LIFECYCLE QUESTIONS

1. The diagram shows the life cycle of a single-celled organism. The zoospores are produced by cell division and are small versions of the adult

(a) Mark with an X on the diagram where meiosis takes place in this life cycle.
(1)
(b)  Explain

(i)

why the zoospores labelled X on the diagram all have the same genotype (genetic constitution)
 

 

 

 

 

(2)

(ii)

why the zoospores labelled W will have a variety of different genotypes
 

 

(2)

(c) If a zoospore of this organism contained 4 chromosomes. How many chromosomes would you expect to find in

(i)

the gamete from another organism
 

(1)

(ii)

the adult organism
 

(1)

(iii)

the zygote
 

 

(1)