DAT EXAM IO QUESTIONS WITH
DETAILED VERIFIED ANSWERS
A blood bank accidentally mislabels all of the blood sent to a
hospital. Individuals of which blood type would be unaffected no
matter which type of blood they are given?
A.
O+
B.
O-
C.
AB+
D.
AB-
E.
A+ - correct answer- AB+
,A breeder attempts to cross an alpaca with a llama for thicker
wool and finds that the hybrid offspring can rarely live for more
than a few days. Which of the following best describes what this
outcome probably resulted from?
A.
Prezygotic reproductive isolation
B.
Postzygotic reproductive isolation
C.
Polyploidy
D.
Mechanical isolation
E.
Sympatric speciation - correct answer- postzygotic
reproductive isolation
A defect in which structure of a plant would prevent an ovule
from being produced?
,A.
Stigma
B.
Pistil
C.
Stamen
D.
Sepal
E.
Petal - correct answer- pistil:
entire
female part of flower
A man and a woman have normal skin color but both have one
parent with albinism, which is caused by an autosomal recessive
allele. If the couple intends on having 2 children, which of the
following is the probability that both children will have albinism?
, A.
0
(3.8%)
B.
1/2
(8.8%)
C.
1/4
(21.6%)
D.
1/8
(11.1%)
E.
1/16
(54.7%) - correct answer- 1/16
AaxAa Cross=1/4
two children = 1/4 x 1/4
A marine biologist discovers an organism in the ocean with the
following characteristics: BILATERAL SYMMETRY, body
segmentation, and multiple pairs of jointed appendages. Which
DETAILED VERIFIED ANSWERS
A blood bank accidentally mislabels all of the blood sent to a
hospital. Individuals of which blood type would be unaffected no
matter which type of blood they are given?
A.
O+
B.
O-
C.
AB+
D.
AB-
E.
A+ - correct answer- AB+
,A breeder attempts to cross an alpaca with a llama for thicker
wool and finds that the hybrid offspring can rarely live for more
than a few days. Which of the following best describes what this
outcome probably resulted from?
A.
Prezygotic reproductive isolation
B.
Postzygotic reproductive isolation
C.
Polyploidy
D.
Mechanical isolation
E.
Sympatric speciation - correct answer- postzygotic
reproductive isolation
A defect in which structure of a plant would prevent an ovule
from being produced?
,A.
Stigma
B.
Pistil
C.
Stamen
D.
Sepal
E.
Petal - correct answer- pistil:
entire
female part of flower
A man and a woman have normal skin color but both have one
parent with albinism, which is caused by an autosomal recessive
allele. If the couple intends on having 2 children, which of the
following is the probability that both children will have albinism?
, A.
0
(3.8%)
B.
1/2
(8.8%)
C.
1/4
(21.6%)
D.
1/8
(11.1%)
E.
1/16
(54.7%) - correct answer- 1/16
AaxAa Cross=1/4
two children = 1/4 x 1/4
A marine biologist discovers an organism in the ocean with the
following characteristics: BILATERAL SYMMETRY, body
segmentation, and multiple pairs of jointed appendages. Which
