Respuesta :
Answer:
a. autotriploid of species A: 63 chromosomes
b. autotetraploid of species B: 96 chromosomes
c. allotriploid from species A and B: 1) 66 chromosomes and 2) 69 chromosomes
Explanation:
For a.
this species will have 3 haploid sets of chromosomes ('tri' means 3)
one haploid set = 21
21 × 3 = 63 chromosomes
For b.
this species will have 4 haploid sets of chromosomes ('tetra' means 4)
one haploid set = 24
24 × 4 = 96 chromosomes
For c.
there are two ways to do this:
1) two sets of chromosomes from species A and one from species B
42 + 24 = 66 chromosomes
2) one set of chromosomes from species A and two from species B
21 + 48 = 69 chromosomes
Hope that answers the question, have a great day!
Autotriploid of species A is 63 and autotetraploid of species B is 96. The allotriploid of species A and B are 66 and 69.
What is allotriploid and autotriploid ?
Autotriploid is the condition in which the number of the chromosomal set is thrice or in triploid form. In autotetraploid, the set has four copies of the chromosome.
In allotriploid, one genome set is from one species while the another is from the other species. It occurs in plant species.
For case a:
The species will have an Autotriploid condition which is the presence of 3 haploid sets of chromosomes.
If halpoid = 21, then triploid = 63 chromosome
For case b:
The species will have an Autotetraploid condition which is the presence of 4 haploid sets of chromosomes.
If halpoid = 24, then tetraploid = 96 chromosome
For case c:
If the two sets of chromosomes are from A species and one from B then 42 + 24 = 66 chromosomes.
If one set of chromosomes is from A species and two from B then 21 + 48 = 69 chromosomes.
Therefore, the autotriploid have three and the autotetraploid has four sets of chromosomes.
Learn more about autotetraploid and autotriploid here:
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