Biopsychology 1 Flashcards
What is biopsychology?
The study of how biology influences behavior, focusing on the structures and functions of the nervous system.
What do biopsychologists study?
They study genetics, sensory and motor systems, sleep, drug abuse, neurodevelopment, and the biological basis of behavior.
What is the role of genetics in biopsychology?
Genetics helps biopsychologists understand the biological basis of behavior and psychological conditions like depression and schizophrenia.
How many chromosomes do human gametes carry?
23 chromosomes each (sperm and egg).
What is DNA?
DNA contains sequences of genes that control visible traits and characteristics.
What is the difference between genotype and phenotype?
Genotype refers to genetic makeup, while phenotype refers to observable traits.
What is a monogenic trait?
A trait controlled by a single gene.
What is a polygenic trait?
A trait controlled by multiple genes.
What is an allele?
Different versions of a gene.
What does homozygous mean?
Having two copies of the same allele.
What does heterozygous mean?
Having two different alleles for a gene, where the dominant allele controls the phenotype.
What is a dominant allele?
An allele that expresses its trait even if only one copy is present.
What is a recessive allele?
An allele that only expresses its trait when two copies are present.
What is a gene mutation?
A permanent change in a gene’s DNA sequence.
