer:

What trait is recessive when you have a male rabbit with black fur and a female rabbit with tan fur

None is recessive, the difference in color of the offspring shows that there is co-dominance of both traits

Explanation:

3 0
3 years ago
Assuming dragon genetics follows the same rules as fruit flies, what ratio of genotypes would you expect if the genes were not l
andrew11 [14]

Assuming dragon genetics follow the same rules as fruit flies, we would get the same possible genotype for all 16 offspring provided that the genes are not linked.

Considering dragon genetics, flame eyes (F) are dominant to blue eyes (f) and burbling (B) is dominant to whistling (b).

Now, a dihybrid cross between two homozygous blue-eyed, whistling dragons will yield 16 offspring all with the same possible genotype .i.e. homozygous blue-eyed, whistling type.

Morgan through experiments on fruit flies observed that when the two genes in a dihybrid cross were situated on the same chromosome, the proportion of parental gene combination were much higher than the non-parental type.

He attributed this due to the physical association or linkage of the two genes and coined the term 'linkage' to describe the physical association of genes on a chromosome. The term 'recombination' is to describe the generation of non-parental gene combination.

To learn more about dihybrid cross here

brainly.com/question/1185199

#SPJ4

4 0
2 years ago
What causes genetic variation to be preserved or eliminated and how does that effect evolution
AfilCa [17]

Answer:

Mutation. Mutations are changes to an organism's DNA and are an important driver of diversity in populations. Species evolve because of the accumulation of mutations that occur over time. ... Some mutations are unfavorable or harmful and are quickly eliminated from the population by natural selection.

3 0
3 years ago
Read 2 more answers
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