Exam 3: Seciton 2: Beginnings: Heredity and Environment

A _____ woman is more likely to experience a successful in vitro fertilization (IVF) pregnancy.

Age has been associated with chromosomal abnormalities in offspring in that the _____ a parent is at conception, the greater the risk of chromosomal abnormalities.

If the 23rd pair of chromosomes is a(n) _____, the individual will be male.

After about the eight-cell stage within the zygote, cells start to _____, meaning that they take different forms and reproduce at various rates depending on where they are located.

The general term for the techniques designed to help infertile couples conceive and then sustain a pregnancy is _____.

A high school science teacher asks the students what cells could be used to produce any other cell in the body. If the students respond with _____ cells, they will be correct.

_____ is the statistic that indicates how much of a variation in a particular trait can be traced to genes.

Research indicates that alcoholism is caused by _____.

When someone inherits a recessive gene that is not expressed, that person is a(n) _____ of that gene.

Jackie rushed into the house after school and announced to her parents, "My personality is _____! So many genes make me who I am!"

Chris learned in her high school science class that a male has _____ on the 23rd pair of chromosomes.

Jeff and Ashley are fraternal twins. They are the result of _____.

_____ are units of instructions for cells located on chromosomes.

A person's collection of genes is referred to as his or her _____.

Almost every human body cell contains _____ chromosomes.

_____ refers to a trait that is affected by many factors, both genetic and environmental, that enhance, halt, shape, or alter the expression of genes, resulting in a phenotype that may differ markedly from the genotype.

Oliver has inherited genes that put him at risk for developing diabetes, but he never develops diabetes due to a healthy diet and exercise. This example demonstrates that human characteristics, including diabetes, are _____.

Individuals' appearance, behavior, and brain and body functions are their _____.