Page 191 - Big Ideas Year 10 sciPAD 2025
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SCIPAD - BIG IDEAS - BOOK 2
THE BASIS OF HEREDITY
End of Chapter Crossword
Across
4. The differences between individuals of the
same species.
5. XY chromosomes mean you are one of these.
6. Scientist who wrote “On the Origin of
Species”.
11. Reproduction involving only one parent.
12. Female sex cells.
13. The height of humans shows this type of
variation.
14. The remains of ancient plants and animals.
17. Name of the process when a sperm fuses
with an egg.
18. These can be described as ‘attached’ or
‘free’.
19. Vestigial feature of a kiwi.
22. A type of ‘selection’ where an organism’s
environment affects the survival and
reproduction of the organism.
24. A body part of an organism that tends to be
reduced in size and does not seem to have a
function.
26. Made up of a phosphate, sugar and a base.
27. A section of DNA that holds the instructions
for a certain characteristic/trait.
28. Describes the shape of DNA.
29. If coat colour in mice is controlled by the
allele B (black) and b (white), then a mouse
with the alleles Bb will be...
Down
1. Pacific islands made famous by Darwin and
its finches.
2. The name for a genetic condition where a
person’s thumb is able to bend backwards
around 90°.
3. You have 46 of these in every cell in your
body.
7. A type of ‘selection’ where humans choose
which traits are passed on to offspring.
8. A permanent change in the base sequence
of DNA.
9. A picture of chromosomes used to check for
abnormalities.
10. A type of ‘square’ used to find probabilities
from genetic crosses.
13. Making a copy of a living organism by using
only its DNA.
15. The ‘A’ in DNA.
16. Another word for genetic characteristics.
17. XX chromosomes mean you are one of these.
20. Chromosomes are found in this part of a cell.
21. Abbreviation for deoxyribose nucleic acid.
23. Alternative version of a gene.
25. Male sex cell.
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