Download chapter # 7 > genetics of organisms

SOUTHWESTERN CHRISTIAN SCHOOL
LIFE SCIENCE
STUDY GUIDE # 7 - GENETICS OF ORGANISMS
LEARNING OBJECTIVES
1. STUDENTS WILL BE ABLE TO IDENTIFY AND EXPLAIN HOW GENETIC
TRAITS ARE PASSED FROM ONE GENERATION TO ANOTHER
2. STUDENTS WILL BE ABLE TO IDENTIFY AND EXPLAIN HOW THE MOST
PROMINENT VARIATIONS IN THE TRANSMISSION OF GENETIC TRAITS
OCCUR
“ GENETICS ” –
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SHORT SUBJECT VIDEO > GREGOR MENDEL
1.
WHEN WE ARE CONCEIVED WE INHERIT THE GENETIC
CHARACTERISTICS OF OUR ______________________
2.
MENDEL CONDUCTED EXPERIMENTS WITH GARDEN __________________
3.
WHAT MENDEL OBSERVED THROUGH HIS EXPERIMENTS WERE THE
BIOLOGICAL PHENOMENA OF _________________ AND SEGREGATION
4.
MENDEL PROVED THAT HE COULD DEMONSTRATE THAT THE TRAITS
OF SUCCESSIVE GENERATIONS WERE INHERITED IN CERTAIN
________________________
______________
5.
MENDEL’S FACTORS ARE NOW CALLED ____________________
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KEY CONCEPTS AND THEORIES IN MENDEL’S WORK :
1.
“ PUREBRED ” -
2.
“ TRAIT ” -
1.
2.
3.
3.
“ CROSSBREEDING ” -
1.
2.
3.
“ HYBRIDS ” –
4.
NOTE !! MENDEL USED UPPER CASE LETTERS TO LABEL DOMINANT
TRAITS AND THE DOMINANT IS ALWAYS LISTED FIRST
4.
5.
“ PHENOTYPE ” –
6.
“ GENOTYPE ” -
“ PUNNETT SQUARE ” -
WHAT HAPPENS WITH THE TRAITS IN SECOND
GENERATIONS ( F ² ) WHEN HYBRIDS ARE BRED ?
WHAT ARE THE PERCENTAGES OF
CERTAIN TRAITS SHOWING UP ?
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SHORT SUBJECT VIDEO > PUNNETT SQUARES
1.
2.
MENDEL’S RULES OF HEREDITY :
1.
INDIVIDUALS CARRY _________ FACTORS ( GENES ) FOR EACH
TRAIT , BUT PASS DOWN ONLY _____________
2.
ONE FACTOR ( GENE ) IS ____________________ OVER THE OTHER
“ DOMINANT ” TRAIT MEANS THAT IT HAS MORE ______________________
OVER THE OTHER
3.
“ RECESSIVE ” MEANS THAT THE TRAIT IS _____________________
4.
GENES RECEIVED BY OFFSPRING ARE LEFT UP TO ____________________
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VARIATIONS IN MENDEL’S THEORIES :
1.
“ INCOMPLETE DOMINANCE ” -
2.
“ CO-DOMINANCE ” –
1.
2.
3.
“ MULTIPLE GENE INHERITANCE ” -
CONCEPTS IN HUMAN INHERITANCE :
SEX DETERMINATION > 3 FACTS :
1.
1.
2.
2.
3.
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SHORT SUBJECT VIDEO > SEX CHROMOSOMES
1.
OUT OF THE 23 PAIRS OF CHROMOSOMES HUMANS HAVE , __________
PAIR ARE SEX CHROMOSOMES
2.
MALES HAVE A PAIR OF ______ AND _______ CHROMOSOMES
3.
FEMALES HAVE A PAIR OF __________ AND __________ CHROMOSOMES
4.
THERE IS A ________________ CHANCE OF BEING ONE SEX OR ANOTHER
SEX LINKED TRAITS > 2 FACTS :
1.
2.
1.
3.
2.
4.
“ SEX LINKED TRAIT ” -
1.
2.
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FACETS OF GENETICS > LEARNING ABOUT THE UNBORN - PAGE # 100
BRIEFLY DESCRIBE THE “ AMNIOCENTESIS ” PROCEUDRE :
NAME TWO THINGS THAT CAN BE LEARNED FROM THE AMNIOCENTESIS
PROCEDURE :
1.
2.
BRIEFLY DESCRIBE THE “ FETOSCOPE ” PROCEDURE :
NAME TWO THINGS CAN THE FETOSCOPE BE USED TO DETERMINE :
1.
2.
BRIEFLY DESCRIBE THE “ ULTRASOUND ” PROCEDURE :
NAME TWO THINGS THAT THE ULTRASOUND PROCEDURE IS USED FOR :
1.
2.
BRIEFLY EXPLAIN HOW THESE MEDICAL PROCEDURES CAN BE MISUSED