Question

Which of the following is true regarding maternal effect genes?

Group of answer choices

Hunchback in initially expressed throughout the cytoplasm

Torso in initially activated throughout the cytoplasm

Nanos is initially expressed only in the anterior cytoplasm

Caudal is expressed initially only in the posterior cytoplasm

Bicoid is initially expressed only in the posterior cytoplasm

Answer 1

Drosophila embryo development is a huge topic however regarding to the asked queries Hunchback is initially expressed throughout the cytoplasm is true !!

Small stuffs are below,

Drobabilla combeyb ganes Chocomila Polans follicle cells . Torpedo G (Gurken Aposterion stecepten O: 941 Anleront Nurse call ocyle Tomminal foliche U cels . A A Nucleus Gurkem protin Egg- Chamber Long story shoost, during embryogenesis & Anderwion posterior - polarite delenmination process include guen gunpes toopedo signaling at the posterion of egg chamber - and active PKA that oriente microtubules growing and (t end) at the posterion. Kinesin, a motor proteins then carrier Oskay mRNA 6 Nonals to the trend ne posterion Is Dyrein, another motor protein carries Bicoid to the - end on anterion chamber. (Bicoid ) Nanos Head tout. Hunchback o codal mRNA has no proper motor protein binding site is they straid through the egg buld Bicoid & Nanos Scule

gradient als 6 Bicoid Concentration made their Nomon's rohibit Hunchback inhibito Codal.. p hunek back codas. contorce nmols emcentrahl MRNA proton Ankoron Prokina Postariem (4) Ooogle mRNAG. 1 1 Hunchback dar ) Ecely clounge combayo parking - After that gradient of dif. Proteints express gaf genes o painsule genes that he gradually compidle embooyo development. o Torso-like seceptons are membrane bound receptor s are the middler vital points of Receptors Tyrrogin kinare (RTK) pathway Tongo are poubent in the Jolieuler cells (polar) that also helps is Anterion / Postion polarity actermination.