All categories

3 years ago

Which statement about Thomas Hunt Morgan’s conclusion is true?

Biology

2 answers:

Charra [1.4K]3 years ago

7 0

ill speak English and say its D

belka [17]3 years ago

5 0

Answer:

Traits like white eye color in fruit flies are linked to the X chromosome.

Why:

Thomas Hunt Morgan was a scientist, he worked with Drosohilla and studied the sex chromosomes in fruit flies. In the course of his study he discovered that the white eye colour is recessive compared to the dominant red eye colour in the flies and that the white eye color gene is linked to the X sex chromosomes.

You might be interested in

For what fraction or percent of geologic time have land plants been present on earth

svet-max [94.6K]

According to finding of scientist, the earth is roughly 4,600 million years old. then the non abundant fossil that they dated was about 3,600 million years old. so the fraction or percent of <span>geologic time is :

3,600 / 4600 = 0.78 or 78 % of earth geologic time</span>

6 0

3 years ago

The price of a book is thrice that of an exercise book. of a student spend #9600 on book and #8000 on exercise book, he has 56 i

poizon [28]

Answer:

a) price of an exercise book = #200

b) #400

Explanation:

Let x represent the price of the book

Let y represent the price of the exercise book

- According to this question, the price of the book is thrice that of an exercise book i.e. x = 3y

- Also, the question states that if a student spend #9600 on book and #8000 on exercise book, he has 56 items altogether. This means that to get how many books and exercise books he bought, we divide the price of book and exercise book he bought by the price of each book (x) and exercise book (y) respectively. Mathematically, this means:

- Student bought 9600/x books

- Student bought 8000/y exercise books

So, 9600/x books + 8000/y exercise books = 56 item

9600/x + 8000/y = 56

Since x = 3y

We can say;

9600/3y + 8000/y = 56

Find the L.C.M of 3y and y = 3y and solve using fraction method (see attachment).

9600 + 24000/3y = 56

33600/3y = 56

Cross multiply

33600 = 56 × 3y

33600 = 168y

Divide both sides by 168

33600/168 = 168y/168

200 = y

y = 200

Since, x = 3y

x = 3 × 200

x = 600

Therefore, the price of book (x) and exercise book (y) are #600 and #200 respectively.

b) The difference between the price of a book and an exercise book i.e. x - y

= #600 - #200

= #400

6 0

3 years ago

Is wetland salt water or fresh water ?

Jet001 [13]

The water found on wet lands is either brackish , fresh water or salt water the main wetland types are swamp , marsh and bog and fog and most wet lands are pet lands

8 0

3 years ago

1. How do artificial stabilization and development impact shorelines? Explain.

lora16 [44]

Explanation:

Natural shorelines are the undeveloped fringe areas along the edge of a waterbody, which connect the shallow aquatic portion of the waterbody with adjacent upland. These riparian areas provide important environmental functions, such as regulating water quality (including temperature, clarity, nutrients, and contaminants) and sustaining critical habitat for a variety of aquatic and terrestrial organisms (including invertebrates, fish, amphibians, reptiles, shorebirds and waterfowl, and mammals).

For decades, "traditional" shoreline stabilization methods have centered on "hard" construction approaches such as vertical concrete, metal, or wood break-walls, gabions (stone-filled wire baskets) and rip rap (loose rocks or stones). Biologists and engineers now realize that in addition to creating a physical barrier, these hardened vertical or near-vertical structures reflect wave energy rather than absorb it, thereby worsening turbulence and increasing erosion in front of, under and adjacent to the "fix".

The effects of turbulence and erosion are not as severe when rip rap is used because it absorbs some of the energy from moving water. However, depending on its size and placement, rip rap still can create a barrier to many wildlife species, and, as with solid structures, reduces vegetated habitat.

The adverse effects of traditional shoreline stabilization methods can be significant, as hard erosion-control solutions do not provide the water quality or habitat benefits of a natural or restored vegetated shoreline.

New ecology research reports that different ski slope construction methods can greatly impact mountainside ecology. Grading removes more vegetation than clearing and makes the soil less conducive for plant growth, which results in more erosion.

Conclusion

Is artificial stabilization and development really working?

Methods such as seawalls do actually help to protect shorelines from being flooded by strong waves, but if the wave bounces off the wall, there will.be more erosion.

Developers continue to attempt to protect our terrain but it is most likely not helping as much as they hoped it would.

4 0

4 years ago

What are four roles that proteins play in living things?

Ganezh [65]

Answer:

Proteins are macromolecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs

6 0

3 years ago