Download Biology genetics hw Due: 26th November 2013 Name

Biology genetics hw
Due: 26th November 2013
What the letters DNA stand for (d)
Name: …………………………………………
During mitosis the cell splits in
……..after copying all the DNA (h)
There are 23 pairs of these in most
human cells (c)
Part of the cell where chromosomes are
found (n)
Type of cell division used to repair
cells or grow new cells (m)
One of these is made from many
thousands of different genes (c)
Sperm and/ or egg cells (g)
Man who first recorded the pattern in
which traits are passed between
generations (M)
Small section of DNA that codes for a
particular trait or characteristic (g)
2 reasons Mendel’s work was not
recognised til after his death.
How DNA is used to work out paternity
disputes and solve crimes (DNA f)
Type of plants used by Mendel in his
experiments (p)
The structure of DNA is a double….
(h)
Mendel’s “inherited factors” are now called
………….. / ………….. (g / c)
The type of molecule which is built
using the DNA code as instructions (p)
Part of the cell which uses the DNA
code to build proteins (r)
Type of cell that only has 23 single
chromosomes, instead of 23 pairs (g)
The 2 cells formed from mitosis are
genetically ………….. (i)
During mitosis all the DNA inside a
cell is ……………… (c)
2 reasons scientists may be asked to
produce a DNA fingerprint
(20 marks)
When scientists look at dividing cells under a microscope, they can
see strands that contain a chemical called DNA.
A photograph of these strands can be cut up and re-arranged.
The diagram shows an arrangement of the strands from a human cell.
1.
What name is given to the strands containing DNA shown in the
diagram? alleles
chromosomes
genes
2.
How can you tell from the diagram that the cell was taken from
a man not a woman?
3.
How can you tell from the diagram that the strands are from a
body cell and not from a gamete?
3.
Which part of the cell would these strands have been found in?
Lexie Munro 2013
(4 marks)
Total………………. (max 24 + 5 for stretch)
Due: 26th November 2013
Biology genetics hw
Name: …………………………………………
STRETCH
Explain why every cell in your body has identical DNA. You may want to include some of these words in
your answer
Mitosis
copies
splits
chromosomes
growth
(5 marks)
Lexie Munro 2013
Total………………. (max 24 + 5 for stretch)