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Multiple Choice
Which of the following characteristics do homologous chromosomes exhibit?
A
They are always inherited from the same parent.
B
They are identical copies of each other.
C
They are found only in prokaryotic cells.
D
They have the same genes at the same loci but may have different alleles.
Verified step by step guidance
1
Understand the concept of homologous chromosomes: Homologous chromosomes are pairs of chromosomes in a diploid organism that have the same structure and gene sequence. They are inherited from both parents, one from the mother and one from the father.
Identify the key characteristic of homologous chromosomes: They have the same genes at the same loci, which means the same position on the chromosome, but they may have different alleles. Alleles are different versions of a gene that can lead to variations in traits.
Clarify why homologous chromosomes are not identical: While they have the same genes, the alleles can differ, leading to genetic diversity. This is why homologous chromosomes are not identical copies of each other.
Explain why homologous chromosomes are not exclusive to prokaryotic cells: Homologous chromosomes are found in eukaryotic cells, which include plants, animals, and fungi. Prokaryotic cells, such as bacteria, typically have a single circular chromosome and do not have homologous pairs.
Discuss inheritance of homologous chromosomes: Homologous chromosomes are inherited from both parents, not just one. Each parent contributes one chromosome to the pair, ensuring genetic diversity and variation in offspring.