Which of the following statements is true regarding the “law of ...
The correct answer is D: All of the above.
The "law of segregation" is one of the fundamental principles of genetics, proposed by Gregor Mendel. It states that during the formation of gametes (sex cells), the alleles (alternative forms of a gene) separate from each other. This means that each gamete carries only one allele for each gene.
Option A: The law of segregation does not specifically refer to the purity of genes. Instead, it describes the separation of alleles.
Option B: This statement is correct. The law of segregation states that alleles separate from each other during gametogenesis, which is the process of gamete formation (such as sperm and egg cells).
Option C: This statement is also correct. The segregation of factors (alleles) is due to the segregation of chromosomes during meiosis. Meiosis is a specialized type of cell division that produces haploid cells (gametes) with half the number of chromosomes as the parent cell.
Therefore, the correct answer is D, as all of the statements are true regarding the "law of segregation."
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Which of the following statements is true regarding the “law of ...
Understanding the Law of Segregation
The "law of segregation" is a fundamental principle of genetics that describes how alleles separate during the formation of gametes. Each of the statements provided in the options relates to this principle, and here's a breakdown of why option 'D' is correct.
Law of Purity of Genes
- The law of segregation suggests that genes segregate independently during gamete formation, ensuring that each gamete carries only one allele for each trait. This reflects the concept of gene purity, where the genetic information is maintained without dilution or mixing.
Alleles Separation During Gametogenesis
- During gametogenesis, the alleles for a particular gene separate so that each gamete receives only one allele. This process ensures genetic diversity and is crucial for sexual reproduction.
Segregation Due to Chromosome Behavior in Meiosis
- The segregation of factors (alleles) is directly linked to the behavior of chromosomes during meiosis. During this process, homologous chromosomes are separated into different gametes, leading to the distribution of different alleles.
Conclusion
- Since all three statements accurately describe aspects of the law of segregation, the correct answer is indeed option 'D' — "All of the above." This encapsulates the law’s importance in genetics, highlighting how genetic traits are inherited and passed on to the next generation. Understanding this principle is crucial for comprehending inheritance patterns and genetic variation.