Mian Muhammad Abbas Abbasi

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KeysOf Grand test

"اپنے اک ادنا تماشے کے لئے ہم کو سولی پر چڑھایا، یار نے۔"

اسان جي عيد تہ تڏهن ٿيندي، جڏهن ڪينجهر ڪناري تون ۽ مان امن ۽ محبت جا گيت ڳائينداسين.

ذوالفقار ڀٽو جي ورسي جي موقعي تي سنڌ حڪومت 4 اپريل 2023 تي سڄي صوبي ۾ عام موڪل جو اعلان ڪري ڇڏيو. نوٽيفڪيشن جاري

Second Grand test of MDCAT key

Gene Pool MCQs

Knowledge Hub
Mcqs on gene pool

What is a gene pool?
a. The total genetic information of an individual
b. The total genetic information of a population
c. The total number of genes in an organism
d. The total number of alleles in an individual
Answer: b. The total genetic information of a population

Which of the following factors can affect the gene pool of a population?
a. Mutation
b. Gene flow
c. Genetic drift
d. All of the above
Answer: d. All of the above

Which of the following is an example of gene flow?
a. A new mutation arises in a population
b. A group of individuals migrates into a new area and mates with the local population
c. The frequency of an allele changes due to random chance
d. A population becomes isolated and experiences a decrease in genetic diversity
Answer: b. A group of individuals migrates into a new area and mates with the local population

Which of the following can lead to a decrease in genetic diversity in a population?
a. Gene flow
b. Genetic drift
c. Mutation
d. Natural selection
Answer: b. Genetic drift

Which of the following is an example of genetic drift?
a. A population of birds evolves longer beaks over time to better adapt to their environment
b. A catastrophic event wipes out most of a population, leaving only a few individuals to rebuild the population
c. A new mutation arises in a population and spreads rapidly through the population
d. A group of individuals migrates into a new area and mates with the local population
Answer: b. A catastrophic event wipes out most of a population, leaving only a few individuals to rebuild the population

Knowledge Hub
Gene pool detail notes

A gene pool is the total genetic information of a population. It includes all the alleles, or alternate versions of a gene, that exist within a population. Alleles can be dominant, recessive, or co-dominant, and they determine an organism's traits.

The gene pool of a population can be affected by several factors, including mutation, gene flow, genetic drift, and natural selection.

Mutation is a random change in the DNA sequence that can create a new allele. Mutations can occur spontaneously or can be induced by environmental factors such as radiation or chemicals.

Gene flow occurs when individuals or their gametes move between populations. This can introduce new alleles into a population, or increase the frequency of existing alleles. Gene flow can occur through migration or the movement of pollen or seeds.

Genetic drift refers to random fluctuations in allele frequencies within a population. Genetic drift can occur due to chance events, such as the death of individuals or the failure of some alleles to be passed on to the next generation. Genetic drift is more likely to occur in small populations and can lead to a decrease in genetic diversity.

Natural selection occurs when certain traits give individuals an advantage in surviving and reproducing. Over time, the frequency of advantageous alleles may increase in a population, while the frequency of disadvantageous alleles may decrease.

The gene pool of a population is important for understanding the genetic diversity and evolution of a species. It can also be used to study the inheritance of traits and to develop strategies for conserving endangered species.

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