In the past, a diploid banana plant (n=11) produced an "unreduced" gamete. This unusual, diploid gamete...
In the past, a diploid banana plant (n=11) produced an "unreduced" gamete. This unusual, diploid gamete as fertilized by a normal gamete. Imagine that you were to examine cells from the resulting (live!) offspring. For full credit, EXPLAIN your reasoning.
A. How many chromosomes would you expect to see in a somatic (i.e., non-reproductive) cell?
B. How many chromosomes would you expect to see in a prophase I cell?
C. How many chromosomes would you expect to see in a mature gamete?
D. What reproductive consequences, if any, would you predict?
Homework Answers
A. How many chromosomes would you expect to see in a somatic
(i.e., non-reproductive) cell?
The answer 33 (22 from non reduced gamete and 11 from
nomral gamete)
B. How many chromosomes would you expect to see in a prophase I
cell?
During Anaphase I the chromsome number reduced because of
chormosome segreagation, so as this stage is after prophase I, the
cell which in prophase I contians the same chromosome number as
somatic cell. So, the chromosome number here is 33.
C. How many chromosomes would you expect to see in a mature
gamete?
As the gametes has half of the chromosome of number of
nomral complementation, there is a chance of cells with 16 and 17
chromosomes.
D. What reproductive consequences, if any, would you
predict?
Due to this there is a chance of aneuploid
plants.
Add Answer to:
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