UNIT 2 - PART 2 Flashcards
Explained children’s development in terms of innate biological processes
Biological Theory
______ plays an important role in growth and development of the individual
Heredity
hereditary factor that carry the traits that were contributed by the parents
Genes
a molecule composed of two chains that coil around each other to form a double helix carrying the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses.
DNA – (Deoxyribonucleic acid)
a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.
Chromosomes
determine the features or trait of an organism
Genotype
variants of a gene (Dominant and Recessive)
Allele
contain two identical alleles
Homozygous
two alleles are different
Heterozygous
expression of the genotype; depends on a complex interaction between genes and the environment
Phenotype
influenced by multiple genes interacting with the environment in complex ways
Polygenic traits
traits that are passed on from generation to generation; appeared in all first generation offspring
Dominant traits
appeared in about 1-quarter of the second generation offspring
Recessive traits
used to predict the possible genotypes of an offspring
that may affect the expression of the phenotype
Punnett Square
Punnett Square is devised by
Reginald C. Punnett
Father of Genetics
Gregor Mendel
He formulated three laws that explain how traits are transferred from generation to generation
Gregor Mendel
The Three Laws under Genetics
Law of Dominance
Law of Segregation
Law of Independent Assortment
– the presence of one dominant gene may mask or prevent the expression of recessive gene.
Law of Dominance
– a pair of genes is separated during the formation of gametes with every independent trait or characteristics developing
Law of Segregation
– the separation of gene pairs on a given pair of chromosomes and the distribution of the genes during meiosis are entirely independent of the distribution of other gene pairs on the other pair of chromosomes. Each trait can hence be paired with the other trait in the pair.
Law of Independent Assortment
According to him, there are systems that help human development
Urie Bronfenbrenner (1917-2005) under Ecological Theory
List down the systems that help human development
Microsystem
Mesosystem
Exosystem
Macrosystem
Chronosystem
– locale in which the individual lives; help shape the individual (family, peers, neighbourhood)
Microsystem