Multiple Choice
A diploid individual carrying two different alleles at a given gene locus is called:
35
views
3. Extensions to Mendelian Inheritance
Variations of Dominance
Struggling with Genetics?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
If the phenotype reflects the activities of more than one gene, it is called a ______ trait.
A
monogenic
B
codominant
C
incompletely dominant
D
polygenic
Verified step by step guidance1
Understand the definition of the term 'polygenic trait': it refers to a phenotype that is influenced by the combined effects of more than one gene.
Recall that 'monogenic' traits are controlled by a single gene, so this does not fit the description of multiple genes affecting the phenotype.
Recognize that 'codominant' and 'incompletely dominant' describe specific types of gene interactions at a single gene locus, not multiple genes contributing to a trait.
Identify that when multiple genes contribute additively or interactively to a phenotype, the trait is called 'polygenic'.
Conclude that the correct term to fill in the blank is 'polygenic' because it best describes a trait influenced by more than one gene.
4:37mWatch next
Master Variations on Dominance with a bite sized video explanation from Kylia
Start learningRelated Videos
Related Practice
Variations of Dominance practice set
Problem sets built by lead tutorsExpert video explanations