My dog, Remington, displays this in his gray and white coat. Red and white striped flowers also display this.
What is codominance
100
Geneticist use these to help analyze family histories for a particular trait
What is a pedigree
100
P x P =
What is F1
100
(D) is normal wings; (d) is dumpy wings. F1 = 300 normal-winged and 100 dumpy winged
What is Dd and Dd (both heterozygous)
200
Having two identical alleles for a gene
What is homozygous
200
A gene at one locus alters the phenotypic expression of a gene at a second locus.
What is epastasis
200
These are heterozygous individuals that appear normal, but can pass the abnormal trait to their offspring
What is a carrier
200
Genotypic ratio of a cross between two heterozygous individuals for 1 trait
What is 1:2:1
200
(R) = red; (W) = white; (RW) = pink. F1= 51 red and 49 pink
What is RR & RW (Red and pink)
300
Determines phenotype in a heterozygote
What is a dominant allele
300
ABO blood groups in humans is determined by this
What is multiple alleles (3 alleles)
300
Most common inherited disorder among people of African decent; symptoms include abnormally shaped red blood cells, physical weakness, pain, organ damage, and paralysis
What is sickle-cell disease
300
Phenotypic ratio for a cross between two heterozygous individuals for two traits
What is 9:3:3:1
300
All gametes = (tS)
What is ttSS X ttSS
400
A cross between an individual with an unknown genotype and a homozygous recessive individual
What is a test cross
400
Given the intricate processes of development and physiology, it isn't surprising that a single gene--or this-- can affect a number of characteristics in an organism
What is pleiotropy
400
Some dominant disorders do not show phenotypic symptoms until the age of 35-45 like Huntington's, making it difficult to prevent inheritance. Any child born to a parent that has this disorder has this chance of inheriting the disease
What is 50%
400
Probabiltiy of getting ccss from the cross CcSs X CcSs
What is 1/16
400
(S) straight hair; (s) wavy hair; (bb) = curly hair F1 = 9 straight, 3 wavy, 4 curly
What is SsBb x SsBb
500
A cross between individuals heterozygous for a single character
What is a monohybrid cross
500
Percent chance of two achondroplasia individuals having a daughter of normal height.
What is 16.6%
500
Heart disease, diabetes, cancer, alcoholism, schizophrenia, and bipolar disease are all classified as this
What are multifactorial disorders
500
Probability of getting AABbCcDd from the cross AABBCCDd X AAbbCcDd
What is 1/4
500
(T) = tall; (t) = short; (R) = red; (W) = white; F1 = All heterogzygous tall and red with white stripes