Question

In the early part of this century, Nilsson-Ehle, East, and others described experiments showing that multiple loci may be involved in the inheritance of certain traits. Such patterns are often called ________. [QUES_946458_1304382_A6116496]

Answer 1

The experiments by Nilsson-Ehle, East, and others describe 'polygenic inheritance' where multiple genes determine certain traits, a concept that extends beyond simple Mendelian genetics.

Step-by-step explanation:

In the early part of this century, Nilsson-Ehle, East, and others described experiments showing that multiple loci may be involved in the inheritance of certain traits. Such patterns are often called polygenic inheritance. This is different from the simple Mendelian genetics where traits are determined by a single gene. Instead, polygenic inheritance involves multiple genes, and each gene can have multiple alleles that contribute to the final phenotype.

Patterns of inheritance such as autosomal dominance, autosomal recessiveness, X-linked dominance, X-linked recessiveness, incomplete dominance, codominance, and lethality are important in human genetics and genetic disorders. A change in a nucleotide sequence that leads to these distinct patterns, whether or not it changes the phenotype, is known as a mutation.