When Lucifer yellow, a small dye, is injected into a neuron of the retina, neighboring neurons become rapidly labeled. If the retina is incubated in dopamine prior to Lucifer yellow injection, only the injected neuron becomes labeled. These findings suggest which of the following?

I. Neurons of the retina communicate via gap junctions.

II. Dopamine is transferred between cells via gap junctions.

III. Dopamine decreases the permeability of gap junctions.

#Question id: 3521

#Unit 8. Inheritance Biology

Which of the following is incorrect about independent assortment?

#Question id: 3522

#Unit 8. Inheritance Biology

A haplo-diplod insect, Male are haploid but female are diploid, A female who is heterozygous for recessive red eye color mutation mate with red eye male. What will be percent of wild phenotype color eye among their female?

#Question id: 3523

#Unit 8. Inheritance Biology

If the number of heterozygous pairs involved in a particular cross is three, the phenotype ratio obtained in their F2 generation will be-

#Question id: 3524

#Unit 8. Inheritance Biology

Which of the following genotypes would produce the greatest variety of gametes of the alleles assorted independently?

#Question id: 3525

#Unit 8. Inheritance Biology

In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t). If a plant with RRTt genotype was crossed with rrtt plant results progeny, are

#Question id: 3526

#Unit 8. Inheritance Biology

In garden peas, the allele for tall plants (D) is completely dominant to the allele for dwarf plants (d) and the allele for violet flower color (W) is completely dominant to the allele for white flower color (w). In a cross between a tall violet plant, with the genotype DDWw, and a dwarf white plant, what phenotypic ratio of the progeny would be expected from this cross?