Download Chapter 11: Human Heredity

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 _______________________________________________