Download 1. In dogs the allele for dark Brown hair color (E)

1.
In dogs the allele for dark Brown hair color (E) is dominant over the allele for white hair color (e). The
allele for short hair (F) is dominant over the allele for long hair (f). A number of times, dark brown
colored animals with the same genotype are crossbred with white, short haired animals The phenotypes
of the offspring and their numbers are mentioned in the table below.
Phenotype offspring
number
Dark - short
dark - long
white – short
white- long
29
9
31
11
What are the genotypes of the parental couples?
A. EeFf x eeFf
B. EeFf x eeFF
C. EEFf x eeFf
D. EeFF x eeFf
2.
In fruit flies, eye color is, among other things, determined by a gene on the X-chromosome. The allele
for red eye color is dominant over the allele for white eye color.
For which of the following crossbreeds will all male descendants have white eyes?
A. heterozygote female x red eyed male
B. heterozygote female x white eyed male
C. white eyed female x red eyed male
D. homozygote red eyed female x white eyed male
3.
A parental couple has three sons and no daughters. What are, in theory, the odds of the next child being
a daughter?
A. 1/4
B. 1/3
C. 1/2
D. 3/4
4.
The number of chromosomes in the nucleus of a male reproductive cell in an organism is 4. In these
organisms, the determination of sex is the same as in humans. What is the number of chromosomes in
the nucleus of a female reproductive cell in an organism of the same species?
A. 2
B. 4
C. 5
D. 8
5.
The occurrence of a certain hereditary trait is depicted In the family tree of a particular family.
Is the allele that causes the trait recessive? And is it X-chomosomal?
Recessive
A.
B.
C.
D.
Ja
Ja
Nee
Nee
X- chromosomal
Ja
Nee
Ja
Nee
6.
Colorblindness in humans is caused by a recessive X-chromosomal allele. Person P in the family tree
below is colorblind.
In which of the persons 1 through 7 could the allele for coloblindness from person P be found through
inheritance?
A. In 1, in 2 and in 4
B. In 1 and in 5
C. In 3 and in 6
D. In 3 and in 7
7.
Two types of females occur in honey bees: the Queen and the worker bee. Depending on the food
received by each female larvae, they could be either a Queen or a worker bee. What is this phenomena
called where this difference in adult stage occurs?
A. Metamorphosis
B. Modification
C. Mutation
D. Selection
8.
For individuals 5 and six in the next family tree is known that thay have blue eyes. The allele for blue
eyes is recessive with regards to Brown eyes.
Can you tell with certainty if either one of the individuals 1, 2, 3 of 4 has blue eyes? If yes, which
individual has or which individuals have blue eyes?
A. No, you cannot tell with certainty
B. Yes, individual 1 or individual 2
C. Yes, individual 3 or individual 4
D. Yes, individual 3 and individual 4
9.
The scheme depicts a stage of meiosis in orgamism Q, for which n=2.
Some statements are made about this scheme:
1. If chromosome 1 is from the father of individual Q, chromosome 2 is from the mother of Q.
2. Chromosome 1 and 2 could be from the father of Q and chromosomes 3 and 4 of the mother of Q.
3. At the division of the chromosomes, chromosome 1 goes to one pool and chromosome 2 goes to
another pool.
4. At the division of the chromosomes, chromosomes 1 and 2 go to one pool and chromosomes 3 and 4
go to another pool.
Which statements are true?
A. 1 and 3
B. 1 and 4
C. 2 and 3
D. 2 and 4
10.
A drone (male bee) is haploid. He developed from an unfertilized egg cell. In the forming of body cells
and in the forming of reproductive cells by this drone there are divisions. Which divisions occur in a
drone?
A. only mitosis
B. only meiosis II
C. only mitosis and meiosis I
D. mitosis, meiosis I and meiosis II
11.
Striated muscle tissue fibres often use a lot of oxigen per time unit. When it comes to structure, this
statement is supported by the appearance in the muscle fibre of:
A. a large number of nuclei
B. a large number of mitochondria
C. a large external surface
D. a large number of glycogen particles
12.
Below are a number of processes that take place in the muscle tissue:
1. The production of proteins and amino acids
2. The production of glycogen and glucose
3. The production of lactic acid from glucose
4. The production of fat from faaty acids and glycerol
The energy that is used for the contraction of a muscle is released with:
A. only 3
B. only 4
C. 1 and 4
D. 2 and 3
13.
Impulses are passed on from a neuron to a muscle cell by a synaps. By admitting some substances to the
synaptic cleft a cramp state can be induced in the muscle fibre. What could be the effect of these
substances?
A. They break down the neurotransmitters in the synaptic cleft, similarly to the way this is normally
done by enzymes.
B. They restrict the performance of enzymes that normally break down the neurotransmitters in the
synaptic cleft.
C. They prevent depolarization of the neuron membrane at the synapse.
D. They prevent depolarization of the muscle fiber membrane at the synapse.
14.
What is the name of the part marked by X?
A. medulla oblongata
B. corpus callosum
C. hypothalamus
D. pons
15.
Where does that conscious awareness of sensatory input take place? At:
A. 1
B. 2
C. 3
D. 4
16.
An action potential is reached in nine neighboring places on an axon. The results are depicted in a
diagram, the vertical axis depicting the action potential (___/\___). Which of the figures below correctly
depicts the results ?
A. Figure 1
B. Figure 2
C. Figure 3
D. Figure 4
17.
The drawing depicts a cross-cut of the spinal cord. In which of the marked places is the soma of a motor
neuron located?
A. At place p
B. At place q
C. At place r
D. At place s
18.
Intestinal juice glands secrete substances under the influence of the autonomic nervous system. Will
intestinal juice glands secrete substances under the influence of the (ortho)sympathetic or the
parasympathetic part of the autonomic nervous system? And the adrenal medulla?
Intestinal juice glands under the influence of
Adrenal medulla under the influence of
A.
B.
C.
D.
the (ortho)sympathetic part
the parasympathetic part
the (ortho)sympathetic part
the parasympathetic part
the (ortho)sympathetic part
the (ortho)sympathetic part
the parasympathetic part
the parasympathetic part
19.
A neuron is stimulated at P, creating impulses. At which places could these impulses me measured?
A. Only at place 1
B. Only at place 2
C. Only at places 1 and 2
D. At places 1, 2 and 3
20.
A sensory neuron conducts impulses. In which direction do these impulses run?
A. From a neuron to a cell
B. From a part of the central nervous system to a muscle
C. From a neuron to a part of the central nervous system
D. From a part of the central nervous system to another part of the central nervous system
21.
In humans, are there reflexes that run through the brain? Are humans conscious of all reflexes?
A.
B.
C.
D.
Through the brain
conscious
yes
Yes
No
no
yes
no
yes
no
22.
If someone trips, he will try to avaid falling down. Do impulses in the cerebellum play a part? And
impulses in the brainstem?
In the cerebellum
A.
B.
C.
D.
yes
yes
no
no
in the brainstem
yes
no
yes
no