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Zina [86]
3 years ago
8

.A small moth pollinates native trees when they bloom in April. Some of the moths emerge in early March and discover a different

blooming shrub to use as a resource. This is an example of what, over time, could be ________.
A) sympatric speciationB) allopatric speciationC) an invasive speciesD) an extinction for the original populationE) a change in age structure of the original population
Biology
1 answer:
kramer3 years ago
8 0

Answer:

The correct option is: A) sympatric speciation

Explanation:

Sympatric speciation is a type of geographic mode of speciation. It refers to the evolution of two or more than two new or descendant species from the  existing common descent. The new species and the ancestral species all live in the same geographic area or location.

The common example of this speciation is insects like moths that become dependent on different plants belonging to the same geographical area.

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our study partner has drawn four models of membrane-bound vesicles to try to show what a vesicle would look like with water both
Citrus2011 [14]

Answer:

The answer (Image 1) is attached. Since the options weren't provided, I've attached the image of the options, too.

Explanation:

The plasma membrane is composed of phospholipids, a special form of lipids with a hydrophilic head and hydrophobic tail. According to the fluid mosaic model, the hydrophilic heads are positioned towards the outside where they freely interact with the extracellular matrix and cytosol. Whereas, the hydrophobic tails are positioned towards the inside so they aren't exposed to water.

Liposomes are lipid bases particles used for drug and vector delivery. The picture shows a typical liposome.

In the current case, for water to move both outside and inside, hydrophilic heads should be present inside as well as outside the tails.

7 0
3 years ago
What are two internal factors that organisms respond to?
Amanda [17]
There are many internal factors which living organisms respond to, two of them are temperature and hormone levels. Organisms respond to internal factors in order to stay healthy and survive. The internal environment of living organisms has to be kept relatively constant, this is constancy is achieved through the process of homeostasis.
5 0
3 years ago
Read 2 more answers
A mouse geneticist selected for increased 12-day litter weight (total weight of a litter of offspring 12 days after birth) in a
wlad13 [49]

Answer:

12-day litter weight is a trait that has an important genetic influence and therefore also a high response to selection

Explanation:

Heritability is a statistical measure of how much of the variation in a given trait can be attributed to genetic differences and how much of trait variation is due to environmental factors. A heritability value close to 1 indicates that almost all of the variability is due to genetic factors, while being poorly influenced by environmental factors. In this case, 12-day litter weight is a trait that exhibits an important genetic component (i.e., a high heritability value), thereby the correlation between parent and offspring will be high and lines selected for this trait will show a high response to selection.

4 0
3 years ago
The Sargasso Sea, which Bermuda is in the middle of, is a huge nursery for over ______ species of ocean life, meaning they ONLY
e-lub [12.9K]

Answer:

1)200

Explanation:

The Sargasso Sea is constantly considered a lifeless environment, due to its high salinity and temperature, which are considered inhospitable for most species. However, the Sargasso Sea is rich in local species, accounting for more than 200 of them, composed of algae, crustaceans, fish, microorganisms, among others.

8 0
3 years ago
7 + 7 + (–1) = <br><br> A. 13 <br> B. 10 <br> C. 16 <br> D. 7
Burka [1]
Step 1. Simplify brackets

7+7-1

Step 2. Simplify

13

Done! :) Your answer is A. 13 Hope this helps!
4 0
3 years ago
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