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Genetics And Heredity Unit Test REVIEW
Test Description: Mendel, punnett squares, genes, chromo, pedigrees, basic sex vs asex repro
Instructions: Answer all questions to get your test result.
1) What does a Punnett square show?
A
the exact type and percentage of offspring parents will produce
B
all the possible types of offspring parents could produce
C
the possible pedigrees that Mendel's genetic crosses produced
D
only the dominant alleles in a genetic cross
2) What do sexual reproduction and asexual reproduction have in common?
A
traits are passed to offspring for the continuation of the species
B
the offspring are always different from the parents
C
the offspring traits are unpredictable
D
the offspring are identical to one parent
3) Factors that control traits are called . . .
A
genes
B
punnett squares
C
pedigrees
D
hybrids
4) Where are chromosomes located?
A
inside the traits
B
inside the nucleus
C
inside the DNA
D
inside the genes
5) A purebred blue fish is crossed with a purebred red fish. The resulting offspring are 100% patchwork fish. Why does this happen?
A
Both blue and red are dominant.
B
Red is dominant over blue.
C
Neither blue nor red is dominant.
D
Blue is dominant over red.
6) A purebred red cow is crossed with a purebred white cow. The result is a roan cow (red and white cow). Why does this happen?
A
Red has complete dominance.
B
White has complete dominance.
C
Red and white are corecessive.
D
Red and white are codominant.
7) A cell has 40 chromosomes. How many chromosomes will be in each daughter cell after the parent cell has undergone meiosis?
A
10
B
40
C
30
D
20
8) A cell has 8 chromosomes. How many chromosomes will be in each daughter cell after the parent cell has undergone mitosis?
A
8
B
2
C
4
D
16
9) An organism's physical appearance is its
A
heterozygous
B
phenotype
C
genotype
D
homozygous
10) An organism's genetic makeup is its
A
homozygous
B
phenotype
C
genotype
D
heterozygous
11) In peppers, red is dominant over yellow. If a red pepper is crossed with a yellow pepper and all of the offspring are red, then what are the probable genotypes of the parents?
A
RR and rr
B
rr and rr
C
Rr and rr
D
Rr and Rr
12) In peppers, hot flavor is dominant over mild flavor. A hot pepper is crossed with a mild pepper and these were the results: 42% hot, 58% mild. What are the probable genotypes of the parents?
A
Rr and Rr
B
Rr and RR
C
RR and rr
D
Rr and rr
13) In poodles, white is recessive and black is dominant. Suppose two black poodles are crossed, resulting in 9 babies. If two of the babies are white and the rest are black, what are the probable genotypes of the parents
A
Rr and RR
B
Rr and Rr
C
RR and rr
D
RR and RR
14) Which of the following shows a cross of two hybrid flowers?
A
Aax AA
B
aa x aa
C
AA x aa
D
Aa x Aa
15) Chromosomes are made of
A
strands of DNA , segmented into genes
B
male and female sex cells
C
a nucleus which is the control center of the cell
D
a cell membrane and mitochondria
*select an answer for all questions
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