Which teeth type would be used to crush and grind food?
a. canines
b. incisors
c. molars
d. canines and incisors
e. incisors and molars
C
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Congenital deafness in humans is due to the homozygous condition of either or both of the recessive
genes d or e. Both dominant D and E are necessary for normal hearing. Gene D/d affects the middle ear, while gene E/e affects the inner ear. It does not matter how good the normal inner ear (as indicated by E_) is; if there is something wrong in the middle ear, the individual is unable to hear. The same applies for the other gene. Give the phenotypic results of the following crosses: (a) Dd EE ? Dd EE (b) Dd Ee ? Dd Ee (c) dd EE ? DD ee (d) Dd EE ? Dd ee (e) Dd EE ? DD Ee What will be an ideal response?
What fraction of Earth's surface has been altered by human use?
A) 25% B) 50% C) 75% D) 95%
________ causes both genital warts and cervical cancer
Fill in the blank(s) with correct word
Where are the youngest wood and the youngest bark in a tree trunk?
A) Youngest wood is in the center of a tree; youngest bark is the outside of the bark. B) Youngest wood is in the center of a tree; youngest bark is the inner part, next to the vascular cambium. C) Youngest wood is toward the outside, near the vascular cambium; youngest bark is the outside of the bark. D) Youngest wood is toward the outside, near the vascular cambium; youngest bark is the inner part, next to the vascular cambium.