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Pigs can be solid colored or half colored (the anterior half may be white). A solid colored pig was crossed to a half-colored pig and the litter consisted entirely of solid-colored piglets. The F1 offspring were used in the following crosses. F1 solid X P solid produced all solid offspring F1 solid X F1 solid produced 7 solid and 2 half-color F1 solid X P half-colored produced 3 solid and 4 half-colored. a. Which phenotype is dominant and which is recessive? b. Assigning B to the dominant allele and b to the recessive allele, what are the genotypes of the original parents? c. What genotypes occur in the progeny of cross 2? d. What are the genotypes of the solid-colored progeny of cross 3? e. What proportion of the eggs of an F1 female will carry the gene for half color?
Explain what a new mom can expect to happen about the return of the menstrual cycle. Can breastfeeding be used as a method of birth control?
Explain "mutation-selection balance." b) Discuss the relationship between the fitness of a deleterious recessive allele, the mutation rate of the allele, and the equilibrium frequency of that allele. Be sure to address the extreme when the allele ..
What kinds of mechanisms tend to isolate populations enough to promote genetic divergence?
write a 3-4 page paper in which you1. identify and describe three reasons there may be a physician shortage rather than
an asthma patient receives a perscription for theophylline. how would you expect thi sdrug to affect cellular responses to hormones that activate adenylate cyclase? Why?
Which of the following characteristics of transcription initiation by 70-containing polymerase holoenzymes is different than for ?54-containing polymerase holoenzymes?
compare and contrast the life cylces of bryophytes , seedless vascular plants and gymnosperms . How do any of the differences you mention affect the relative success of these different groups in dry environments ?
gene A controls the sharpness of spines in a type of cactus. cactuses with the dominant allele, A, have sharp spines, whereas homozygous recessive aa cactuses have dull spines. at the same time, a second gene, N, determines whether cactuses have s..
If you wanted to make a 0.5M solution of MgSO4, how many grams of MgSO4 would you need? Assume the volume of the solution is one liter. Show your work.
What type of cross would produce the following genetic ratios? Write the genotypes that would lead to these ratios.
The human vasoactive intestinal polypeptide (or VIP) contains 29 amino acid.
find examples of countries for each population growth model (rapid, slow, zero). Use examples other than the ones described in the text or the lecture. What evidence can you find to support your choices?
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