Which is a point mutation?

Answers

Answer 1
Answer: A point mutation, or single base modification, is a type of mutation that causes a single nucleotide base change, insertion, or deletion of the genetic material, DNA or RNA.

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In the alternation of generations life cycle the zygote undergoes mitosis to become aA. gametophyte.
B. sporophyte.
C. spore.
D. gamete.

Answers

In the alternation of generations in plants a zygote undergoes mitosis to become a diploid (B) sporophyte.

Which describes a potential benefit for the environment that stems from genetic engineering?

Answers

Phytoremediation describes a potential benefit for the environment that stems from genetic engineering.Environmental pollution is a huge problem around the globe and this is resulting in global warming, which in turn is resulting in the increase of the ocean levels. This is the process by which the contamination of soils is reduced.

Answer:

The answer is C. Phytoremediation on e2020

Explanation:

Random changes in allele frequency in a population are called:gene flow

genetic drift

microevolution

stabilizing selection

Answers

Random changes in allele frequency in a population are usually called genetic drift. The reason why this is the answer is because it is a very specific word which is used to describe exactly that - random changes in allele frequency. 

All the other cases; answers, here aren't correct and don't apply. 

Final answer:

Genetic drift is the random changes in allele frequency in a population.

Explanation:

Random changes in allele frequency in a population are called genetic drift. Genetic drift refers to the random fluctuations in the frequencies of alleles in a population, caused by random sampling effects. It is one of the mechanisms of microevolution, which refers to the changes in allele frequencies within a population over time. It is different from gene flow and stabilizing selection, which are also mechanisms of microevolution.

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Q: 4 animals that can see wave not visible

Answers

Answer:

I know only know two  :(

Explanation:

Snakes and  frogs I guess bees also coming not sure :)

Hope this is helpful :)

The demographic transition theory helps explaina. why people move.
c. how migration is related to pull factors.
b. how to gather the demographic statistics of a society.
d. how population change is related to the technological development of a society.

Answers

Correct answer: D). How population change is related to the technological development of a society.

The Demographic Theory was given by Warren Thompson in 1929. He observed that birth and death rate pattern over 200 years. In his observation, he found that there is a correlation between the birth and death rate and the amount of society depend on industrial technology.

The demographic transition theory predicts that the level of death and birth rate in a country is dependent on the level of their industrial development.





Final answer:

The demographic transition theory mainly describes how population change is connected to a society's technological development. It emphasizes four stages, where advancements in technology and changes in societal norms influence shifts in birth and death rates, thus impacting population growth.

Explanation:

The demographic transition theory primarily addresses option (d) - how population change is related to the technological development of a society. The theory outlines four stages of demographic transition. In Stage 1, both death rates and birth rates are high, with little population growth. As a society transitions into Stage 2, advancements in technology and health care practices cause a decrease in death rate, while birth rate remains high, leading to increased population growth. Stage 3 sees a gradual decrease in birth rate due to societal changes such as increased urbanization and education, thus slowing population growth. Finally, in Stage 4, both death and birth rates are low, leading to a fairly stable population size.

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When determining the taxon based on morphology, a scientist is relying on genetic similarities. True or False

Answers

The answer is true.

 

In morphology, the scientist relies on genetic similarities in determining taxon based.

Morphology is the branch of science which deals with the study of structure and form of organisms and also the organism’s specific structural features.