In a Dihybrid Cross Involving Two Autosomal Traits on Different

question 17

Multiple Choice

In a dihybrid cross involving two autosomal traits on different chromosomes in which the parents are purebred for the opposite forms of both traits, how many of the offspring would be expected to be homozygous recessive for both traits?

• A)1 out of 16
• B)3 out of 16
• C)6 out of 16
• D)9 out of 16

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Definitions:

Antacids

Over-the-counter medications that neutralize stomach acid to relieve heartburn and indigestion.

Pulse Oximetry

A non-invasive method of measuring the oxygen saturation level of the blood, indicating how well oxygen is being sent to parts of the body furthest from the heart.

Chronic Obstructive Pulmonary Disease (COPD)

A group of lung diseases, including emphysema and chronic bronchitis, that block airflow and make breathing difficult.

Recumbent Position

A lying down position in which the individual is on their back, commonly used in medical and therapeutic settings.