Heredity/Genetics S2 Flashcards
Heredity *
The passing of traits from parent to offspring.
Genetics*
The study of how traits are inherited.
Punnett Square *
A diagram that predicts the way genes will be combined when passed from parent to offspring.
Trait *
The different forms of characteristics.
Allele *
The different forms of a trait that a gene might have.
Homozygous*
An organism with 2 alleles for 1 trait that are the same.
Pure Dominant*
The same genetic information for a trait from each parent that is made up of all dominant traits.
Pure Recessive*
The same genetic information for a trait from each parent that is made up of all recessive traits.
Heterozygous *
An organism with 2 different alleles for 1 trait.
Hybrid*
Different genetic information for a trait from each parent that is made up of a combination of a dominant and recessive trait.
Phenotype*
The way an organism looks as a result of its genotype; physical appearance.
Genotype *
The genetic makeup of an organism. It’s the combination of alleles that an organism gets from its parents.
An organism with one dominant and one recessive trait is said to be _______________.
Heterozygous
The physical appearance of an organism is the organisms (1)_____________ and the genetic makeup of an organism is the organisms (2)______________.
1 - Phenotype
2 - Genotype
What is it called when something is probably going to happen?
Probability
If we breed TT with Tt, what is the probability of receiving TT?
50%
What is a distinguishing quality that can be passed from one generation to another?*
Trait
The trait that appears.*
Dominant
If we breed TT with TT, what is the probability of receiving TT?
100%
What was the name of the father of genetics?
Gregor Mendel
If we breed TT with tt, what is the probability of receiving tt?
0%
The trait that recedes into the background.*
Recessive
The genotype Rr means…
Hybrid or Heterozygous
What are the possible genotypes for dominant traits?
TT, Tt