You Are Studying a Weasel and Find That Its Genome $\kappa$

question 92

Multiple Choice

You are studying a weasel and find that its genome contains 7 J $\kappa$ and 55 V $\kappa$ genes.Other sources of variation (such as changes in the site at which a J sequence joins a V sequence and the ability of deoxynucleotidyl transferase to insert nucleotides at sites of strand breakage) have been found to introduce an additional ten-fold increase in variability.Assuming that any V sequence can join with any J sequence,how many different $\kappa$ chains can this organism make?

• A)620
• B)385
• C)3850
• D)70
• E)550

Understand the structure and function of capillaries in the circulatory system.

Identify the different types of capillaries and their unique features.

Comprehend the processes involved in the exchange between capillaries and interstitial spaces.

Recognize the role and regulation of precapillary sphincters in blood flow.

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Definitions:

Proboscis

A long projection originating from an animal's head, particularly in insects, that serves for either eating or detecting stimuli.

Spongocoel

The central cavity of a sponge.

Mesophyll

Photosynthetic tissue in the interior of a leaf; sometimes differentiated into palisade mesophyll and spongy mesophyll.

Spicule

A small, needle-like structure or particle, made of calcium carbonate or silica, found in sponges and certain other invertebrates, providing support.