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DF LEP Bio Genetics

DF LEP Bio Genetics Chap 26 & 27

QuestionAnswer
dominant gene a gene that shows when present, it will prevent other genes from showing their traits
gene a small section of a chromosome, made of DNA that determines a specific trait
genetics the study of how genes are passed from parents to offspring
heterozygous AKA hybrid, one dominant and one recessive allele for a trait
homozygous AKA pure or purebred, both alleles are the same, both dominant or both recessive for the same trait
Punnett square a tool to show how genes from sperm and egg can combine to predict offspring traits
recessive gene a gene that does not show when a dominant allele is present
amniocentesis a test done to look at the chromosomes of an unborn fetus
autosome chromosome # 1-22, includes traits that do not determine sex of a person
color blindess sex linked disorder, cannot distinguish red-green color
dyslexia word blindness, an inherited trait
genetic counseling the use of genetics to predict and explain traits in children
incomplete dominance a blending or mixing of two alleles (traits)
pedigree a diagram showing how traits pass from generation to generation
sex chromosome chromosomes that determine sex
sickle-cell anemia recessive genetic disorder where blood cells are sickle shaped
XX chromosomes sex chromosomes for females
XY chromosome sex chromosomes for males
co-dominance both dominant alleles show
Sex linked trait in humans these are traits carried on the x chromosome
genotype shows the genes for the trait ex: Tt
phenotype show how the genes will show physically ex: Tall
allele form a gene may take ex: dominant or recessive
probability the chance of an event happening, predict by using percent
polygenic many genes coding for a trait
multiple alleles more than 2 alleles that are forms of a trait
Created by: dfranek
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