A decrease in relative abundance of a species can lead to
a. an increase in predator avoidance.
b. replacement species.
c. a change in ecosystem structure.
d. rapid growth in the depressed population.
e. greater ecosystem stability.
C
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Anury is the absence or abbreviation of the tail in sheep (and also other animals). It is inherited in an autosomal dominant fashion. A ram with anury is mated to a ewe with a normal tail. The ram’s father had anury, his mother did not. What is the probability that the ram and ewe will produce a lamb with anury? (ram = male; ewe = female)
A. 25% B. 50% C. 75% D. 100% E. No chance
Which enzyme is responsible for catalyzing the peptide bonds between amino acids in translation?
a. protein polymerase b. catalytic rRNA c. peptidyl transferase d. aminoacyl tRNA synthetase
Dominant traits remove recessive traits when both are present in the same individual
__________________ Indicate whether the statement is true or false.
The "grandmother hypothesis" suggests that natural selection may have favored a woman ________
A) moving away from her children and grandchildren B) focusing her energy on caring for her grandchildren, instead of producing more children C) focusing her energy on the production of as many children as possible before reaching menopause D) helping her sisters produce more children