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3 years ago

Which of the following is a benefit of scientists studying seismic waves?

2 answers:

7 0

it can help us determine and predict earth quakes. and also volcanic blasts because of when a volcano blows off and if its powerful enough like most it can cause the earth or nearby area to rumble or earthquake before it happenes because of the gasses have built up so much that the ground trapping the gasses cannot handle the pressure therefore crack the earth and explode the gasses making lots more pressure causing it to errupt... i think

m_a_m_a [10]3 years ago

3 0

B. understanding the interior of Earth

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A pesticide inhibits the activity of a particular enzyme a, which can therefore be used to assay for the presence of the pestici

Anon25 [30]

In order to react to the stimulus and catalyze the reaction necessary for the desired outcome, enzyme require a process in which they bind with the substrates in the given experiment, which will then allow the enzymes to undergo the process they are attempting to implement.

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3 years ago

Attached earlobes are recessive to free earlobes. What genotypic ratio is expected when an individual with attached earlobes mat

Marianna [84]

Answer:

Explanation:

This is a monohybrid cross between involving a gene coding for earlobe. The allele for free earlobe (F) is dominant over that of attached earlobe (f).

N.B: let F represent the gene involved.

A genotypic ratio is the ratio derived from the offsprings based on the actual genetic make-up and not based on their phenotypic appearance as in phenotypic ratio.

A homozygous individual is an individual having the same kind of alleles for a gene while a heterozygous individual is one that has two different alleles i.e. combination of the dominant and recessive allele.

The monohybrid cross is between an individual with attached earlobe (ff) i.e. homozygous recessive individual. (Note that, a recessive trait will only be expressed in a homozygous state) and a heterozygous free earlobeb individual (Ff). (See attached picture). Ff × ff

The resulting four offsprings will

be expected to have only two distinct genotypes i.e heterozygous (Ff) and homozygous recessive (ff) in an equal ratio i.e. 2:2 ~ 1:1

4 0

3 years ago

In a food chain, which organism receives the least amount of energy

kati45 [8]

The answer is b) raccoon!

only 10% of energy is passed to organism from the food.
so the raccoon, which is the highest in the food chain, will have the lowest amount of energy.

hope this helps!!

6 0

3 years ago

Read 2 more answers

Explain Mendel's law of independent assortment and how the 9:3:3:1 phenotypic ratio among the F2 of a dihybrid cross provides ev

GrogVix [38]

Answer:

Explanation:

Mendel's law of independent assortment state that two different genes assort independently in gamete formation.

To reach this conclusion, one has to do a dihybrid cross. This means that two genes responsible for different traits need to be analyzed at the same time.

1) Starting with a parental generation of a cross between two pure lines (homozygous for both genes) with different traits, a plant with yellow and round seeds (YYRR) and another with green and wrinkled seeds (yyrr). The F1 will be phenotypically homogeneous (yellow and round), and genotypically heterozygous (YyRr).

2) If the individuals from the F1 are crossed with one another, we have to do a Punnett Square to determine the phenotypic ratio of the F2.

If the genes assort independently, the F1 individuals will produce their different gametes with the same probability. Each possible gamete will appear in a 1/4 proportion: YR, Yr, yR, yr.
The 9:3:3:1 ratio is a result of analyzing the possible phenotypes that result from the dihybrid cross.

See the attached image for an illustration of the crosses in each generation and the Punnett Square.

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3 years ago

How does osmosis differ from diffusion

natta225 [31]

The differences between osmosis and diffusion it that diffusion refers to the movement of any chemical from one place to another, whereas osmosis exclusively refers to the movement of water across the semipermeable membrane. (cell membrane)

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3 years ago