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Multiple Choice
Which of the following is true about a homologous chromosome pair?
A
They are always inherited from the same parent.
B
They are found only in prokaryotic cells.
C
They contain identical alleles for all genes.
D
They are similar in size and shape and carry the same genes in the same order.
Verified step by step guidance
1
Understand the definition of homologous chromosomes: Homologous chromosomes are pairs of chromosomes in a diploid organism that have the same structure and carry the same genes in the same order, but they may have different alleles.
Recognize that homologous chromosomes are inherited from both parents: One chromosome of the pair is inherited from the mother and the other from the father.
Identify that homologous chromosomes are not found in prokaryotic cells: Prokaryotic cells, such as bacteria, typically have a single circular chromosome and do not have homologous pairs.
Acknowledge that homologous chromosomes do not necessarily contain identical alleles: While they carry the same genes, the alleles for those genes can vary between the two chromosomes.
Conclude that the correct statement about homologous chromosomes is that they are similar in size and shape and carry the same genes in the same order, which allows them to pair up during meiosis.