maureennjambi19

Construction of an inverter to power a microscope 

A cross is made between homozygous fruit flies that differ for eye color (the st gene) and body color (the e gene). The F1 double heterozygote is shown below using chromosome notation. st+ e / st e+ st = the recessive allele for scarlet eyes; st+ = the dominant wildtype allele for red eyes e = the recessive allele for ebony body; e+ is the dominant wildtype allele for gray body.Are the chromosomes shown in the genotype above in cis or trans configuration? Based on this notation, what were the genotypes and phenotypes of the two parents of the F1?

st+ e / st+ e (parent 1- red eyes, ebony body) x st e+ / st e+ (parent 2-scarlet eyes & gray body)---P1

st+ e st e+ -------------------gametes

st+ e / st e+ (red eyes, gray body)----F1

With what phenotype would you cross this F1 to measure recombination frequency?

How many bones are in our body?

1:  206

2:  390

3:  208