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marshall27 [118]
2 years ago
13

What is the total magnification for each lens setting on a microscope with 15x ocular and 4x 10x

Biology
1 answer:
Strike441 [17]2 years ago
3 0

Answer:

1) 60x; 2) 150x

Explanation:

Total magnification = Power of the Ocular X Power of the objective

Power of Ocular = 15x

Power of Objective = 4x ; 10x

1)Total magnification = 15 X 4 = 60x

2)Total magnification = 15 X 10 = 150x

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The gene for hairline shape has two alleles: widow's peak (W) and straight hairline (w). What is the percent probability that on
Alexandra [31]

Answer:

Probability of having a child with genotype Ww is 50%.

Explanation:

This question involves a single gene coding for hairline shape in humans. The allele for widow's peak hairline (W) is dominant over the allele for straight hairline (w). This means that allele W will mask the phenotypic expression of allele w in a heterozygous state.

In a cross between a mother with genotype, Ww and father with genotype, ww, the following gametes will be produced by each parent:

Mother (Ww)- W and w

Father (ww)- w and w

Using these gametes in a punnet square (see attached image), four possible offsprings will be produced with genotypes: Ww, Ww, ww and ww.

Ww(2) : ww(2) or Ww(1) : ww(1)

Hence, 1 out of 2 children produced by the parents will have a genotype Ww, i.e. 1/2. Therefore, the percentage probability is 1/2 × 100= 50%.

5 0
3 years ago
Compose an essay describing the biome/ecosystem. Include the following information:
EleoNora [17]

Answer:

The Earth’s biomes are categorized into two major groups: terrestrial and aquatic. Terrestrial biomes are based on land, while aquatic biomes include both ocean and freshwater biomes.Terrestrial ecosystems are known for their diversity; they are grouped into large categories called biomes. Grouping these ecosystems into just a few biome categories obscures the great diversity of the individual ecosystems within them. For example, there is great variation in desert vegetation: the saguaro cacti and other plant life in the Sonoran Desert, in the United States, are relatively abundant compared to the desolate rocky desert of Boa Vista, an island off the coast of Western Africa

3 0
3 years ago
Why are the desert plants on the west side of the greenhouse?
Mashcka [7]

Sun rises in the East and sets in the West. The west side gets the most sun. It also gets the least moisture because the tropical easterly winds become dry by the time they reach the west. It brings no rainfall.

3 0
3 years ago
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Why doesn't a skin cell make crystallin protein? Select all that apply. Select all that apply. Skin cells use different dna for
Phantasy [73]

Answer;

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Explanation;

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-The main function of crystallins at least in the lens of the eye is probably to increase the refractive index while not obstructing light. The skin cell does not make crystallin protein because the skin cells do not need crystallin for their function and also they have the crystallin gene but do not express it.

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3 years ago
Why do some organisms use both types of reproduction
Anna007 [38]
You're talking about sexual reproduction and asexual reproduction, right?
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