15 terms

Pedigrees

sorry for the bad descriptions, i don't know how else to say how it looks on the pedigree. if you need an actual picture, look on page 83 in your course packet
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Terms in this set (...)

Recessive
If the trait is NOT shown in the parents, but is present in the offspring▬then the trait is _______________
Sex-Linked
if the trait skips a generation and has a pattern of male to female carrier to male▬then it is ___-________
Dominant
if the trait is found in every generation, then the trait is most likely ________
Male
square on the pedigree
Female
circle on the pedigree
Unknown sex
diamond on the pedigree
mating
line between a square and circle on the pedigree
pregnancy
unfiilled in, dotted diamond
deceased
line through circle or square on pedigree
Siblings
oldest on the left, youngest on the right- connected from top and line comes down on each
Identical Twins
triangle with lines connecting the two twins
Fraternal Twins
two lines connect the two people and the line comes to a single point (^)
Shaded
has the trait or disorder
Pedigrees are better than punnett squares when:
1. you need to look at several generations
2. you need actual results
3. you have organisms that produce low numbers of offspring
Pedigree
a diagram that shows the phenotype of a particular genetic trait in a family from one generation to the next