DOWNLOADABLE EXTRAS Genetics and Evolution
13
4. Crossword
Across
Down
4. Holds the two DNA strands together. (2 words)
1.
XX
1
11.
Shows a certain trait’s inheritance over several
2. Another word for
generations and looks like a family tree. (2 words)
homozygous.
2
13. Pairs with Guanine in DNA.
3. Number of
chromosome pairs
14. The letter used to represent a dominant allele.
in a human.
(2 words)
3
5. Made up of
nucleotides.
4
5
6
7
6. The scientifi c word
for babies.
8
7. XX or XY
(2 words)
8. Another word for
9
10
differences.
9. Cell division that
produces sex cells.
11
10. Physical features
of an organism.
12. The alleles an
organism has.
12
13
14
5. Roundabouts
Find the 9 science terms related to this topic by solving the puzzle below. Each circle
Answers
Answers
(in alphabetical order)
(in alphabetical order)
contains a term (one or two words) which runs either clockwise or anti-clockwise
and can start anywhere in the circle. When you have worked out each answer, put
them in alphabetical order opposite.