Bioprocrss Trial 2
Bioprocrss Trial 2
Bioprocrss Trial 2
Name: ____________________________________________
1) Two pea plants, hybrid for a single trait, produce 60 pea plants. Approximately how many of the pea plants are expected to exhibit
the recessive trait?
1) 15 2) 30 3) 60 4) 45
2) In certain rats, black fur is dominant over white fur. If two rats, both heterozygous for fur color, are mated, their offspring would
be expected to have
1) three different genotypes and three different colors 3) two different genotypes and three different colors
2) four different genotypes and two different colors 4) three different genotypes and two different colors
3) Polydactyly is a human characteristic in which a person has six fingers per hand. The trait for polydactyly is dominant over the
trait for five fingers. If a man who is heterozygous for this trait marries a woman with the normal number of fingers, what are the
chances that their child would be polydactyl?
1) 100% 2) 0% 3) 75% 4) 50%
4) When a mouse with black fur is crossed with a mouse with white fur, all F1 generation offspring have grey fur. Which
phenotypic results can be expected in the F2 generation?
1) 25% black, 50% grey, 25% white 3) 100% grey
2) 25% black, 75% white 4) 50% black, 50% white
5) The genotype for coat color of roan cattle is represented as CRCW. The offspring produced by crosses of these cattle typically
exhibit a 1:2:1 genotypic ratio. What is the phenotypic ratio of these same offspring?
1) 3:1 2) 1:2:1 3) 1:1 4) 2:1
6) In chickens, rose comb (R) is dominant over single comb (r). When a heterozygous rose-combed rooster is mated with several
single-combed hens, what is the expected phenotypic ratio of the offspring?
1) 50% rose-combed and 50% single-combed 3) 100% rose-combed
2) 100% single-combed 4) 75% rose-combed and 25% single-combed
7) The pedigree chart below represents the inheritance of sickle cell anemia through three generations.
The pedigree chart below represents the inheritance of color blindness through three generations.
11) Mary and Steve are expecting another child. What is the probability that the new baby will be colorblind?
1) 0% 2) 100% 3) 50% 4) 25%
12) Which is a true statement about the genotype of Alissa and Haley regarding color blindness?
1) Alissa is homozygous dominant, and Haley is a carrier.
2) Both carry one recessive allele.
3) Alissa is a carrier, and Haley is homozygous dominant.
4) Both are homozygous recessive.
13) What percentages can be expected in the offspring of a cross between a female carrier for color blindness and a male with normal
color vision?
1) 25% normal males, 25% colorblind males, 25% carrier females, 25% colorblind females
2) 50% colorblind males, 50% colorblind females
3) 25% normal males, 25% colorblind males, 25% normal females, 25% carrier females
4) 75% normal males, 25% carrier females
14) In raccoons, a dark face mask is dominant over a bleached face mask. Several crosses were made between raccoons that were
heterozygous for dark face mask and raccoons that were homozygous for bleached face mask. What percentage of the offspring
would be expected to have a dark face mask?
1) 100% 2) 50% 3) 0% 4) 75%
Questions 15 and 16 refer to the following:
The pedigree chart below shows the inheritance of handedness in humans over three generations. The gene for right-handedness (R)
is dominant over the gene for left-handedness (r).
17) What are the genotypes of individuals A and B with regard to Tay-Sachs disease?
1) Both must be heterozygous.
2) One must be homozygous dominant and the other must be homozygous recessive.
3) Both must be homozygous.
4) One must be homozygous dominant and the other must be heterozygous.
18) If individuals C and D have another child, what is the chance this child will exhibit Tay-Sachs disease?
1) 0% 2) 100% 3) 50% 4) 25%
19) Which statement is true about individuals E and F?
1) They have an accumulation of excess fatty material in their nerve tissue.
2) They are unable to metabolize phenylalanine because they lack a specific enzyme.
3) They have an abnormal chromosome number.
4) They are unable to metabolize glucose.
20) In intermediate inheritance, a cross between two heterozygotes will usually produce offspring that exhibit a phenotypic ratio of
1) 9:3:3:1 2) 3:1 3) 1:2:1 4) 1:1
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Questions 21 through 23 refer to the following:
Keys are used by biologists to accurately classify unknown organisms such as the unidentified female mosquito shown in the diagram
below. These keys are designed to categorize organisms according to structural characteristics. The key shows various characteristics
used to identify the differences between Anopheles, Deinocerites, Culex, Psorophora, and Aedes mosquitoes.
21) According to the key, which feature distinguishes male from female mosquitoes?
1) leg scales 3) palp length
2) antennae appearance 4) abdomen points
22) According to the key, which characteristics are necessary to identify a female Anopheles mosquito?
1) antennae, palps, and proboscis 3) palps, abdomen tip, and wings
2) eyes, scales on legs, and abdomen tip 4) wings, proboscis, and scales on legs
23) According to the key, the unknown female mosquito shown above belongs to the genus known as
1) Psorophora 2) Aedes 3) Culex 4) Deinocerites
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24) Which two organisms in the chart below have chromosomes that are most similar in genetic composition?
The Pine Bush ecosystem near Albany, New York, is one of the last known habitats of the nearly extinct Karner Blue butterfly. The
butterfly's larvae feed on the wild green plant, lupine. The larvae are in turn consumed by predatory wasps. The four groups below
represent other organisms living in this ecosystem.
26) Based on the data shown, the Karner Blue larvae belong in which group?
1) A 2) B 3) C 4) D
27) Which food chain best represents the information in the reading passage?
1) wasps !! Karner Blue larvae !! lupine 3) lupine !! Karner Blue larvae !! wasps
2) lupine !! wasps !! Karner Blue larvae 4) Karner Blue larvae !! lupine !! wasps
28) Which group in the given table contains decomposers?
1) A 2) B 3) C 4) D
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Questions 29 and 30 refer to the following:
Analysis of a sample taken from a pond showed variety in both number and type of organisms present. The data collected are shown in
the table below.
29) If the frogs feed on insect larvae, what is the role of the frogs in the pond ecosystem described?
1) consumer 2) parasite 3) host 4) herbivore
30) Which diagram below best represents the organisms from the table arranged as an energy pyramid?
1) 2) 3) 4)
31) Which generalization can be made from the data in the table below?
1) 3)
2) 4)
35) A student was given a sample of food and asked to determine the types of nutrients present in the sample. The student placed
half of the sample in a test tube with Benedict's solution and heated it. The solution turned brick red. When an iodine solution
was added to the remaining half of the sample, it turned blue black.
The student can correctly conclude that the food sample contained
1) polysaccharides and lipids 3) monosaccharides and polypeptides
2) monosaccharides and polysaccharides 4) polypeptides and fats
36) A sealed dialysis membrane containing iodine solution was placed in a beaker of starch solution. After 1 hour, the color of the
starch solution would most likely be
1) blue black 2) red orange 3) white 4) pink
37) To detect the presence of glucose in a substance, a student should heat the substance after it is mixed with
1) Lugol's iodine solution 3) bromthymol blue
2) methylene blue 4) Benedict's solution
38) Which nutrient is correctly paired with the indicator used to detect its presence?
1) protein "" pH paper 3) starch "" Lugol's iodine
2) oil "" Benedict's solution 4) glucose "" bromthymol blue
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39) Which substances would most likely be used to stain wet-mount slides of plant and animal cells?
1) glucose and Lugol's iodine 3) Lugol's iodine and methylene blue
2) hemoglobin and Benedict's solution 4) amylase and bromthymol blue
40) A karyotype is shown in the diagram below.
Which instruments were most likely used to prepare the bean seed as shown?
To determine if light affects the results of this investigation, the investigator should prepare another complete setup in the same
way but change the procedure by
1) placing the setup under artificial white light instead of sunlight
2) using a plant species with nongreen leaves
3) placing this setup in an area with no light
4) submerging this setup in water for 12 hours
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52) The dotted line in the diagram below shows the path taken by an insect larva when it is placed in a round experiment chamber
with a light in the center. Blocks of wood are placed around the light, which cause regions of light and shade within the chamber
as shown. Temperatures are given for light areas.