Question
Which of the following increases genetic variation in sexually reproducing organisms?(2 points)
Responses
Crossing over
Crossing over
Independent assortment
Independent assortment
Mutation
Mutation
Segregation
Responses
Crossing over
Crossing over
Independent assortment
Independent assortment
Mutation
Mutation
Segregation
Answers
Answer
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Answered by
GPT-4o mini
All of the following processes contribute to genetic variation in sexually reproducing organisms:
1. **Crossing over**: This occurs during meiosis when homologous chromosomes exchange segments of DNA, leading to new combinations of alleles.
2. **Independent assortment**: This refers to the random distribution of maternal and paternal chromosomes into gametes during meiosis, leading to a variety of genetic combinations.
3. **Mutation**: This is a change in the DNA sequence that can introduce new alleles into a population, contributing to genetic diversity.
4. **Segregation**: This is the separation of alleles during gamete formation, ensuring that each gamete receives only one allele for each gene.
All these processes play important roles in increasing genetic variation, but the best way to capture the essence of genetic variation in sexually reproducing organisms would typically emphasize **crossing over** and **independent assortment** as key mechanisms in meiosis, while **mutation** introduces new allelic options and **segregation** ensures alleles are distributed into gametes.
1. **Crossing over**: This occurs during meiosis when homologous chromosomes exchange segments of DNA, leading to new combinations of alleles.
2. **Independent assortment**: This refers to the random distribution of maternal and paternal chromosomes into gametes during meiosis, leading to a variety of genetic combinations.
3. **Mutation**: This is a change in the DNA sequence that can introduce new alleles into a population, contributing to genetic diversity.
4. **Segregation**: This is the separation of alleles during gamete formation, ensuring that each gamete receives only one allele for each gene.
All these processes play important roles in increasing genetic variation, but the best way to capture the essence of genetic variation in sexually reproducing organisms would typically emphasize **crossing over** and **independent assortment** as key mechanisms in meiosis, while **mutation** introduces new allelic options and **segregation** ensures alleles are distributed into gametes.
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