A) ¿Qué son las enzimas y por qué se las denomina catalizadores biológicos?

Why have plants evolved ways to prevent self-fertilization? Why do you cross-fertilization (plant to plant) more beneficial to t

aliya0001 [1]

It might be because making it a hybrid could help get nutrition and other things it needs. I don't know exactly though

8 0

3 years ago

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.

Population size between the 1st and 2nd years

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.

Population size between the years 2, 3 and 4

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.

Population size the fourth year

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.

Population size after the fourth year

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.

1) During what year did the foxes most likely arrive?

During the fourth year

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

Foxes had a negative impact on the foxes' carrying capacity. It decreased from k = 200 to k = 100 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

I WILL GIVE BRAINLIEST!!!

Nesterboy [21]

Answer:

25%

Explanation:

When looking at a pedigree remember that:

squares are males
circles are females
the solid colored figure represents an individual affected by a disease
the empty figure represents a healthy individual

Let us assign the symbol X⁺ to represent the dominant allele linked to the X-chromosome and expressing healthiness, and X⁻ to represent the recessive allele expressing the dissease.

According to this pedigree

I1 is a man affected by the disease, YX⁻
I2 is a healthy woman X⁺X⁻
we can see that among the progeny (generation II) there are two individuals affected (a boy and a girl) and one healthy girl. This means that the mother I2 is heterozygous for the trait.

So, having their genotypes we can know what are the probabilities of getting a son with DMD

Parentals) YX⁻ x X⁺X⁻

Gametes) Y X⁻ X⁺ X⁻

Punnett square)

X⁺ X⁻

X⁻ X⁺X⁻ X⁻X⁻

Y X⁺Y X⁻Y

F1)

The probabilities of getting a healthy daughter X⁺X⁻ are 25%
The probabilities of getting a healthy son X⁺Y are 25%
The probabilities of getting a daughter with DMD X⁻X⁻ are 25%
The probabilities of getting a son with DMD X⁻Y are 25%

7 0

3 years ago

Read 2 more answers

Can someone summarize The dual visual system to me AND color vision, like blindness etc...

Oduvanchick [21]

Dual visual system:

Dual visual system is nothing but the different visual systems that our brain is meant to direct.

The two visual systems are

Dorsal Stream
Ventral Stream

Dorsal Stream:

Dorsal stream is mainly referred as a vision of action. This visual system is involved in moment by moment analysis. It is also known as where stream.

Ventral Stream:

Ventral stream is mainly referred to as the vision of perception. This visual system is meant to analyse and recognize shape and object etc. It is also known as What stream

Blindness:

Blindness is a defined as the lack of vision. Such type of vision loss can't be corrected either by contact lens or through glasses.

There are two type of blindness,

Temporary Blindness
Permanent Blindness

Temporary blindness is a condition where the vision of an individual vision is limited.

Permanent Blindness is a condition where an individual can't see anything even the light

8 0

3 years ago

Is it true that all cells have the same genes, but different genes are active in different cells?

Sav [38]

Answer:

Is it true that all cells have the same genes, but different genes are active in different cells.

No, all cells are made up of a gene which is inherited from the parents cell. The gene is located in the DNA which is found in the nucleus of every living cell

Explanation:

7 0

3 years ago