1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
poizon [28]
3 years ago
13

What must be true for natural selection to happen?

Biology
1 answer:
Mila [183]3 years ago
3 0

Answer: Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.

Explanation:

You might be interested in
How do we get Proteins
Leona [35]

Answer:

By eating things with protein in it. Sorry if this sounds too simple, but that's all it is.

8 0
3 years ago
Read 2 more answers
Introduction of an invasive species to an ecosystem can have some harmful effects including predation of existing species, compe
gregori [183]

B is the most effective and feasible, and it prevents the initial introdution of the species

3 0
2 years ago
Assuming no genetic recombination, how many genetically distinct types of gametes can a single human being make?
Georgia [21]

Answer:

Explanation:

Each chromosome represents a twin.like pairs of socks.

This is an analogous problem: you have 2 pairs of socks, one white, one black. Each of the sock is tailored to a specic foot, right or left. How many different ways can the socks be mixed and matched , one for each foot?

Here are the possibilities : left = black, right = black is one such match. Left = white, right = black is another.

so also we will have 23 chromosome pairs

3 0
3 years ago
If glucose is not the energy of the cell, what is? how does glucose relate to this?
mote1985 [20]

Answer:

Adenosine triphoshate(ATP) is the energy currency of the cell.

Explanation:

Glucose is the Stored energy which is formed by the Glycogen. At the time when the energy is required glycogen is converted into glucose while, ATP is the energy which is ready to use. In aerobic conditions, Glucose produces about 30 ATP molecules. ATP molecule consists of HIGH ENERGY PHOSPHATE BONDS which are broken down when energy is required.

<u><em>ADP + inorganic phosphate (pi)</em></u><em>forms</em><u><em> ATP</em></u>

8 0
3 years ago
You perform an experiment in which chromatin is isolated from sea urchin sperm cells and briefly digested with micrococcal nucle
irga5000 [103]

Answer:

a) DNA fragments associated with histone proteins are all multiple in length (i.e., 260 bp, 520 bp, 780 bp, etc), thereby suggesting the presence of a pattern of organization in the chromatin  

b) it suggests that each unit of organization (ie, each nucleosome) consists of 260 bp associated with chromatin proteins

Explanation:

The nucleosome is considered as the basic unit of chromatin. A nucleosome consists of approximately two turns of DNA wrapped around a core of eight histone proteins (i.e., a histone octamer). The histone octamer consists of two copies of each of the histones H2A, H2B, H3, and H4. Moreover, the nucleosomes are connected together by linker DNA sequences which vary between 10 and 100 bp in length.

8 0
2 years ago
Other questions:
  • If your sleeping for 33% of the day how many hrs is that?​
    12·2 answers
  • Cats can begin reproducing as young as six months of age. Each female cat can produce two litters per year, containing multiple
    6·2 answers
  • Which part of Earth is included in the hydrosphere?
    14·2 answers
  • Unlike endocrine glands, exocrine glands
    12·1 answer
  • ¿Quién fue Robert Hooke? Rápido y corto.
    15·1 answer
  • While observing slides under a microscope, Jack adjusts the microscope's mirror so that a circle of light can be seen. Which mic
    11·1 answer
  • the movement of molten iron in earths core makes the planet act like a giant bar ______________, with one pole near the top of t
    11·1 answer
  • Name &amp; explain the properties of water
    14·1 answer
  • On the coast strong seabreeze is move cool air into the land replace warm rising air, this often causes what?
    15·1 answer
  • Since prokaryotic cells _______________________, they have the ability to adapt faster to changing environmental conditions than
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!