wednesday 2/12/14 groups that have not yet presented need to be ready to present when the bell rings
DESCRIPTION
#2 In rabbits, black color is due to the dominant gene B and brown color is due to its recessive allele b. Short hair is due to the dominant gene S and long hair to its recessive allele s. In a cross between a heterozygous black, heterozygous short-hair male and a homozygous brown long-hair female, what are the possible genotypes and what is the ratio of phenotypes?TRANSCRIPT
Wednesday 2/12/14
• Groups that have not yet presented need to be ready to present when the bell rings.
Review #1
• In Dodo birds the allele for being dumb is dominant to the allele for being smart. What would be the offspring of a homozygous recessive Dodo with a heterozygous Dodo?
#2
• In rabbits, black color is due to the dominant gene B and brown color is due to its recessive allele b. Short hair is due to the dominant gene S and long hair to its recessive allele s. In a cross between a heterozygous black, heterozygous short-hair male and a homozygous brown long-hair female, what are the possible genotypes and what is the ratio of phenotypes?
#3
• Suppose that you are an explorer who has found a new species of plant. Some of the plants have red flowers and some have yellow flowers. You cross a red-flowered plant with a yellow-flowered plant and all the offspring have orange flowers. What is the most probable explanation?
#4
• Gorilla body cells have 48 chromosomes. What is the diploid number for gorillas?
#5
• BABY GIRAFFES GET 31 CHROMOSOMES FROM EACH PARENT. WHAT IS THE HAPLOID NUMBER IN GIRAFFES?
#6
• MENDEL CALLED THESE THINGS FACTORS. WE NOW KNOW THEY CARRY OUR CHARACTERISTICS AND INHERITANCE
#7
• GENES OFTEN HAVE MORE THAN ONE FORM. WHAT DO WE CALL THESE DIFFERENT FORMS?
#8
• ONLY A COMBINATION BETWEEN THESE TWO TYPES OF ORGANISMS WILL RESULT IN A GENOTYPIC RATIO OF:1:2:1
#9
• A DIHYBRID CROSS BETWEEN TWO PARENTS HETEROZYGOUS FOR BOTH TRAITS WILL RESULT IN WHAT PHENOTYPIC RATIO?
#10
• A CROSS RESULTED IN 50% RED FLOWERS, AND 50% RED AND WHITE SPOTTED FLOWERS. WHAT IS THE INHERITANCE PATTERN?
#11
• THE HOMOLOGOUS CHROMOSOMES PAIR UP DURING THIS PHASE OF MEIOSIS.
#12
• A woman with heterozygous A blood is crossed with a man who has heterozygous B blood. What are the blood types the children could be?
#13
• What is the probability of rolling a 1 or a 3 on a six sided dice twice in a row?
#14
• What is the karyotype for a normal male?
#15
• When does the “coinflip” happen?
#16
• Hemophilia is a sex linked trait. A woman who is normal and not a carrier is crossed with a male who has hemophilia. What are the possible genotypes and phenotypes of their offspring?
#17
• The likelihood two genes will be separated by crossing over is related to what?
Review #1
• In Dodo birds the allele for being dumb is dominant to the allele for being smart. What would be the offspring of a homozygous recessive Dodo with a heterozygous Dodo?
• 50% dumb 50% smart
#2
• In rabbits, black color is due to the dominant gene B and brown color is due to its recessive allele b. Short hair is due to the dominant gene S and long hair to its recessive allele s. In a cross between a heterozygous black, heterozygous short-hair male and a homozygous brown long-hair female, what are the possible genotypes and what is the ratio of phenotypes?
#3
• Suppose that you are an explorer who has found a new species of plant. Some of the plants have red flowers and some have yellow flowers. You cross a red-flowered plant with a yellow-flowered plant and all the offspring have orange flowers. What is the most probable explanation?
#4
• Gorilla body cells have 48 chromosomes. What is the diploid number for gorillas?
• 48
#5
• BABY GIRAFFES GET 31 CHROMOSOMES FROM EACH PARENT. WHAT IS THE HAPLOID NUMBER IN GIRAFFES?
• 31
#6
• MENDEL CALLED THESE THINGS FACTORS. WE NOW KNOW THEY CARRY OUR CHARACTERISTICS AND INHERITANCE
• Genes
#7
• GENES OFTEN HAVE MORE THAN ONE FORM. WHAT DO WE CALL THESE DIFFERENT FORMS?
• Alleles
#8
• ONLY A COMBINATION BETWEEN THESE TWO TYPES OF ORGANISMS WILL RESULT IN A GENOTYPIC RATIO OF:1:2:1
• 2 heterozygous organisms
#9
• A DIHYBRID CROSS BETWEEN TWO PARENTS HETEROZYGOUS FOR BOTH TRAITS WILL RESULT IN WHAT PHENOTYPIC RATIO?
• 9:3:3:1
#10
• A CROSS RESULTED IN 50% RED FLOWERS, AND 50% RED AND WHITE SPOTTED FLOWERS. WHAT IS THE INHERITANCE PATTERN?
• Codominance
#11
• THE HOMOLOGOUS CHROMOSOMES PAIR UP DURING THIS PHASE OF MEIOSIS.
• Prophase I
#12
• A woman with heterozygous A blood is crossed with a man who has heterozygous B blood. What are the blood types the children could be?
• AB, A heterozygous, B heterozygous, O blood
#13
• What is the probability of rolling a 1 or a 3 on a six sided dice twice in a row?
• 1/9
#14
• What is the karyotype for a normal male?
• 46 XY
#15
• When does the “coinflip” happen?
• Metaphase I
#16
• Hemophilia is a sex linked trait. A woman who is normal and not a carrier is crossed with a male who has hemophilia. What are the possible genotypes and phenotypes of their offspring?
• XBXb XBXb XBY
#17
• The likelihood two genes will be separated by crossing over is related to what?
• How far away the genes are on the chromosomes.