Multiple Choice
Extrachromosomal inheritance involves genes passed on by the mother's __________.
29. Heredity
Patterns of Inheritance
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An allele that is able to mask the expression of its partner allele is said to be __________.
A
recessive
B
heterozygous
C
homozygous
D
dominant
Verified step by step guidance1
Understand the concept of alleles: Alleles are different forms of a gene that are found at the same place on a chromosome. Each individual inherits two alleles for each gene, one from each parent.
Learn about dominant and recessive alleles: A dominant allele is one that can mask the expression of another allele, which is known as the recessive allele. This means that if an individual has at least one dominant allele, the trait associated with that allele will be expressed.
Differentiate between homozygous and heterozygous: Homozygous means having two identical alleles for a particular gene, while heterozygous means having two different alleles for a gene.
Apply the concept to the problem: The problem asks for the term that describes an allele that can mask the expression of its partner allele. Based on the definitions, a dominant allele is the one that can mask the expression of a recessive allele.
Conclude with the correct term: The allele that is able to mask the expression of its partner allele is called 'dominant'.
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