Biology Genetics Graded A+
Trait
Characteristic that is inherited; can be either dominant or recessive.
P Generation
The parent organisms that are bred to make offspring so that scientists can study inheritance; P stands
for "parental."
Brainpower
Read More
F1 generation
The first...
Characteristic that is inherited; can be either dominant or recessive.
P Generation
The parent organisms that are bred to make offspring so that scientists can study inheritance; P stands
for "parental."
Brainpower
Read More
F1 generation
The first offspring born from a parental (P generation) cross.
F2 generation
The offspring resulting from interbreeding (or self-pollination) of the F1 generation.
The Law of Segregation
Mendel's first law, stating that the two alleles in a pair segregate (separate from each other) into
different gametes during gamete formation.
Allele
Any of the alternative versions of a gene that may produce distinguishable phenotypic effects. (For
example, wrinkled seeds or smooth seeds in a pea plant)
, Dominant Allele
An allele that is fully expressed in the phenotype of a heterozygote (for example, the big T in Tt). Only
need 1 copy of dominant allele to show dominant trait.
Recessive Allele
An allele whose phenotype is not expressed in a heterozygote (for example, the little r in Rr) - it is
"masked" or hidden. Need 2 copies of recessive allele to show recessive trait (rr).
Genotype
The genetic makeup, or set of alleles, of an organism. (Ex: PP, Pp or pp)
Phenotype
The EXPRESSED/observable physical and physiological traits of an organism, which are determined by its
genetic makeup.
Punnett Square
A diagram used in the study of inheritance to show the predicted genotypic results of random
fertilization in genetic crosses between individuals of known genotype.
Homozygous
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller bestscores1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.87. You're not tied to anything after your purchase.
