Question

genetics help anyone??? questions are posted within!

Answer 1

yes whats the question ?

Answer 2

hang on let me pull it up lol

Answer 3

just a quick question are u in connexus

Answer 4

whats that?
and there are three questions that I have = )

Answer 5

The following numbers were obtained for phenotypes from progeny of a test-crossed trihybrid in Drosophila:
phenotype progeny

+m+ 220
w+f 236
++f 168
wm+ 176
+mf 93
w++ 101
+++ 4
wmf 2

a.) what were the genotypes of original true-breeding parental strains used?
b.) Construct a genetic map, show gene order and all map units.
c.) Is there interference?

Answer 6

You started with two parental strains, P1 being NNbbQQhh and P2 nnBBqqHH, you crossed them to make F1s. Then you crossed the F1s with a homozygous recessive tester strain. Out of 10,000 offspring, how many would you expect to have these phenotypes. (Note: only worry about genes listed below to answer each).
a.) NBq
b.) NbQ
c.) NbH

Answer 7

You have discovered a new filamentous fungus that makes ordered tetrads. Unlike Neurospora it stops at just the four meiotic products. Like Neurospora it grows as a haploid only. The spores can be Black (B) or blue (b) and it can grow Fast (F) or slow (f). You mate two strains, dissect the tetrads for analysis and get the following results:

Tetrad class 1 2 3 4 5 6

product
1 Bf Bf BF Bf bF bF
2 bF BF Bf BF bF Bf
3 bF bf bf bF Bf bF
4 Bf bF bF bf Bf Bf
total 9 1 3 2 74 11
tetrad type
MII for b? fill this area with PD, NPD, T, Yes, or No
MII for f?

a.) What were the parental strain phenotypes?
b.) Calculate and map all distances. Show your work.

Answer 8

@imtheothersecret

Answer 9

someone please help. i know how to mainly do them but i need to make sure i'm doing it right

Answer 10

im sorry im late and sorry i cant really help u

Answer 11

its fine i gotta go to speech class anyway

Answer 12

@shrutipande9