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3 years ago

Which situation allows evolution doing gene duplication

1 answer:

7 0

Since no situations are described in this query, evolution is the process by which animals tend to adapt and respond to selection factors which aid them to survive harsh environment. Moreover, in the process of gene duplication, mitosis could provide an example to this process or simply the cell division.

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Which of the following is most likely to decrease biodiversity?

frez [133]

Answer:

Add native plants to a suburban garden because you are adding already flourishing wildlife

Sea Urchins are primary consumers because they eat the kelp

Sun -> Grass -> Rabbit because grass lives off of photosynthesis from the sun and rabbit eats the grass

I think there would be more biomass in grass because there is a lot more spread throughout the savannah while elephants are way bigger there is less of them.

5 0

3 years ago

Having freckles (F) is dominant over not having freckles (f). A parent with freckles is crossed with a parent without freckles.

Step2247 [10]

Answer:

This is a trick question, and only because the question is vague

Explanation:

Use a Punnet Square to figure out the percentages.

If the parent with freckles (let's just call them Parent A) is homozygous dominant, their genotype would be FF. The parent without freckles (Parent B) has a genotype of ff.

In any situation, the probability of these two having a child that is homozygous dominant for freckles is 0%. (see punnet squares for more info).

Now here's where it gets a little more confusing because the question is kind of vague on this.

Assuming that Parent A is homozygous dominant (both genes for this are dominant (FF)), then the probability of having a heterozygous (non-identical genotype letters, meaning they carry the recessive trait) genotype is 100%. However, if Parent A is also heterozygous, then that percentage decreases to 50%

For Situation A (Parent A is homozygous dominant), the probability of a homozygous recessive genotype is 0%

For Situation B (Parent A is heterozygous dominant), the probability of a homozygous recessive child is 50%.

Please see the Punnet square I made for more information.

Key:

- Homozygous Dominant: FF

- Heterozygous Dominant: Ff

- Homozygous Recessive: ff

(heterozygous recessive does not exist, because that would mean one of the genes is dominant, which would overpower the recessive gene)

I really hope this helps, and if you're confused by this, please do not hesitate to let me know!

8 0

3 years ago

Read 2 more answers

(70pts) Recall the story of Three Blind Mice where the farmer’s wife cuts off the mouse tails with a carving knife. Because of t

omeli [17]

Answer:

What will happen to the population of mice that it will keep growing at a tremendous rate without a fear of being caught by a predatory. This will increase the population curve of mice but will decrease the population curve of the cat at similar speed.

What else can happen is that cats will no longer be depending on Mice for their food and they will be finding some alternate food host.

What else can happen is the trait of tailless cannot be favored by environment as proposed by Lamarack in his theory of evolution that if organism acquires some favorable trait during his life then it is possible that he will pass this trait to offspring. Though this trait is not naturally induced therefore, there are no chances that tailless mice can born and nature choose it as a favorable trait.

In 1880 August weismenn did experiment of similar nature, he cut off the tails of 20 successive generations of mice abut not a single tailless mouse was born. Therefore, he proved that until nature selects some traits, they are not that easily passed from one generation to another if induced by human.

Conclusion: Therefore, after 50 generation mice will be just like parent mice with tails however they will have good population and less predators.

Hope it help!

4 0

3 years ago

Can colonial organisms live on their own?

sveticcg [70]

The difference between a multicellular organism and a colonial organism is that individual one-celled organisms from a colony can, if separated, survive on their own. so yes colonial organisms can live on their own.

3 0

3 years ago

. This central organelle in plant cells helps to keep the plant cell turgid:

Sergeeva-Olga [200]

Answer:

<h2>The central vacuole</h2>

6 0

3 years ago