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?

TLS Online TPP Program

#Question id: 27999

#Research Methodology

Research is

TLS Online TPP Program

#Question id: 8917

#I Life Science/ Life Sciences Group – I-V

The Hox genes came to regulate each of the following in what sequence, from earliest to most recent?

1. identity and position of paired appendages in protostome embryos

2. formation of water channels in sponges

3. anterior-posterior orientation of segments in protostome embryos

4. positioning of tentacles in cnidarians

5. anterior-posterior orientation in vertebrate embryos

TLS Online TPP Program

#Question id: 19477

#SCPH01 Biochemistry

Cry V and Cry VI groups were added; these proteins are primarily 

TLS Online TPP Program

#Question id: 3654

#SCPH28 | Zoology

Cleavage of the cyclobutane ring of pyrimidine dimers by ______________ restores the original DNA structure.

TLS Online TPP Program

#Question id: 1081

#SCPH28 | Zoology

Which of the following is a type of local signaling in which a cell secretes a signal molecule that affects neighboring cells?