New combination of genotypes

    Cards (13)

    • What are pure breeding pants ?

      Plants containing the same two alleles on each of the homologous chromosomes (tt or TT)
    • What is a monohybrid cross?

      study of a cross between individuals which studies only a single trait (Yellow and Green)
    • First generation flowers all show the dominant allele/characteristic (yellow)
    • Second generation of flowers shows 3:1 ratio (3 yellow offspring to 1 green)
    • What is sex linkage?

      the genes that are located on the sex chromosomes
    • what is Sex-linked inheritance ?

      when an organism has one pair of sex chromosome, with males having XY and females XX
    • Humans contain 22 pairs of autosomal (non sex) cells and 1 pair of sex chromosomes which determine the gender
    • If a female has a recessive sex link trait = 100% of her male offspring will have the trait.
    • Female offspring  WILL inherit the allele linked to their father
    • What is codominance?

      occurs when alleles of a gene pair in heterozygous are both fully expressed in the phenotype (neither allele is dominant or reccessive). each allele is represented by a CAPTITAL LETTER
    • What is an example of codominance ?

      Seen in cows. If a red and a white cow mate they will create a third phenotype which is white with red spots
    • what is Incomplete dominance ?

      occurs when one allele for a specific trait is not completely expressed over its paired allele. The phenotypes of parents blend together fir form a new one. Each allele is expressed as a capital letter
    • What is an example of incomplete dominance ?

      snap dragon flowers, if a parent flower is red mates with a parents flower that is white then their children's flowers will be pink as neither parent was able to express all of their genes