Homework Answers
5)Male tortoiseshell cats are very rarely found and are usually sterile.These cats undergo a phenomenon called X-inactivation.Due to which X- chromosomes is turned off randomly in each cell during the early stages of development.The primary gene for coat color B for c cinnamon,brown can be masked by co-dominant genes for orange color ehich is on X chromosome and has alleles for orange and not orange.Thus due to X inactivation different colors and patches are observed.
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would you test if the genes for body color (B dominant over b) and
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In cats with tortoiseshell coat color, the fur is white with patchy black and orange spots....
In cats with tortoiseshell coat color, the fur is white with patchy black and orange spots. In cats, the tortoiseshell gene is on the X chromosome, and the tortoiseshell phenotype requires the presence of 2 different alleles at this locus: one for orange fur (o) and one for black fur (b). What phenomenon best explains why female cats can inherit tortoiseshell coat color? In females, the alleles for coat color are pleiotropic, resulting in patches of orange and black coat...
vields black aegene is r-quired to produce orange cas fur the recesstvo little o orange fur...
vields black aegene is r-quired to produce orange cas fur the recesstvo little o orange fur altemating with patterns of is allele of O allele of the X-linked orange wah gene yields black fur. Tortoisesheil cats have coats with patches of hich of the following terns of black fur 3. ) ange female oroses could produce a XX fama ortoise B. Black female x orange C. Orange female x o ange D. Two of the above couloace a female E....
In Drosophila, b+ is the allele for normal body color and at the same gene b...
In Drosophila, b+ is the allele for normal body color and at the same gene b is the allele for black body color. A second gene controls wing shape. The shape can be either normal (vg+) or vestigial (vg). A cross is made between a homozygous wild type fly and fly with black body and vestigial wings. The offspring were then mated to black body, vestigial winged flies. The following segregation ratio was observed: Phenotype # Observed Wild Type (normal,...
You must record all crosses and results on the log sheets provided in this lab. Your...
You must record all crosses and results on the log sheets provided in this lab. Your completed log sheets must be attached to your final report as an Appendix. PART IV: POST-LAB. These following exercises must be completed in your labreport: 1. Length of fur is also genetically determined. The allele L produces long fur and its corresponding allele, I produces short fur. Long fur is dominant to short. a) You mate 2 hamsters. Both heterozygous for brown long fur....
16. So far we have been dealing with alleles found on autosomal chromosomes. These chromosomes contain...
16. So far we have been dealing with alleles found on autosomal chromosomes. These chromosomes contain all the genetic information that is not gender related. As a human, you have 44 autosomal chromosomes (22 pairs → 11 chromosomes from your Mom and 11 chromosomes from your Dad). You also contain a pair of sex chromosomes. These chromosomes contain all the genetic information related to your gender. If you are female, you received an X chromosome from your Mom and an...
(Problem 66a) Male house cats are either black or orange; females are black, orange, or calico....
(Problem 66a) Male house cats are either black or orange; females are black, orange, or calico. If these coat-color phenotypes are governed by a sex-linked gene, how can these observations be explained? A.The gene is on the X chromosome and three alleles must be involved. B.Calico males die before birth C.In males, orange is always dominant over calico. D. The gene is on the X chromosome and heterozygous females display the calico phenotype. . E.Calico males are sterile. (Problem 66...
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?
True or False: Sex chromosomes in mammals Indicate whether each of the following statements about sex...
True or False:
Sex chromosomes in mammals Indicate whether each of the following statements about sex chromosomes in mammals is true or false. 01. Dosage compensation involves inactivation of the Y chromosome in males in order to equalize gene expression between the sexes.(Click to select) 02. One of the X chromosomes in each cell of a female is inactivated early in embryonic development, before the embryo's sex is determined. (Click to select) 03. In a female, the same X chromosome...
In beetles, a gene coding for body color and a gene coding for bristle length are...
In beetles, a gene coding for body color and a gene coding for bristle length are located on the same chromosome. Black (B) is dominant over grey body (b) and long bristles (s) are recessive to short bristles (S). A beetle that is heterozygous for black body and short bristles is mated with one that has a grey body and long bristles. What are the genotypes of the parents? ____________ ____________ Assume that the B allele is linked with the...
In Drosophila, genes a and b control body size and color, respectively. Large body (a+) is...
In Drosophila, genes a and b control body size and color, respectively. Large body (a+) is dominant over miniature (a), and gray body (b+) is dominant over ebony (b). The two genes are located at positions 32.0 and 40.0 on a particular autosome. Note that crossing-over does not occur in males. A miniature female that is homozygous for b+ was mated with an ebony male that is homozygous for a+. All the offspring were phenotypically wild-type (large body and gray).....
vields black aegene is r-quired to produce orange cas fur the recesstvo little o orange fur altemating with patterns of is allele of O allele of the X-linked orange wah gene yields black fur. Tortoisesheil cats have coats with patches of hich of the following terns of black fur 3. ) ange female oroses could produce a XX fama ortoise B. Black female x orange C. Orange female x o ange D. Two of the above couloace a female E....
In Drosophila, b+ is the allele for normal body color and at the same gene b is the allele for black body color. A second gene controls wing shape. The shape can be either normal (vg+) or vestigial (vg). A cross is made between a homozygous wild type fly and fly with black body and vestigial wings. The offspring were then mated to black body, vestigial winged flies. The following segregation ratio was observed: Phenotype # Observed Wild Type (normal,...
You must record all crosses and results on the log sheets provided in this lab. Your completed log sheets must be attached to your final report as an Appendix. PART IV: POST-LAB. These following exercises must be completed in your labreport: 1. Length of fur is also genetically determined. The allele L produces long fur and its corresponding allele, I produces short fur. Long fur is dominant to short. a) You mate 2 hamsters. Both heterozygous for brown long fur....
16. So far we have been dealing with alleles found on autosomal chromosomes. These chromosomes contain all the genetic information that is not gender related. As a human, you have 44 autosomal chromosomes (22 pairs → 11 chromosomes from your Mom and 11 chromosomes from your Dad). You also contain a pair of sex chromosomes. These chromosomes contain all the genetic information related to your gender. If you are female, you received an X chromosome from your Mom and an...
True or False:
Sex chromosomes in mammals Indicate whether each of the following statements about sex chromosomes in mammals is true or false. 01. Dosage compensation involves inactivation of the Y chromosome in males in order to equalize gene expression between the sexes.(Click to select) 02. One of the X chromosomes in each cell of a female is inactivated early in embryonic development, before the embryo's sex is determined. (Click to select) 03. In a female, the same X chromosome...
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