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3 years ago

Why are theories modified but only rarely?

1 answer:

7 0

Theories are modified because they are out of date. There are new discoveries and breakthroughs in science all of the time, so quite often hypothesis' are in need of an update.

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Why do multicellular organisms perform mitosis and meiosis ?

Aleks04 [339]

Answer:

Multicellular organisms depend on mitosis for growth and repair. When an animal, plant or other multicellular organism grows, it makes more cells through mitosis. Organisms can repair some of their tissues, using mitosis to regenerate new cells.

Explanation:

4 0

3 years ago

You are looking at the fossil remains of a primate discovered in Uganda and dating to approximately 20 million years ago. This f

Orlov [11]

Answer:

c. hominoid

Explanation:

Based on the information provided within the question it can be said that in this scenario the best classification for this fossil would be ac. hominoid. This term refer to all the apes species including gibbons, gorillas, chimps, orangutans, and humans. Therefore since the fossil indicates upright posture, slow climbing and hanging below branches we can say that they were hominoid.

6 0

3 years ago

If shelter wood cutting occurs regularly in a large forest, what would be the result after five years?

Sergio [31]

Answer:

I think it is b

Explanation:

3 0

3 years ago

If a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell, what can be said

ankoles [38]

Remember the definition of Osmosis; Water travels through a semipermeable membrane to an area of higher to lower concentration. Since the concentration of a solute is higher outside, we can make the assumption that water concentration is lower, and so the cell is going to release water to balance out and equalize the solution and it's surroundings.

8 0

3 years ago

In corn, the allele A allows the deposition of anthocyanin (blue) pigment in the kernels (seeds), while aa plants have yellow ke

lara31 [8.8K]

Answer:

Explanation:

As given,

Allele A for blue anthocynin.

aa for yellow kernel;

at second locus;

W produce smooth kernel,

ww for wrinkled kernel;

Parents as given are: AaWw and aaww

Progeny are:

blue smooth ( AaWw)= 1447;

blue wrinkle (Aaww)= 169;

yellow smooth (aaWw)= 186;

yellow wirnked (aaww)= 1510

Recombinant progeny are 169+ 186= 355

non- recombinant progeny are = 1447+ 1510= 2957

so recombination frequency (RF)= 346/2957×100= 12.0054%

So a and w are linked genes.

They are 12 mu far away from each other.

b) Blue smooth parent= AaWw.

c) Aaww crossed with aaWw

progeny are= AaWw, Aaww, aaWw, aaww,

They all are produced in same proportion =0.25% or 1/4.

5 0

3 years ago