Multiple Choice
A person without a Y chromosome will __________.
29. Heredity
Overview of Human Genetics
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Any two matched genes that are __________ are called alleles.
A
at the same position on the sex chromosomes
B
found only in the mother
C
found only on autosomes
D
at the same locus on homologous chromosomes
Verified step by step guidance1
Understand the concept of alleles: Alleles are different versions of the same gene that can exist at a specific locus on a chromosome.
Recognize the term 'locus': A locus is the specific physical location of a gene on a chromosome.
Identify homologous chromosomes: These are pairs of chromosomes that have the same structure and carry the same genes, but may have different alleles.
Determine the correct placement of alleles: Alleles are located at the same locus on homologous chromosomes, meaning they occupy the same position on each chromosome in the pair.
Clarify the distinction from other options: Alleles are not specifically related to sex chromosomes, nor are they exclusive to autosomes or found only in the mother.
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