In the datura plant, purple flower color is controlled by a dominant allele p. white flowers are found in plants homozygous for the recessive allele p. suppose that a purple-flowered datura plant with an unknown genotype is self-fertilized and that its progeny are 28 purple-flowered plants and 10 white-flowered plants. use the results of the self-fertilization to determine the genotype of the original purple-flowered plant. if one of the purple-flowered progeny plants is selected at random and self-fertilized, what is the probability it will breed true

Explanation:

The genotypes PP and Pp determine purple flowers while pp determines white flowers.

A purple-flowered P_ (PP or Pp) plant is self-fertilized and it produces the progeny:

The only way to obtain plants with white flower in the progeny is if both parental plants have a recessive p allele, so the genotype of the original purple-flowered plant is Pp.

The original cross then was Pp x Pp. The expected offspring (from Punnett Square) is 1/4 PP, 1/2 Pp and 1/4 pp. If we only consider the purple-flowered offspring, the proportion of genotypes is 1/3 PP and 2/3 Pp. To breed true, the individuals must produce only homozygous progeny. Only the PP individuals will breed true, so the probability is 1/3.

condensation. good luck!

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus