Question

In the model plant Arabidopsis thaliana, the following genes/alleles were used in a cross: T = presence of trichomes t = absence of trichomes D = tall plants d = dwarf plants W = waxy cuticle w = nonwaxy A = presence of purple pigment a = absence of purple pigment (white) The T and D genes are 26 CM apart on one chromosome, whereas W and A are 8 CM apart on a different chromosome. A pure-breeding plant that is trichomeless, tall, non-waxy, and purple plant is crossed with another pure-breeding plant that is trichomed, dwarf, waxy, and white. The resulting F1 is testcrossed, what proportion of the progeny will have all 4 recessive phenotypes?

          In the model plant Arabidopsis thaliana, the following genes/alleles were used in a cross:
T = presence of trichomes		t = absence of trichomes
D = tall plants		d = dwarf plants
W = waxy cuticle		w = nonwaxy
A = presence of purple pigment		a = absence of purple pigment (white)
The T and D genes are 26 CM apart on one chromosome, whereas W and A are 8 CM apart on a different
chromosome. A pure-breeding plant that is trichomeless, tall, non-waxy, and purple plant is crossed with another
pure-breeding plant that is trichomed, dwarf, waxy, and white. The resulting F1 is testcrossed, what proportion of
the progeny will have all 4 recessive phenotypes?

In the model plant Arabidopsis thaliana, the following genes/alleles were used in a cross:
T = presence of trichomes t = absence of trichomes
D = tall plants d = dwarf plants
W = waxy cuticle w = nonwaxy
A = presence of purple pigment a = absence of purple pigment (white)
The T and D genes are 26 CM apart on one chromosome, whereas W and A are 8 CM apart on a different
chromosome. A pure-breeding plant that is trichomeless, tall, non-waxy, and purple plant is crossed with another
pure-breeding plant that is trichomed, dwarf, waxy, and white. The resulting F1 is testcrossed, what proportion of
the progeny will have all 4 recessive phenotypes?

Added by Nerea M.

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