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Alik [6]
3 years ago
11

The Dutch elm pathogen is spread from an infected elm tree to a healthy tree by1.wind-blown or rain-splashed spores2.root grafts

3.both wind-blown/rain-splashed spores and infested elm bark beetles4.both infested elm bark beetles and root grafts5.infested elm bark beetles
Biology
1 answer:
Troyanec [42]3 years ago
4 0

Answer:

5. infested elm bark beetles

Explanation:

Research publication (TERRY A. TATTAR, in Diseases of Shade Trees (Revised Edition), 1989) provided the detail on Dutch elm disease. According to researcher it is caused by <em>Ceratocystis ulmi</em> (fungus). Elm bark beetles carry this fungus from infected wood to the healthy wood.

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Females of the species drosophila pseudoobscura respond less well to the courtship signals from males of their close relative dr
NikAS [45]

The answer is reproductive isolation. This ensures that there is no viable reproduction between different species or subspecies. Even if reproduction between species leads to conception, the embryo may not be able to survive to maturity or will be sterile. This ensures that species remain integral by restricting gene flow.






3 0
3 years ago
Which components would be found in a eukaryotic cell but not in a prokaryotic cell?.
tia_tia [17]

The component which would be found in a eukaryotic cell but not in a prokaryotic cell is the nucleus.

<h3>What is the difference between a eukaryotic and prokaryotic cell?</h3>

A eukaryotic cell is a cell that possesses a true nucleus surrounded  by a nuclear membrane.

Examples of a eukaryotic cell is animal and plant cells.

A prokaryotic cell is a cell that lacks a true nucleus.

Examples of a prokaryotic cell is a bacterial cell.

Therefore, the components which would be found in a eukaryotic cell but not in a prokaryotic cell is the nucleus.

Learn more about eukaryotic and prokaryotic cells at: brainly.com/question/2088739

6 0
3 years ago
For any given gene, what ultimately determines which dna strand serves as the template strand?
vivado [14]
The answer is the base sequence of gene's promoter.

DNA is a two-stranded helix. One strand is called a template strand, the other one is called a coding strand. The template strand is copied into mRNA, and the coding strand is complementary to the template strand. RNA polymerase, an enzyme responsible for transcription, has to recognize the right strand before transcription begins. So, it recognizes one or more short sequences on the coding strand. This is the base sequence of gene's promoter. Thus, the complementary strand is the template strand.
7 0
3 years ago
A researcher studying a group of individuals of the same species living and interacting in a shared environment is said to be wo
Vadim26 [7]

Answer:

the answer is " POPULATION".

Explanation:

A population is a group of individuals of same species living and inhabiting the same environment. in other words : All the inhabitants of a particular space forms a population in which the species interbreed.

so the correct answer is POPULATION.

6 0
3 years ago
Which coefficients balance this equation? _CH4 + _O2 -&gt; _CO2 + _H2O A. 1, 1, 1, 1 B. 1, 1, 2, 1 C. 1, 2, 1, 2 D. 2, 1, 2, 1
ICE Princess25 [194]
C. 1,2,1,2 
 
1 CH4+ 2 O2= 1 CO2+ 2 H20.

when balancing, you need to make sure that each side has the same number of each atom. The reason for this is to abide by the law of conservation of mass; essentially you can't have more or less than you put in the equation. 

When you put the coefficients of C. into the equation you have a total of 2 carbon atoms on each side, 4 hydrogen atoms, and 4 oxygen atoms.


4 0
3 years ago
Read 2 more answers
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