MICROM 410 Lecture 23: Lecture 23 Microm 410

The progeny of a Drosophila female (heterozygous at three loci,y+y, ct+ct, w+w) crossed to a wild type male are listed asfollows:

Females y+ ct+ w+ 2000

Males y+ ct+ w 773

y ct w+ 782

y ct+ w+ 201

y+ ct w 209

y+ ct w+ 15

y ct+ w 16

y ct w 3

y+ ct+ w+ 1

What is the gene order and gene arrangement in the trihybridfemale parent?

The progeny of a Drosphila female (heterozygous at three loci,y+y, ct+ct, w+w)

crossed to a wild-type male are listed as follows:

Females y+ ct+ w+ 2000

Males

y+ ct+ w 773

y ct w+ 782

y ct+ w+ 201

y+ ct w 209

y+ ct w+ 15

y ct+ w 16

y ctw 3

y+ ct+ w+ 1

a.) On which chromosome do these genes reside?

b.) What is the gene order and gene arrangement in the trihybridfemale parent?

The formula for an ophthalmic ointment is as follows:

Sulfacetamide Sodium 10% w/w

Prednisolone Acetate 0.2%

w/w Phenylmercuric Acetate 0.0008%

w/w Mineral Oil 1%

w/w White Petrolatum, qs ad 3.5 g

How much of each ingredient would be needed to manufacture 2000 such tubes of ointment?

The answers from the book are

700 g sulfacetamide sodium

14 g prednisolone acetate

56 mg phenyl mercuric acetate

70 g mineral oil

Will you please, show me the steps for the calculation? Thank you!

6215.944 g white petrolatum