21.32 Genetics of plant variegation. Arabidopsis thaliana is a green-leafed plant, but a variegated type has green-and-yellow leaves. To investigate the mechanism
of plant variegation, researchers created, in the DNA offihe variegated Arabidop-
sis, a recessive mutation that suppresses variegation. 12 When the green mutants were
crossed with the variegated types, the first-generation plants were all variegated, confirm-
ing the recessive aspect of the mutation. In the second generation (F2), the researchers ob-
tained 84 green plants and 216 variegated plants. Are these data consistent with a single
recessive mutation for which we would expect a 3:1 ratio in F22 Follow the four-step
process.

In a hypothetical breed of dogs, coat color is controlled by two genes. there are six different coat colors in this breed: black, brown, cream, gray, silver, and tan. consider the following crosses.cross 1: black females from a lineage of all black dogs are crossed with brown males from a lineage of all brown dogs. f1 males and females are all black. when f1 are intercrossed, f2 males and females are black or brown.cross 2: black females from a lineage of all black dogs are crossed with tan males from a lineage where all males are tan and all females are cream. f1 males are black, f1 females are gray. when f1 are intercrossed, f2 males and females are black, brown, gray, or tan.cross 3: silver females from a lineage where all females are silver and all males are gray are crossed with brown males from a lineage of all brown dogs. f1 males and females are all gray. when f1 are intercrossed, f2 males are black, brown, gray, or tan, f2 females are cream, gray, silver, or tan.select the correct statements regarding the mode of inheritance of the coat color genes.a) both genes are x-linked.b) both genes are autosomal.c) one of the genes modifies the expression of the other gene.d) each gene has an additive effect on the intensity of coat color.e) each gene independently specifies three colors.f) one of the genes is autosomal, and the other is x-linked.

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism

Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm