Grade 11 Genetics & inheritance worksheet

What is on the worksheet

1. In a canonical double-stranded DNA sample, adenine is 17% of all bases. Find the guanine percentage, assuming A = T and C = G. Round to 3 decimal places if needed. Answer in %.

2. In the simple Aa × Aa inheritance model with independent outcomes, the probability of aa is 1/4. Among 604 offspring, find the expected aa count, not a guaranteed outcome. Round to 3 decimal places if needed.

3. In the simple Aa × Aa inheritance model with independent outcomes, the probability of aa is 1/4. Among 316 offspring, find the expected aa count, not a guaranteed outcome. Round to 3 decimal places if needed.

4. In pea plants, the allele for a tall stem (T) is dominant over the allele for a short stem (t). Two plants, tt × tt, are crossed. What percentage of the offspring are expected to show a short stem?

5. In the simple Aa × Aa inheritance model with independent outcomes, the probability of aa is 1/4. Among 52 offspring, find the expected aa count, not a guaranteed outcome. Round to 3 decimal places if needed.

6. A DNA template strand reads AAGCCT. Which mRNA sequence is transcribed from it, read base by base in the same order?

   1. UUCGGA
   2. AAGCCT
   3. TTCGGA
   4. AUCGGA

7. Using base-pairing rules, which sequence pairs with the DNA strand TTCATC, read base by base in the same order?

   1. AAGAAG
   2. AAGUAG
   3. AAGTAG
   4. TTCATC

8. A stated model has red RR, white WW and pink RW flowers. What pattern is described?

   1. Complete dominance of red.
   2. Incomplete dominance.
   3. No inheritance.

9. Using base-pairing rules, which sequence pairs with the DNA strand TGATCGTCA, read base by base in the same order?

   1. TGATCGTCA
   2. ACTAGCAGT
   3. ACUAGCAGU
   4. ACTAGCATT

10. In pea plants, the allele for yellow seeds (Y) is dominant over the allele for green seeds (y). Two plants, YY × YY, are crossed. What percentage of the offspring are expected to show green seeds?

11. A DNA template strand reads TTGCGA. Which mRNA sequence is transcribed from it, read base by base in the same order?

    1. AACGAU
    2. AACGCU
    3. TTGCGA
    4. AACGCT

12. In a canonical double-stranded DNA sample, adenine is 40% of all bases. Find the guanine percentage, assuming A = T and C = G. Round to 3 decimal places if needed. Answer in %.

13. A fictional diploid organism has 26 chromosomes in a normal somatic nucleus. In the standard meiosis model, how many chromosomes are in a haploid gamete? Round to 3 decimal places if needed.

14. Using base-pairing rules, which sequence pairs with the DNA strand ATCTATGAT, read base by base in the same order?

    1. ATCTATGAT
    2. UAGAUACUA
    3. TAGATACTA
    4. TAGATAATA

15. In a canonical double-stranded DNA sample, adenine is 7% of all bases. Find the guanine percentage, assuming A = T and C = G. Round to 3 decimal places if needed. Answer in %.

16. Using base-pairing rules, which sequence pairs with the DNA strand AATGTATA, read base by base in the same order?

    1. TTACTTAT
    2. UUACAUAU
    3. TTACATAT
    4. AATGTATA

17. Using base-pairing rules, which sequence pairs with the DNA strand ACGATA, read base by base in the same order?

    1. AGCTAT
    2. ACGATA
    3. TGCTAT
    4. UGCUAU

18. How many RNA bases are in four codons?

19. In the simple Aa × Aa inheritance model with independent outcomes, the probability of aa is 1/4. Among 420 offspring, find the expected aa count, not a guaranteed outcome. Round to 3 decimal places if needed.

20. A fictional diploid organism has 4 chromosomes in a normal somatic nucleus. In the standard meiosis model, how many chromosomes are in a haploid gamete? Round to 3 decimal places if needed.