Each somatic cell for a koala
bear (Phascolarctos cinereus) contains 16
chromosomes. Please answer the following
questions.
a) What is the diploid number of this species? (1 mark)
b) What is the haploid number of this species? (1 mark)
c) How many homologous chromosome pairs are present in a cell during interphase? (1 mark)
Homework Answers
Diploid no of chromosomes 2n = 16
Haploid no fo chromosomes n = 8
Interphase no of chromosomes = 18 (2n) 8 homologous pairs of chromosomes.
The Koala bear (Phascolarctos cinereus) is diploid and has 16 chromosomes.
a. Diploid number of this species is = 16
b. Haploid number of this species is = 8
c. Homologous chromosome pairs are present in a cell during interphase= 16 (2n), so 8 homologous pairs of chromosomes.
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