1. USE PHOTO INCLUDED
Use the following diagram and information to help you answer the next question.
The circles in the diagram below represent the centromere at which two chromatids are joined together. The red and the blue chromosomes shown are a homologous pair. The "X" represents the location where a crossover occurs.
Crossing over is more likely to occur between genes that are relatively far apart than between genes that are relatively close together.
For the three genes shown, identify the row that shows the position of the alleles after the crossover occurs.
crossing over
a.
Gamete 1
Gamete 2
Gamete 3
Gamete 4
AbC
AbC
aBc
aBc
b.
Gamete 1
Gamete 2
Gamete 3
Gamete 4
Abc
ABc
abC
aBC
c.
Gamete 1
Gamete 2
Gamete 3
Gamete 4
Abc
Abc
aBC
aBC
d.
Gamete 1
Gamete 2
Gamete 3
Gamete 4
Abc
AbC
aBc
2. LOOK AT PHOTO
Determine whether the structure in the life cycle of a moss is haploid or diploid and determine the process used to make the structure.
1 - Haploid
2 - Diploid
A - Mitosis
B - Meiosis
C - Fertilization
Gametophyte
Answer
Answer
Sporophyte
Answer
Answer
Spore
Answer
Answer
Zygote
Answer
Answer
Egg
Answer
Answer
3.
The DNA in a sunbather’s skin cells may mutate after prolonged exposure to the sun. The process that will pass the mutation along to daughter cells is ___(1)___, which is a mutation that will_____(2)_______.
a.
Process (1)
Description (2)
meiosis
be inherited by the children of the sunbather
b.
Process (1)
Description (2)
meiosis
not be inherited by the children of the sunbather
c.
Process (1)
Description (2)
mitosis
not be inherited by the children of the sunbather
d.
Process (1)
Description (2)
mitosis
be inherited by the children of the sunbather
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