Which of these fly organs, as they exist in the description above, best illustrates an exaptation?

A) vestigial halteres
B) halteres
C) mouthparts
D) eggs


B

Biology & Microbiology

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What do you know about converting from moles to mass? How does it relate to the question?

What will be an ideal response?

Biology & Microbiology

You are a genetic counselor, and a couple comes to you with concerns that if they have a child

together it could have hemophilia. Neither one of them has hemophilia, but the woman's biological father did have an X-linked recessive form of hemophilia. Which of the following would be a correct thing to tell them?

a. Any child that they produce will have a 50% chance of having hemophilia. b. All of their male offspring will have hemophilia, and each of their female offspring will have a 50% chance of having hemophilia. c. None of their offspring should have hemophilia, but all of their female offspring will be carriers for hemophilia. d. Each of their male offspring will have a 50% chance of having hemophilia, and while their female offspring should not have hemophilia, they will each have a 50% chance of being carriers. e. All of their male offspring will have hemophilia, and while their female offspring should not have hemophilia, they will all be carriers.

Biology & Microbiology

_______ are large glycoprotein molecules that serve as the specific receptors of B cells and as antibodies.

A) Immunoglobulin molecules B) Antigens C) Human cell markers D) Immunogens

Biology & Microbiology

If you put 20g of food in 180ml of sterile water and blend, what dilution factor does this represent?

A) 1:10 B) 1:100 C) 1:1000 D) This is not a dilution.

Biology & Microbiology