Shared Flashcard Set

Details

Genetics
c,sinks
13
Science
7th Grade
02/10/2010

Additional Science Flashcards

 


 

Cards

Term
alleles
Definition
The different forms of gene. Y and y are different alleles of the gene that determines seed color.
Term
dominant trait
Definition
a trait expressed preferentially over another trait.
Term
f1 generation
Definition
offspring of a cross between true breeding plants,homozygous for the trait of interest.
Term
f2 generation
Definition
offspring of a cross involving the f1 generation.
Term
genotype
Definition
the genetic constitution of an organism with respect to a trait.Yellowseeds are dominant but yellow seeded plants have a genotype of either YY or Yy.
Term
heterozygous
Definition
different alleles for a trait in an individual sucj as Yy.
Term
homozygous
Definition
both alleles for a trait are the same in an inividual.they cna be homozygous dominant "YY" or homozygous recessive"yy".
Term
hybrid
Definition
heterzygous:usually fefering to the offspring of two true breeding individuals different in the traits of interest.
Term
monohybrid cross
Definition
cross involving parents differing in only one trait.
Term
mutation
Definition
change in the DNA sequence of a gene to some new heritable form.generally but now always a recessive allele.
Term
phenotype
Definition
the physical appearance of an organism with respect to a trait.
Term
recessive trait
Definition
the opposite of dominant.A trait that is preferentially masked.
Term
sex-linked
Definition
a gene coded on a sex chromosome such as the X-chromosome linked genes of flies and man
Supporting users have an ad free experience!