In sweet pea plants, an allele for purple flowers (P) is dominant to an allele for red flowers (p). Additionally, an allele for long pollen grains (L) i dominant over an allele for short plan grains (l). Geneticist crossed plants that were heterozygous for both traits (PpLl X PpLl). What is the probability of producing plants with purple flowers and short pollen grains? 3/16 3/16 9/16 9/16 1/2 1/2 1/16

P(purple, short) = 3/16

Explanation:

Purple flowers require genotypes Pp, pP or PP

Short pollen grains require genotype ll

The genotypes are

PPll (1/16), Ppll (1/16), pPll (1/16) for a total of 3/16

b brown mice / white sand dunes

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.