Chapter 9.1- 9.2 - Lifespan Development Flashcards
(22 cards)
The single cell formed at conception from the union of the egg cell and sperm cell
Zygote
A long, threadlike structure composed of twisted parallel strands of DNA; found in the cell nucleus
Chromosome
The double–stranded molecule that encodes genetic instructions; the chemical basis of heredity
Deoxyribonucleic acid (DNA)
A unit of DNA on a chromosome that encodes instructions for making a particular protein molecule; the basic unit of heredity
Gene
The genetic makeup of an individual organism
Genotype
The scientific description of the complete set of DNA in the human organism, including gene locations
Human genome
One of the different forms of a particular gene
Allele
The observable traits or characteristics of an organism determined by the interaction of genetics and environmental factors
Phenotype
Chromosomes, designated as X or Y, that determine biological sex; the 23rd pair of chromosomes in humans
Sex chromosomes
The stage of development before birth; divided into the germinal, embryonic, and fetal periods
Prenatal stage
The first two weeks of prenatal development
Germinal period
The second period of prenatal development, extending from the third week through the eighth week
Embryonic period
Harmful agents or substances that can cause malformations or defects in an embryo or fetus
Teratogens
The third and longest period of prenatal development, extending from the ninth week until birth
Fetal period
The emotional bond that forms between an infant and caregiver, especially his or her parents
Attachment
The words that are understood by an infant or child
Comprehension Vocabulary
The words that an infant or child understands and can speak
Production vocabulary
In piaget’s theory, the first stage of cognitive development, from birth to about age 2; the period during which the infant explores the environment and acquires knowledge through sensing and manipulating objects
Sensorimotor stage
The understanding that an object continues to exist even when it can no longer be seen
Object permanence
In Piaget’s theory, the second stage of Cognitive development, which last from about age 2 to age 7; characterized by increasing use of symbols and prelogical thought processes
Preoperational stage
The ability to use words, images, and symbols to represent the world
Symbolic thought
The branch of psychology that studies how people change over the lifespan
Developmental psychology
