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Harman [31]
3 years ago
11

as the trait is dominant and controlled by a single gene,the mutation must have occurred on both diploid copies. true or false?

Physics
1 answer:
GenaCL600 [577]3 years ago
5 0

Answer:

False

Explanation:

A dominant trait is a trait that is inherited from parents. It is a trait that is obtained from a particular copy or type of a gene that overshadows or overwhelms the effects of another type or copy of that gene. Dominant traits are controlled by a single gene.

Therefore , as the trait is dominant and controlled by a single gene,the mutation must have occurred on both diploid copies is a false statement.

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What do you mean by the mechanical advantage of a leaver is 4.​
Illusion [34]

Answer:

Explanation:

It means that you only need apply 1/4th of the actual force required to operate the lever as you have an mechanical advantage which permits you to do 4 times the work with the same amount of effort.

7 0
2 years ago
Read 2 more answers
A frame hanging on a wall is held by two cables. The tension in each cable is 30 N, and the cables make an angle of 45° with the
Vesna [10]

Answer:

(D) 42.4N

Explanation:

Since the frame is at rest, the net force acting on it must be 0. There are three forces acting on it: the gravity and the opposing forces of the two cables.

Since the gravity is a vertical force, we are only interested in the vertical components of the remaining forces. The net force equation is

F_net = 0 = F_g -2 * F_y

The vertical force of one cable (using the information in the drawing) is:

F_y = 30N * sin 45 deg = 21.21N

Now the weight can be determined:

0 = F_g - 2 * F_y

F_g= 2 * F_y = 2 * 21.21N = 42.4N

The weight of the frame is about 42.4N.


6 0
3 years ago
Read 2 more answers
A skateboarder traveling at 7.0 meters per second rolls to a stop at the top of a ramp in 3.0 seconds. What is the skateboarder’
ki77a [65]

Answer:

-2.33 m/s²

Explanation:

The computation of the skateboarder’s acceleration is shown below;

Acceleration means the change in velocity per unit with respect to time.

In the given case, the initial velocity is 7 m/s.

As in the question it is mentioned that  it comes to a stop, so the final velocity would be zero.

And, The time elapsed is 3 seconds.

Now the following equation should be used  

a = (v,final - v,initial) ÷ t

=  (0 - 7)/3

= -2.33 m/s²

8 0
2 years ago
What is the weight of a 5-kg object on Earth and on the moon?
vodka [1.7K]

Answer:

It would remain the same on Earth (5-kg) but on the moon, it would be 1-kg

Explanation:

To discover the weight on the moon, we partition the weight on earth by the world's power of gravity, which is 9.81m/s2. This ascertains the mass of the article. When we have the article's mass, we can discover the weight by increasing it by the gravitational power, which it is dependent upon.

6 0
2 years ago
A uniform horizontal strut weighs 400.0 N. One end of the strut is attached to a hinged support at the wall, and the other end o
Olegator [25]

Answer:

Explanation:

Given

Weight of strut W_1=400 N

Weight of sign Board W_2=200 N

In this question angle which cable makes with horizontal is not given so

assuming \theta =30^{\circ}

From Diagram

Moment about hinge point

T\sin 30\times L=W_1\times \frac{L}{2}+W_2\times L

T\sin 30=\frac{W_1}{2}+W_2

T\sin 30=\frac{400}{2}+200

T=800 N

\sum F in x direction is zero

F_x=T\cos 30

F_x=800\cos 30=346.41 N

\sum F in Y direction is zero therefore

F_y+T\sin 30=W_1+W_2

F_y=400+200-800\cdot \sin 30

F_y=200 N

F_{net}\ at\ hinge=\sqrt{F_x^2+F_y^2}

F_{net}=399.99\approx 400 N                              

6 0
3 years ago
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