7. In goats, a beard is produced by an autosomal allele that is dominant in males and recessive in females: B? for the beard allele and B? for the beardless allele. Another independently assorting autosomal allele that produces a black coat (W) is dominant to the allele for white coat (w). Give the phenotypes and their expected proportions for the following crosses: a. B? B? Ww male x B? B? Ww female b. B? B? Ww male x B? B? ww female c. B? B? Ww male x B? B? Ww female d. B? B? Ww male x B? B? ww female 8. When a hamster with white spots is crossed with another hamster with no spots, approximately half of the offspring have white spots and half have no spots. When two hamsters with white spots are crossed, 2/3 of the offspring have white spots and 1/3 have no spots. a. What is the genetic basis of whit spotting in hamsters? b. How might you go about producing hamsters that breed true for white spots (always produce spotted offspring)?
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BBbWw male x BBWw female The male has the genotype BBbWw and the female has the genotype BBWw. To determine the phenotypes and their expected proportions, we need to consider the inheritance of both the beard allele (B/b) and the coat color allele (W/w). For the Show more…
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36. In goats, a beard is produced by an autosomal allele that is dominant in males and recessive in females. We'll use the symbol B^b for the beard allele and B^+ for the beardless allele. Another independently assorting autosomal allele that produces a black coat (W) is dominant over the allele for white coat (w). Give the phenotypes and their expected proportions for the following crosses. a. B^+B^b Ww male × B^+B^b Ww female b. B^+B^b Ww male × B^+B^b ww female c. B^+B^+ Ww male × B^bB^b Ww female d. B^+B^b Ww male × B^bB^b ww female
Katlin K.
36. In goats, a beard is produced by an autosomal allele that is dominant in males and recessive in females. We'll use the symbol Bb for the beard allele and B+ for the beardless allele. Another independently assorting autosomal allele that produces a black coat (W) is dominant over the allele for white coat (w). Give the phenotypes and their expected proportions for the following crosses: a. B+Bb Ww male X B+Bb Ww female b. B+Bb Ww male X B+Bb ww female c. B+B+ Ww male X BbBb Ww female d. B+Bb Ww male X BbBb ww female
Sukhwinder N.
In goats, a beard is produced by an autosomal allele that is dominant in males and recessive in females. We'll use the symbol $B^{b}$ for the beard allele and $B^{+}$ for the beardless allele. A nother independently assorting autosomal allele that produces a black coat $(W)$ is dominant over the allele for white coat $(w) .$ Give the phenotypes and their expected proportions for the following crosses. a. $B^{+} B^{5} W w$male $\times B^{+} B^{b}$ Ww female b. $B^{+} B^{5} W w$ male $\times B^{+} B^{b}$ w w female c. $B^{+} B^{+} W w$ male $\times B^{b} B^{b}$ Ww female d. $B^{+} B^{\mathrm{b}} W_{w}$ male $\times B^{\mathrm{b}} B^{\mathrm{b}} w w$ female
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