Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Chapter 11: Human Heredity Section 1: “It Runs in the Family” “It Runs in the Family” Many of the characteristics of human children are ________________________ determined Many human traits are inherited by the action of ________________________ ___________________________________________________, although other traits are determined through more complicated gene interactions Genetics is one of the ______________________________________________ fields in biology The Human Organism The study of ourselves begins with _____________________________________ A human ______________________ cell contains ________________________ arranged in ____________________________ These 46 chromosomes contain _______________________________________ _____________________ of DNA The principles of genetics described by Mendel require that organisms inherit a single copy of each gene from each parent In humans, the ___________________________, or reproductive cells, contain a ___________________________________ of each gene Gametes are formed in the reproductive organs by the process of ________________________ Each egg cell and sperm cell contain ___________________________________ During fertilization, sperm and egg unite and a _______________________, or fertilized egg, is produced Of the 46 chromosomes found in a human diploid cell, two are the _____________________________________________ The remaining 44 chromosomes are the ________________________________ Human Traits There are some traits that are strongly influenced by environmental factors o ______________________________________________________ Although it is important to consider the influence of the ____________________________ on the expression of some genes, it must be understood that environmental effects on gene expression are not inherited; ___________________________ o Genes that are denied a proper environment in which to reach full expression in one generation can, in a proper environment, achieve full potential in a _______________________________________________