What is the most common chromosomal abnormality conceived?

A. Down syndrome
B. Turner syndrome
C. Edward syndrome
D. Klinefelter syndrome


B) turner syndrome

Biology & Microbiology

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Eukaryotic polymerases interact with which protein that acts as the sliding clamp in eukaryotic DNA replication?

What will be an ideal response?

Biology & Microbiology

Upon examination, a person is found to only have half the normal number of LDL-cholesterol receptors. Which of the following best explains this?

A. pleiotropic inheritance B. incomplete dominance C. X-linked inheritance D. polygenic inheritance

Biology & Microbiology

Which phrase describes the selective permeability of a membrane?

a. the ability of a molecule to pass through a membrane b. the ability of only certain molecules to pass across a membrane c. the need for carrier proteins to transport certain molecules

Biology & Microbiology

Imagine a population of monkeys in South America whose habitat has been reduced to the point where only 25 monkeys survive. This is an example of:

A) population bottleneck. B) natural selection. C) founder effect. D) genetic drift.

Biology & Microbiology