life science Chapter5Genetics
Terms
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- recessive
- describes a trait that is covered over, or dominated, by another form of trait and seems to disappear
- dominant
- describes a trait that covers over, or dominates, another form of that trait
- punnet square
- a tool to predict the probability of certain traits in offspring that shows the different ways alleles can combine
- allele
- an alternate form that a gene may have for a single trait; can be dominate or recessive
- hybrid
- an offspring that was given different genetic information for a trait from each parent
- genetic engineering
- biological and chemical methods to change the arrangement of a gene's DNA to improve crop production
- incomplete dominance
- production of a phenotype that is intermediate between the two homozygous parents
- homozygous
- describes an organism with two alleles thats are the same for a trait
- genetics
- the study of how traits are inherited through the actions of alleles
- heredity
- the passing of traits from parent to offspring
- phenotype
- outward physical appearance and behavior of an organism
- heterozygous
- describes an organism with two different alleles for a trait
- polygenic inheritance
- occurs when a group of gene pairs acts together and produces a specific trait eye and skin color height
- sex-linked gene
- an allele inherited on a sex chromosome, can cause human genetic disorders
- genotype
- an organism's genetic makeup