Homework Answers
The punnett square and the ratios of respective genotype and
phenotype are mentioned in the picture below:-
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9. Some (many) traits are polygenic, meaning that multiple genes influence the phenotype. Eye color is...
Fur color in Labrador Retrievers is a Polygenic trait with Epistasis. There are two genes and...
Fur color in Labrador Retrievers is a Polygenic trait with Epistasis. There are two genes and two alleles for each gene: Gene 1: Gene 2: B = Black coat (dominant) T = Add pigment to fur (Dominant) b = Brown coat (recessive) t = No pigment (Recessive) (Yellow) Mate two retrievers with these genotypes: Male BbTt x Female bbTt. From the cross above, what is the probability of having a Brown Labrador Retriever puppy?
1) Coat color in mice is determined by several independently assorting autosomal genes. Gene A is...
1) Coat color in mice is determined by several independently assorting autosomal genes. Gene A is involved in the distribution of pigment along the hair. A dominant allele (A) produces a hair color called "agouti"--the hair has dark pigment at the base and tip of each hair shaft and yellow pigment in the central portion of the shaft. Homozygous recessive mice (aa) are missing the yellow stripe and thus have solid dark-colored hair. Gene B is involved in the color...
tree n elor Grandpa Grandma Dad Shannon (mom) Joseph Annabel Brown eyed male Green eyed male...
tree n elor Grandpa Grandma Dad Shannon (mom) Joseph Annabel Brown eyed male Green eyed male Grandpa Brownieved female Green eyed fernale color blind female Dad Normal female och blind male Nommal male Joseph is grandma is color blind his grandpa and mum are not shat color blind but Joseph and his dad are PUNNETT SQUARE INTERACTIVE Grandma Shannon (Mom) xn Xc Xnx Grandpa SUBMIT Construct the Punnet more info. HOME THEORY MEDIA MISSION Use the following abbreviations: Xc: X...
What are alleles? Genes for different traits, such as hair color and eye color Alternative forms...
What are alleles? Genes for different traits, such as hair color and eye color Alternative forms of a gene for a single trait, such as blue eyes or brown eyes The locations of genes on a chromosome Recessive forms of a kind of characteristic carried by genes Dominant forms of a kind of characteristic carried by genes In order to have the additional information provided by the location of the centromere in chromosomes, the process of karyotyping uses a chemical...
1.Certain characteristics, like coat color in many animals, is influenced by multiple genes. The phenomenon during...
1.Certain characteristics, like coat color in many animals, is influenced by multiple genes. The phenomenon during which the presence of a homozygous recessive genotype at one locus "overrides" or masks the phenotype that would otherwise be produced by the alleles at another locus (regardless of whether they are dominant or recessive) is called: pleiotropy codominance Punnett effect recessive Epistasis 2. Which of the following would be considered a pleiotropic gene? A gene that-along with several others-influences a single phenotype, such...
Uption 4. The inheritance of hair and eye color is very complicated. Scientists have found approximately...
Uption 4. The inheritance of hair and eye color is very complicated. Scientists have found approximately 10-20 genes responsible for determining hair and eye color in humans (sheesh - I thought a dihybrid cross with 2 genes was bad...). Although many genes are involved in producing these phenotypes, it does seem that just a few genes play a major role in determining the color of our hair and eyes. The following is a simplified, but still somewhat realistic view of...
For the purpose of this problem assume that in humans eye color is controlled by a...
For the purpose of this problem assume that in humans eye color is controlled by a single gene and that the allele for brown eyes is dominant to the blue-eye allele. Two brown-eyed parents planning a pregnancy already have a blue-eyed daughter. PLEASE NOTE: gender (being male or female) is a SECOND trait (like a second Punnett square), but no need for a Punnett square because the chance that an offspring will be male or female is always 1/2. Assign...
In sweet peas, two genes (genes A and B) control flower color. The dominant alleles of...
In sweet peas, two genes (genes A and B) control flower color. The dominant alleles of both genes produce enzymes that function in the biochemical pathway shown to convert colorless precursors to a purple pigment. The recessive alleles do not produce enzyme. Therefore, at least one dominant allele of both gene A and gene B are required for purple flowers. Answer the questions about this biochemical pathway. ΑΑ, Αα BB, Bb Enzyme A Enzyme B Colorless precursor 1 Colorless precursor...
Character Traits Allele Hair texture Dominant-curly Recessive-straight H h Eye color Dominant-brown Recessive-blue E e Nose...
Character Traits Allele Hair texture Dominant-curly Recessive-straight H h Eye color Dominant-brown Recessive-blue E e Nose width Dominant-wide Recessive-narrow N n Using the table above, rewrite SueBob’s genotype. Describe Baby SueBob’s phenotype. When SueBob grows up, she starts a family with HenryJane. His genotype is HheeNn. Describe HenryJane’s phenotype. Complete a Punnett square to predict the probabilities of hair texture among their children. HenryJane’s Sperm SueBob’s eggs Complete the dihybrid cross to predict the probability of eye color AND...
You are provided the following recombination frequencies for four traits determined by four genes on one...
You are provided the following recombination frequencies for four traits determined by four genes on one chromosome in corn (Zea mays). Based on this information, organize the genes in a way that represents their arrangement on the chromosome. dotted—yellow seedlings 7.3 mu bronze color—yellow seedlings 25 mu dotted—kernel color 26 mu kernel color—bronze color 4.8 mu dotted—bronze color 31.1 mu (3 pts) You are doing a genetics experiment with fruit flies. In the “P” generation, you cross two true-breeding flies....
tree n elor Grandpa Grandma Dad Shannon (mom) Joseph Annabel Brown eyed male Green eyed male Grandpa Brownieved female Green eyed fernale color blind female Dad Normal female och blind male Nommal male Joseph is grandma is color blind his grandpa and mum are not shat color blind but Joseph and his dad are PUNNETT SQUARE INTERACTIVE Grandma Shannon (Mom) xn Xc Xnx Grandpa SUBMIT Construct the Punnet more info. HOME THEORY MEDIA MISSION Use the following abbreviations: Xc: X...
Uption 4. The inheritance of hair and eye color is very complicated. Scientists have found approximately 10-20 genes responsible for determining hair and eye color in humans (sheesh - I thought a dihybrid cross with 2 genes was bad...). Although many genes are involved in producing these phenotypes, it does seem that just a few genes play a major role in determining the color of our hair and eyes. The following is a simplified, but still somewhat realistic view of...
For the purpose of this problem assume that in humans eye color is controlled by a single gene and that the allele for brown eyes is dominant to the blue-eye allele. Two brown-eyed parents planning a pregnancy already have a blue-eyed daughter. PLEASE NOTE: gender (being male or female) is a SECOND trait (like a second Punnett square), but no need for a Punnett square because the chance that an offspring will be male or female is always 1/2. Assign...
In sweet peas, two genes (genes A and B) control flower color. The dominant alleles of both genes produce enzymes that function in the biochemical pathway shown to convert colorless precursors to a purple pigment. The recessive alleles do not produce enzyme. Therefore, at least one dominant allele of both gene A and gene B are required for purple flowers. Answer the questions about this biochemical pathway. ΑΑ, Αα BB, Bb Enzyme A Enzyme B Colorless precursor 1 Colorless precursor...
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