Genetics Flashcards
Genetics
Genetics is the study of inheritance of characteristics
Inheritable characteristics
Inheritable characteristics many physical characteristics such as eye colour and shape of ears were inherited from your parents.
Chromosomes
Chromosomes the nucleus of each sex cell (gamete ) contains 23 thread like structures called chromosomes
Genes
Genes are chemicals found on chromosomes that pass on information from parents to children
Dna
DNA Deoxyribonucleic acid
Chromosomes are made of
Chromosomes are made of protein + DNA. These chromosomes carry genes
46 chromosomes
46 chromosomes when an egg and sperm cell fuse ( each has 23 chromosomes) they give the individual they are creating 46 chromosomes.
Homozygous
The presence of two identical alleles at a particular gene locus.
Heterozygous
Being homozygous for a particular gene means you inherited two identical versions.
Recessive
relating to or denoting heritable characteristics controlled by genes which are expressed in a offspring only when inherited from both parents.
Dominant
a dominant trait or gene.
Biodiversity
Biodiversity there are many different types of living things
Fossils
Fossils the remains of very ancient living things
Extinct
Extinct some living things disappear
Natural selection
Natural selection how the variety of living things may have arisen,the most widely accepted explanation based on evidence is the theory of evolution by natural selection.
