The Parthenogenetic Whiptail Lizards of the Desert Southwest Create No

question 10

Multiple Choice

The parthenogenetic whiptail lizards of the desert Southwest create no new genetic combinations during crossing-over, like other animals, because

• A)all the crosses are double, eventually restoring each chromosome to its original condition.
• B)they possess no homologous chromosomes; crossing-over in this species occurs between genetically identical sister chromatids.
• C)parthenogenetic species forgo meiosis I, when crossing-over normally occurs.
• D)accumulated mutation within the species has modified the centromeres, disrupted the formation of a bivalent, and prevented crossing-over from taking place.

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Definitions:

Cardiac Output

The volume of blood the heart pumps per minute, which is crucial for maintaining blood flow to the body.

Ventricular Contractions

Heartbeats initiated by electrical impulses causing the ventricles to contract, pumping blood out of the heart.

Cardiac Contractile Strength

Cardiac Contractile Strength refers to the force generated by the heart muscle during contraction, crucial for pumping blood effectively throughout the body.

Peripheral Vessels

Blood vessels that are located outside of the heart and brain, typically referring to those that supply the arms, legs, and organs of the body.