In Peas, Tall (T)is Dominant to Short (T), Red Flowers

question 8

Multiple Choice

In peas, tall (T) is dominant to short (t) , red flowers (R) is dominant to white flowers (r) , and wide leaves (W) is dominant to narrow leaves (w) .A tall plant that has red flowers and wide leaves is crossed to a short plant that has white flowers and narrow leaves.The resulting progeny are shown in the table.
$\begin{array}{|l|r|}\hline \text { tall, red, wide } & 381 \\\hline \text { tall, white, wide } & 122 \\\hline \text { short, red, wide } & 118 \\\hline \text { short, white, wide } & 379 \\\hline & 1000 \\\hline\end{array}$
-If two or more of the genes are linked, what map distance separates them?

• A)4 m.u.
• B)12 m.u.
• C)24 m.u.
• D)50 m.u.
• E)None of the genes are linked to each other.

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Definitions:

Elaboration

The process of adding more information or detail to a concept, idea, or argument in order to enhance understanding or clarity.

Medusa

A jellyfish-like animal; a free-swimming, umbrella-shaped stage in the life cycle of certain cnidarians. Compare with polyp.

Planula

The free-swimming, ciliated larva form of certain cnidarians, such as jellyfish, before it settles on a surface and develops into a polyp.

Miracidium

A free-swimming larval stage in the life cycle of certain parasitic flukes, hatching from eggs and infecting the first intermediate host, typically a snail.