The answer is second one. 12:3:1 epistatis, A_B_ and A_bb: Black,; aaB_ : Brown and aabb : Green
For explanation find the below image
The observed values are almost fit to 12:3:1 ratio.
It is an example for dominant epistatic gene interaction.
In Dominant eptistatic interaction one gene expressess her
character even in the presence of dominant allele. But the second
gene can express her character only in the absence of dominant
allele of first gene.
Part A The wild-type color of horned beetles is black, although other colors are known. A...
1A) Two autosomal genes control horn color in dragons. Pure-breeding gold-horned dragons were mated to pure-breeding silver-horned dragons. All of the F1 were gold. The F1 were intermated and the F2 generation consisted of 148 gold, 17 silver and 96 bronze. Choose the genetically based phenotypic ratio that should be hypothesized to explain the F2 data. Select one: 9:3:3:1 9:3:4 12:3:1 9:7 15:1 9:6:1 13:3 B)Conduct a chi-square test to test the appropriate type of epistasis. In the chi-square test,...
In rabbits, spotted coat (S) is dominant to solid color (s) and black (B) is dominant to brown (b). A true-breeding black spotted rabbit is mated to a true-breeding brown solid rabbit to Iproduce a heterozygous F1 generation. Two F1 individuals are mated. You see the four expected phenotypes of offspring, but not in the expected 9:3:3:1 (black spotted: black solid: brown spotted: brown solid) ratio. This tells you that o that the genes for fur pattern (spotted vs. non-spotted)...
1. At least 3 independently assorting loci are known to govern coat color in mice. The genotype C- will allow pigment to be produced by 2 other genes. The cc genotype does not allow pigment production resulting in albino mice. The striped “agouti” hair pattern depends on the genotype A- and the aa genotype is nonagouti. Finally, the color of the pigment may be black (B-) or brown (bb). Five different coat colors may be produced by the action of...
In rats, several independently assorting autosomal genes affect coat color. Gene A controls the distribution of yellow pigment in hair, and gene B causes black pigmentation. The two genes interact as follows: A–B– (gray), A–bb (yellow), aaB– (black), and aabb (cream). These genotypes are only expressed in the presence of the dominant allele of a third gene, C; rats with genotype cc are albino. a. Deduce the genotype of each albino mice, to the extent that is possible, in the...
The snapdragon flower in Tennessee and Alabama are both white. When these two strains of snapdragon were crossed, the resulting F1 produces purple-color flower. When the F1 was self-crossed, the F2 progeny were 540 purple and 420 white. 16. What kind of inheritance pattern is this? A. recessive epistasis B. complete dominance C. dominant epistasis D. codominance E. complementation 17. What is the genotype of the F1 progeny? (let’s assume two involved genes are BB and DD) A. BBdd B....
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...
Question 2b) You are studying a flowering plant that produces remarkable bright green flowers in its wild type. Your colleagues have discovered two new mutant lines of this plant. One new line breeds true for a yellow flower color. Another new line breeds true for a blue flower color. Your group does the following crosses and makes these observations: yellow X green ⇒ F1 is all green ⇒ F2 75% green and 25% yellow blue X green ⇒ F1 is...
(blue and red of the wild type pathways shown 5.(9.5 points) Hagrid has introduced a new course at Hogwarts: Genetics of a Through their experiments, the fifth years have discovered that flobberw in years have discovered that flobberworms are normally purple, with pigmentation controlled by mixing the end products (blue and red of the wild type below). Through genetic experiments, they've discovered that the step su genetic experiments, they've discovered that the steps of the pathways are controlled by 3...
In early 20th century, the inheritance pattern of two fly mutants (eye color, w+ or w; body color, y+ or y) was used for discovering genetic linkage and crossing-over. Answer the following questions. P w+,y+/w+,y+ x w,y/Y F1 w+,y+/w,y x w+y+/Y F2 w+,y+/Y (Category 1) w,y/Y (Category 2) w+,y/Y (Category 3) w,y+/Y (Category 4) 6. Let’s assume you used the following breeding scheme at the P stage and repeated the entire experiments. Which is INCORRECT regarding...
You cross two crows, one with yellow legs, and the other with green legs. All of the F1 offspring have purple legs. Leg pigment is produced by the pathway in Fig.3, where the dominant alleles (Y and G) produce functional versions of enzymes Y and G, and the recessive alleles (y and g) produce nonfunctional enzymes. What genotype frequencies do you expect to see in the F2 generation? O all purple 9 green: 3 purple: 3 yellow 9 purple: 3...