Biology Past Questions

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1676

Which of the following represents the phenotypic ratio, when a plant Rr is crossed with another plant Rr,
assuming that the gene R for round seed is dominant and wrinkled r is recessive?

A. 1:2:1
B. 2:2:1
C. 3:2
D. 3:1
E. 4:1

View Answer & Discuss (7) WAEC 1989

1677

All hereditary characters in a cell are passed on from parent-cell to daughter-cell through the process of

A. mitosis
B. meiosis
C. fertilization
D. implantation
E. gestation

View Answer & Discuss (14) WAEC 1989

1678

What stage is illustrated by the diagram?

A. lnterphase
B. Prophase
C. Metaphase
D. Anaphase
E. Telophase

View Answer & Discuss (1) WAEC 1989

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1679

What is the name given to the structure labelled A at this stage of cell division

A. Chromatin
B. Centrtomere
C. Chromatid
D. Gene
E. Daughter-chromosome

View Answer & Discuss (14) WAEC 1989

1680

The evidence for evolution can be obtained from the following except

A. fossil
B. anatomy
C. history
D. embryology
E. taxonomy.

View Answer & Discuss (7) WAEC 1989

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