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77julia77 [94]
3 years ago
13

What are two modes of genetic variation of organisms

Biology
1 answer:
Arada [10]3 years ago
7 0

The genetic variation of organisms has three sources they are mutation, gene flow and sexual reproduction.

Explanation:

Genetic variation are caused by mutation , random mating, random fertilization and recombination between homologous chromosomes during meiosis.

It is a variation in alleles and genes, among the populations. There is a genetic variation within the family of closely- related individuals. If it is a neighborhood there are many families and there is also genetic variation among that group.

An exact genetic copy of the parent organism is produced in asexual reproduction. It only introduces the genetic variation into the population if a random mutation in the organism's DNA is passed on to the offspring.

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3. Decomposers are organisms that obtain energy by breaking down dead matter and recycling the nutrients back into the soil. Dec
kati45 [8]

Answer:

(based of what I would think )

Explanation:

If we didn't have decomposers, the waste left from the food we eat and what the wolves and stuff eat would grow into a problem, we would have ( i think) a mess or something

( more people can answer this better then me)

4 0
2 years ago
How do climates of cities near mountains compare?
Darya [45]

Answer:

if your on a mountian it colder

Explanation:

5 0
3 years ago
24. Which organism would occupy the
Nadusha1986 [10]

Answer:

The organism to have maximum energy would be the algae since ii will be at the lowest level. so the answer is 'B'.

Explanation:

The pyramid of energy shows the flow of energy from one trophic level to other. The lowest trophic level is occupied by the producers. In this case algae acts as the producer. Krill acts as the primary consumer, followed by leopard seal as the secondary consumer and finally killer whale as the tertiary consumer. The <em>lowest trophic level </em> contains maximum energy.

As we go upwards, only 10% of the energy gets transferred to the next trophic level.

6 0
3 years ago
Tall height is dominant to short height in pea plants. You have a tall pea plant that you cross with a short pea plant. What is
zheka24 [161]

Answer:

The tall parent was heterozygous

Explanation:

If tall height is dominant to short height the only genotype possible for short height is hh, while there are two possible genotypes for tall height, Hh and HH. When HH is crossed with hh all the offspring are Hh, but if Hh is crossed with hh, a quarter of the offspring is HH, a quarter is hh and half is Hh. If the tall pea plants were HH there would only be tall offspring, but because there are some short offspring we know that the tall pea plants must have a genotype of Hh.  

5 0
3 years ago
What happens when previous adaptations are no longer suitable for changes in the environment
castortr0y [4]
That is when extinction occurs. Hope I helped!
6 0
3 years ago
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