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ANEK [815]
3 years ago
13

The section of DNA within a chromosome that codes for a specific protein Is called

Biology
2 answers:
ASHA 777 [7]3 years ago
5 0
I believe the answer is rna
lorasvet [3.4K]3 years ago
3 0
.....called gene

Cuz each chromosome contains thousands of different genes
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Sometimes genes, for no known reason, change their form in a process called spontaneous __________.
cupoosta [38]

Answer:

Mutation.

Explanation:

Mutation may be defined as the sudden heritable change in the DNA sequence of the organisms. Mutation can results in the change in the genotype and phenotype of the organisms.

Two main types of mutation are spontaneous mutation and induced mutation. Induced mutation occurs intentionally with the help of the mutagens. Spontaneous mutation is the natural mutation that occurs for the no known reason.

Thus, the answer is spontaneous mutation.

7 0
4 years ago
Compare the leaf hairs on the upper leaf surface with the leaf hairs on the lower leaf surface.
Anestetic [448]

The main difference between upper

epidermis and lower epidermis is

that upper epidermis possesses a cuticle layer whereas lower

epidermis possesses a large number

of stomata. surfaces, respectively. ... possesses a cuticle layer whereas lower epidermis possesses a large number of stomata

5 0
3 years ago
Read 2 more answers
(82 POINTS AND BRAINLYEST)
ioda

Answer:

1 all of the above.

2 fire and land slide.

3 forest fire or all of the above.

3 0
3 years ago
3) identify and describe three abiotic characteristics of ecosystems. Give an example of how each
HACTEHA [7]

Answer:

The abiotic characteristics of an ecosystem that affects man includes: Land surface, rainfall and relative humidity.

Explanation:

In the ecosystem, man occupies the terrestrial habitat which is affected by the abiotic factors listed above.

Abiotic (non- living) factors determine the type of biotic (living) community that is found in an ecosystem. These factors include Land surface, rainfall and relative humidity, just to mention a few.

--> LAND SURFACE: This is responsible for the marked variation in the vegetation of a place. For example, a mountain in the tropics may have a rain forest vegetation at it's base and an afroalpine vegetation near its peak. The gradient of the slope affects the growth of organisms. A steep slope encourage fast run - off of water and therefore encourages erosion, which results in shallow and infertile soil. This in turn AFFECT man's farming activities as there would be little to no crop yield.

--> RAINFALL: Water is a very important abiotic factor that affects life. The main source of water to terrestrial habitat is rainfall. When rain falls, a greater percentage of it sinks into the soil while the rest run- off into water bodies. Water is absorbed by root hairs into the plant and used for photosynthesis to produce food. The absence of rainfall in the environment of man could lead to drought which AFFECTS man negatively.

--> RELATIVE HUMIDITY: This is a measure of the amount of moisture in the atmosphere. It's usually high in hot wet regions. It affects the rate at which water evaporates from the body surfaces of organisms. Low relative humidity cause more water (sweat) to evaporate from body surfaces giving the human body a cooling effect. But in high relative humidity, the sweat cannot evaporate leaving the body feeling hot and sticky. This AFFECTS man as the body tries to cool off in a harder way by increasing rate of respiration and depth of blood circulation.

3 0
3 years ago
During dna replication, two extra guanine bases are added to the dna. what type of mutation is this?
Veronika [31]
C. frameshift mutation
7 0
3 years ago
Read 2 more answers
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