Genes, Chromosomes, And DNA Flashcards
What is it called when Living Things have similarities and differences
Inherited characteristics or environmental characteristics
What is the difference between a histogram and a bar chart
A histogram as connected boxes and a bar chart has distante boxes
What other characteristics are other examples of continuous varitation
Height, weight, hand span
What other characteristics are examples of a discontinuous variation
Characteristics with limited number of categories: Eye colour, left/right handed, tongue rolling, ear lobes attached or detached
What do chromosomes always come in
Pairs
How many cells do humans have
23 pairs of chromosome
What are chromosomes and genes?
Chromosomes carry all the information needed for the development of a new animal or plant. Different sorts of animals and plants have different numbers of chromosomes.
How are sex cells Inherited
After sexual reproduction Sex cells From parents pass on genetic information one half is from the mother, and the other half is from the father. This information controls how the body cells of the young animal or plant develop
Identify XX
XX means its going to be a girl
Identify XY
Xy means its going to be a boy
Describe your fingerprint
Arch
What is selective breeding
They choose the best plants and animals for breeding.
What is inside the nucleus
Chromosomes
Which cell in my body does not contain a nucleus
Red blood cell
Fruit flies have _ pairs of chromosomes
4
What does DNA stand for
deoxyribonucleic acid
How is genetic information passed on
After sexual reproduction Sex cells are made they pass on genetic information . This information controls how the body cells of the young animal or plant developed.
What is the independent variable for discontinuous variation?
Eyecolour
What is The independent variable or for continuous variation
The thing that you change
What is The dependent variable of a continuous variation
The thing that we measure
What is the dependent variable for discontinuous variation?
Number of pupils
When sperm cells are made in the _ they contain half the number of chromosomes
Testies
Egg cells are made in the _
Ovary
What determines the sex of a child, the egg or the sperm? Explain your answer
The sperm because the egg is X if another X sperm goes in it’s a girl but if the Y sperm enters it’s a boy
What are gametes
a reproductive cell of an animal or plant.
What is an allele
matching genes; one from our biological mother, one from our biological father.
What are three advantages of genetic modified crops?
ability to grow in salty soil,
enhanced flavor. longer shelf life and therefore less waste.
Three disadvantages of Genetic modified crops
Cancer
Allergic reactions
Changes in human DNA
