The conclusion that early hominins were bipedal is based in part on examination of four of the following. Which one
is the exception?
a. their S-shaped backbone
b. the position of the opening for the spinal cord in the skull
c. footprints
d. their jaw shape
e. length of the femur
ANSWER: d
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A patient has a tumor that causes her to secrete an excess amount of antidiuretic hormone (ADH). You would expect that the excessive level of ADH will ultimately cause ________
A) decreased blood pressure B) increased blood pressure C) an increase in urine volume D) increased ventilation rate
The processes illustrated in the models depicted above all result in which of the following?
A) Transcription B) An increase in genetic variation C) An increase in the chromosome number D) Horizontal gene transfer
In birds, sex is determined by a ZW chromosome scheme. Males are ZZ and females are ZW. A recessive lethal allele that causes death of the embryo is sometimes present on the Z chromosome in pigeons
What would be the sex ratio in the offspring of a cross between a male that is heterozygous for the lethal allele and a normal female? A) 2:1 male to female B) 1:2 male to female C) 1:1 male to female D) 3:1 male to female
What are the four major models of the evolution of female mate preferences?
What will be an ideal response?