In Drosophila, a cross between M males and P females is fertile because
a. P elements are inherited maternally.
b. males produce a repressor protein.
c. P elements are not expressed in females.
d. egg cytoplasm contains a protein that suppresses transposition.
e. P elements are nonautonomous.
Ans: d
You might also like to view...
Explain what happens when NaCl and other salts build up in soils?
What will be an ideal response?
A modern system of classification gives the category name domain to
A) Prokaryota. B) Eukarya. C) Hominidae. D) Fungi. E) insects.
You go to the movies with a friend, and he refuses to share your popcorn. He says that he heard that movie theatre popcorn is triploid. What is the most likely explanation for this?
A. All popcorn is triploid, because the starchy part of the kernel is triploid endosperm tissue. B. The buttery topping on movie theatre popcorn causes chromosomal abnormalities. C. Most corn is genetically modified by large agricultural companies. D. Popcorn is made from a different species of maize than regular corn.
Select the correct statement about archaeal ribosomes.
A. Archaeal ribosomes have subunits that are identical in shape and chemical components to those of bacteria. B. The chemical components of archaean ribosomes are more similar to those of eukaryotic ribosomes than to those of bacterial ribosomes. C. Archaeal ribosomal proteins are more similar to bacterial ribosomal proteins than to eukaryotic ribosomal proteins. D. Archaeal ribosomes are susceptible to antibiotics, similar to bacterial ribosomes.