Can anyone work out number 13? I know the answer but I don\'t know how to do it.
ID: 49343 • Letter: C
Question
Can anyone work out number 13? I know the answer but I don't know how to do it. will give points to the person who actually show how to do it :)
13. Britle endospem (b)i glossy leaf andosperm and glossy leat are both on chromosome 8 and mp 8 o map units apat Red aeoe is for britse and red is different chromosome and is unlined to b or g A strain of com rat is homotygous arossed to a strain that is homarygous for glossy leat The F1 were entirely wid-aype An F1 indviduai was the offspring are expected to be brite, glossy and red a 21.5 b. 200 c 230 d21.0 43.0 14. How many of the offispring will be ritle and red but not glossy? a 350 b. 230 d. 200 75 15 Vestigial wings and ebony body are autosomal recessive lodi on different chromosome pairs (nat linked A laboratory strain that is both vestigial and ebony is crossed to a wild-type fly caught near Bikini Island The s n the South Pacific used for testing the H-bomb) The F1 maies from this cross are test crossed to a homozygous vestigial ebony female. Among 1000 progeny. 516 were phenotypicelly wild-type and 484 were vestigial and ebony No other phenotypes were observed. What sort of chromosomal reartrangement could cause these unusual resuts. (Remember that male Drosophila do not cross over) a a pericentric inversionb a reciprocal translocation a paracentric inversionExplanation / Answer
Q no 13
Homozygous Brittle –bb
Homozygous Red – prpr
Homozygous Glossy-gg
gg X prpr bb = ggbb ggprpr (wild type)
gametes – gb gpr
gg bb prpr
gb gbgg gbbb gbprpr
gpr gprgg gprbb gprprpr
Homozygous Brittle – 2 out of 6
Homozygous Red – 2 out of 6
Homozygous Glossy-2 out of 6
Out of 1000 offspring - 20 is expected to be brittle
Out of 1000 offspring - 20 is expected to be red
Out of 1000 offspring - 20 is expected to be glossy