#Question id: 3510
#SCPH01 Biochemistry
Assume that the trihybrid cross AA BB RR X aa bb rr is made in a plant species in. What proportion of F2 progeny would be expected to be homozygous for all three genes when independently assort?
#Question id: 4314
#SCPH06 I Botany
A researcher introduces double-stranded RNA into a culture of mammalian cells and can identify its location or that of its smaller subsections experimentally, using a fluorescent probe. Some time later, she finds that the introduced strand separates into single-stranded RNAs, one of which is degraded. What does this enable the remaining strand to do?
#Question id: 1633
#SCPH01 Biochemistry
Immunological memory can be transferred experimentally by:
#Question id: 2307
#I Life Science/ Life Sciences Group – I-V
Bacteria that have cell walls with thick layers of peptidoglycan are:
#Question id: 4826
#SCPH12 I Genetics
In Drosophila melanogaster, vestigial wings are determined by a recessive allele of a gene that is linked to a gene with a recessive allele that determines black body color. T. H. Morgan crossed black-bodied, normal-winged females and gray-bodied, vestigial-winged males. The F1 were all gray bodied, normal winged. The F1 females were crossed to homozygous recessive males to produce testcross progeny. Morgan calculated the map distance to be 17 map units. Which of the following information is correct about the testcross progeny?