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Multiple Choice
Which of the following structures is found in a pair of homologous chromosomes?
A
Different lengths
B
Different centromere positions
C
Identical alleles
D
Same genes at the same loci
Verified step by step guidance
1
Understand that homologous chromosomes are pairs of chromosomes that have the same structure and size, and they carry the same genes at the same loci, but they may have different alleles.
Recognize that homologous chromosomes are not necessarily identical in terms of the alleles they carry, but they do have the same genes at the same positions (loci) on each chromosome.
Different lengths and different centromere positions are not characteristics of homologous chromosomes. Homologous chromosomes are similar in length and centromere position.
Identical alleles are not a requirement for homologous chromosomes. They can have different alleles for the same gene.
The key feature of homologous chromosomes is that they have the same genes at the same loci, which allows them to pair up during meiosis and exchange genetic material through crossing over.