In the study of the evolution of FOXP2, evidence supporting the evolution of a family language disorder comes from what important link?
A. The family members were all lacking vocal cords.
B. The identification of multiple mutations in multiple genes is responsible for the disorder.
C. The identification of a single mutation in a single gene is responsible for the disorder.
D. The disorder is common in the family.
E. The identification that the same mutation happens in all patients with speech disorders.
C. The identification of a single mutation in a single gene is responsible for the disorder.
You might also like to view...
In an isometric contraction of a skeletal muscle,
(a) the tension in the muscle increases. (b) movement occurs. (c) no movement occurs. (d) both a and c occur.
The number of animal species now known is about:
A. 10 million B. 100 million C. 1 million D. 15 million E. 5 million
Osteogenesis imperfecta, also known as "brittle bone disease," is caused by a genetic defect in the gene that encodes a major fibrous protein found in bone called ________
Fill in the blank(s) with correct word
A microbiologist is working with two genera of bacteria, A and B, to determine if cells are competent. Strains are grown under optimal conditions, and DNA fragments that carry the gene for green fluorescent protein are added to each culture at 20-minute intervals. Samples from each treatment are plated to nutrient agar and incubated, after which the plates are examined under an ultraviolet lamp. The microbiologist observes that all plates of bacteria B contain colonies that are fluorescent, while for bacteria A only the plates from stationary phase demonstrate fluorescent colonies. What can be concluded from these results?
A. Both bacteria A and bacteria B cells are competent. B. Competence in bacteria B is dependent on the phase of growth. C. Competence in bacteria A is constitutively expressed. D. Neither bacteria A nor bacteria B cells are competent.