Download heredity

HEREDITY
HEREDITY
• THE PASSING
ON OF TRAITS
FROM ONE
ORGANISM TO
ITS OFFSPRING
GREGOR MENDEL
• FATHER OF
GENETICS
• STUDIED PEA
PLANTS
TRAITS
CHARACTERISTICS OF A
LIVING THING
GENES
DOMINANT TRAITS
• TRAITS WHICH
ARE EXPRESSED
OR SEEN
RECESSIVE TRAIT
• A TRAIT WHICH
IS NOT SEEN
PUREBRED
• WHEN GENES ARE
THE SAME FOR A
PARTICULAR TRAIT
GENERATION
AFTER
GENERATION
• YY
HYBRID
• GENES
THAT ARE
DIFFERENT
FOR A
TRAIT
• Yy
INCOMPLETE DOMINANCE
• NEITHER
GENE MASKS
THE OTHER
GENETIC PRINCIPLES
• TRAITS OR CHARACTERISTICS, ARE
PASSED ON FROM ONE GENERATION
TO THE NEXT
• THE TRAITS OF AN ORGANISM ARE
CONTROLLED BY GENES
• ORGANISMS INHERIT GENES IN
PAIRS, ONE FROM EACH PARENT
CONTINUED
• SOME GENES ARE DOMINANT,
WHEREAS OTHER GENES ARE
RECESSIVE
• DOMINANT GENES HIDE RECESSIVE
GENES WHEN BOTH ARE INHERITED
• SOME GENES ARE NEITHER
DOMINANT NOR RECESSIVE. THESE
SHOW INCOMPLETE DOMINANCE
PROBABILITY
• USED TO
PREDICT THE
RESULTS OF
GENETIC
CROSSES
PUNNETT SQUARE
• A CHART USED
TO SHOW
POSSIBLE GENE
COMBINATIONS
BETWEEN TWO
ORGANISMS.
PHENOTYPE
• HOW
SOMETHING
ACTUALLY
APPEARS
(HAIR AND
EYE COLOR
GENOTYPE
• THE ACTUAL
GENE MAKEUP
OF AN
ORGANISM.
MUTATION
• WHEN AN
ERROR
OCCURS IN THE
DNA WHEN IT
IS COPIED.
• IT CAUSES
CHANGES
WHICH MAY OR
MAY NOT BE
HARMFUL
GENDER DETERMINATION
XX
• EACH EGG
PRODUCED BY
FEMALES HAS 1 X
CHROMOSOME.
XY
• MALES PRODUCE
SPERM WHICH
WILL HAVE EITHER
AN X OR Y
CHROMOSOME.
SEX-LINKED DISORDERS
• A SEX LINKED
GENE IS AN
ALLELE ON A SEX
CHROMOSOME
WHICH CREATES
A CONDITION.
QUESTIONS????????