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liberstina [14]
3 years ago
9

A pregnant mouse is exposed to high levels of a chemical. Many of the mice in her litter are deformed, but when they are interbr

ed with each other, all their offspring are normal. Which two of following statements could explain these results?a. In the deformed mice, somatic cells but not germ cells were mutatedb. The original mouse's germ cells were mutatedc. In the deformed mice, germ cells but not somatic cells were mutatedd. The toxic chemical could not affect development but is not mutagenic.e. None of the above
Biology
1 answer:
MissTica3 years ago
3 0

In the deformed mice, somatic cells but not germ cells were mutated. The original mouse's germ cells were mutated.

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B. A family of foxes arrived on the island after the rabbits were released. No
Juli2301 [7.4K]

The carrying capacity is affected by dense dependent and dense independent factors. 1) During the fourth year. 2) Negative impact. K decreased from 200 to 100 rabbits.  

<h3>What is carrying capacity?</h3>

Carrying capacity -K- is the capability of the environment to support a growing population.

It is a constant that coincides with the population size at which natality and mortality rates are equal. This is the equilibrium point.

Commonly, environments have limited resources, and as the population grows, resources are consumed faster, leading to an increase in the competition rate.

Per capita growth rate decreases as population size, N, increases.

  • If the N < K, the population can still grow.

• When N approximates to K, the population's growth speed decreases.

• When N = K, the population reaches equilibrium,

• When N > K, the population must decrease in size because there are not enough resources to maintain that size.

The carrying capacity might be affected by limiting factors, which might be

  • density dependent (for example, competition, predation, etcetera)
  • density independent. This last case refers to dense-independent factors, among which we can mention human impact or natural disasters (fires, volcanic eruption, flooding).

In the exposed example, when referring to rabbit's carrying capacity, we can assume it is limmited by intraspecific competition and by predation.

  • <u>Population size </u><u>between the 1st and 2nd years</u>

At first we can see that during the first two years, the number of rabbits increased until it was a little bit over 200 individuals.

  • <u>Population size </u><u>between the years 2, 3 and 4</u>

During the second, third, and fourth year, the number of rabbits was kept around 200 individuals, which leads us to assume that K = 200 rabbits.

  • <u>Population size </u><u>the fourth year</u>

However, in the fourth year, there was a sharp decrease in the number of rabbits. Probably this event was due to the arrival of foxes (predators) on the island.

  • <u>Population size</u><u> after the fourth year</u>

In the presence of foxes, the number of rabbits varied around 100 (K = 100).

According to this information, we can assume that only intraspecific competition (related to resources) had a significant role during the first years.

But with the foxes' arrival, the rabbits' carrying capacity decreased from 200 to 100, meaning that, during the following years, predation strongly influenced the rabbits' carrying capacity.  

<em>1) During what year did the foxes most likely arrive? </em>

During the fourth year

<em>2) How did the arrival of the fox family impact the carrying capacity of the rabbit population on this island? </em>

Foxes had a negative impact on the foxes' carrying capacity. It decreased<u> from k = 200 to k = 100 </u>since the foxes arrival to the island.

You can learn more about carrying capacity at

brainly.com/question/2375972

brainly.com/question/14194197

#SPJ1  

4 0
2 years ago
Domestication is the process of selecting wild organisms for their characteristics and keeping those characteristics the same ov
Elden [556K]
False. Domestication is the process of selecting wild animals and CHANGING their characteristics to suit the needs of the producer/owner or breeder.
4 0
3 years ago
Can someone please answer quick and correct I will give brainliest
sladkih [1.3K]
Your answer is B I believe good luck!
If it’s not B it’s D
7 0
3 years ago
During a knee flexion exercise, when you begin to fatigue what movement will you attempt to perform? Why?
nignag [31]

Knee flexion exercise is an exercise that involves bending the leg at the knee joint, thereby reducing the gap between the lower leg and upper leg.

The benefit of this exercise includes:

  • Helps to strengthens the muscles in the back of the thigh.
  • Helps to strengthens the muscles at the hamstrings.

The voluntary action that i may perform after experiencing fatigue from the exercise is to Stand Upright.

The action will helps my lower leg and upper leg to regain normal posture, thereby reducing the muscle tension around my knee.

Learn more about knee flexion exercise here

<em>brainly.com/question/22466488</em>

7 0
3 years ago
Fungi are important to the environment because they
telo118 [61]
B. Break down dead organisms

Fungi are decomposers. they breakdown the bodies of dead organisms. They play a very important role.
8 0
3 years ago
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