Genetics Flashcards
What does genetics have a profound effect on?
Genetics has a profound effect on the development of each individual child.
Which events are usually due to genetics?
Events, such as the timing of a child, reaching puberty are usually due to genetics. however, environmental factors such as nutrition can have an impact
The interaction of what factors will impact how a child develops?
The interaction of hereditary factors with a child’s environment shapes how that child will develop
Where does a child’s genetic information develop from?
A child’s genetic information develops from their parents’.
Where does the embryo’s genetic code come from?
When a child is conceived, both the father’s sperm and the mother’s egg contains chromosomes. The genes in these chromosomes are made of DNA that contain the embryo’s genetic code.
How much chromosomes do each cells have?
All cells in the body, except reproductive cells, have 46 chromosomes
What is a genotype?
A genotype is the genes a person has inherited
What is a phenotype?
A phenotype is how the genes are exhibited
Examples of a phenotype:
Physical traits, such as height and eyecolour are a phenotype
What can genes be?
Some genes are dominant, and some are recessive. A child with one brown eyed parent, and one blue eyed parent are likely to have brown eyes, as the brown eyed gene is the dominant one
Do genes always control the development of a child?
Genes do not always control the development of a child. A child with tall parents could be smaller due to poor nutrition.
What can genetics cause some children to be born with?
Genetics can cause some children to be born with a genetic abnormality, such as fragile X syndrome.
What is Fragile X Syndrome?
Fragile X Syndrome is when part of the X chromosome is attached to other chromosomes by a very fragile string of molecules.
What is the most common chromosome disorder?
The most common chromosome disorder is Down’s Syndrome, this is when the child has three chromosomes at the site of the 21st chromosome instead of two
What physical problems can Down’s Syndrome cause?
Down’s Syndrome can cause some physical problems, such as heart defects and hearing problems.
