2023 WASSCE: Likely Biology Questions
On Friday, 1st September, 2023, the 2023 WASSCE Biology paper will be written. Here are some likely questions for all candidates
QUESTIONS
1.a Explain the following terms:
i. test cross;
ii. allele
iii. Albinism
iv. sex linkage
b. A man with normal vision married a woman who is a carrier of colour blindness. With the aid of genetic diagrams determine the likely status of their offspring.
c. Outline Lamarck’s theory of evolution.
2. a.i What is a gene?
ii. Differentiate between the terms genotype and phenotype.
b. Explain the following terms:
i. hybrid;
ii. pure breeding;
iii. Nucleotide.
c. In garden pea seeds, smooth seed coat is dominant over rough seed coat. With the aid of a genetic diagram, determine the result expected if a homozygous rough pea is crossed with a smooth seed coat plant whose parent were rough coated.
READ ALSO: 2023/2024 UPSA Academic Calendar – Undergraduate
3. (a) Explain the following terms:
(i) Test cross;
(ii) recessive allele;
(iii) homozygote.
(b) (i) Why is sickle-cell anaemia considered a deadly disease?
(ii) Explain briefly how sickle-cell anaemia can be reduced in a population
(iii) State one advantage which a carrier of the sickle-cell anaemia trait has.
4. (a) (i) What is competition?
(ii)In a tabular form, state four differences between competition and succession
(b) A pure strain goat with black coloured fur was crossed with a pure strain goat with white coloured fur, all the offspring had black coloured fur.
(i) With the aid of a genetic diagram, determine the phenotypic ratio of the F2 generation if the F1 offspring are selfed.
(ii) What would be the outcome of mating a black heterozygote offspring from the F2 generation with the original black coloured parent?
WASSCE 2023: Food and Nutrition Projected Questions
5. (a) Explain the following terms;
i. test cross
ii. monohybrid cross
(b) In a mango plant, the allele for bean-shaped seed is r and is recessive to round-shaped seed R. With the aid of a genetic diagram, determine the genotypes of the offspring if a homozygous bean shaped parent is crossed with a homozygous round shaped parent.
Send Stories | Social Media | Disclaimer
Send Stories and Articles for publication to [email protected]
We Are Active On Social Media
WhatsApp Channel: JOIN HERE
2024 BECE and WASSCE Channel - JOIN HERE
Facebook: JOIN HERE
Telegram: JOIN HERE
Twitter: FOLLOW US HERE
Instagram: FOLLOW US HERE
Disclaimer:
The information contained in this post on Ghana Education News is for general information purposes only. While we endeavour to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the post for any purpose.