Show:
Genetics
Heredity
Natural Selection
Punnet Squares
Misc
100
What is genetics?
The study of heredity.
100
What is heredity?
The passage of genetic instructions (traits) from parent to offspring.
100

Who was the naturalist who observed finches and made our working theory of natural selection

Charles Darwin

100
Some genes can be hidden or covered up by another. These are considered to be-
Recessive
100
How are traits passed from parent to offspring?
Through genes during reproduction
200
Where are genes located?
In the chromosomes
200
Who first studied heredity and the passage of traits from one generation to the next?
Gregor Mendel
200

Define Natural Selection

the process through which populations of living organisms adapt and change to their environment

200
What is the punnet square used for?
To determine the outcome of genetic crossings.
200

What kind of adaptation is venom in a snake?

Physiological adaptation

300
What are the threadlike structures of DNA that carry genes called?
Chromosomes
300
What type of organism did Gregor Mendel use to first study heredity?
Pea Plants
300

The process of controlling the desired traits in a population - human controlled

Selective Breeding

300
A black chicken (BB) is crossed with a black chicken (BB). What percentage of offspring will be black?
100%
300
Why does a Punnet Square use capital and lowercase letters?
Capital = Dominant Trait Lower Case = Recessive Trait
400
Inherited traits that children get from their parents come from-
Genes
400
The physical trait observed in an offspring is known as it's -
Phenotype
400

What is it called when an organism changes something about themselves to survive and reproduce

Adaptation
400
Having dimples is dominant (D). Not having dimples is recessive. (d) Both parents are heterozygous for the dominant trait. What percentage of the children will NOT have dimples?
25%
400
How many parents are involved in asexual reproduction?
One
500
What do we call the genetic make up of the individual, represented by a set of letters?
Genotype
500
How many chromomsomes do humans have?
46 or 23 pair
500

In giraffes, what would be the reason that only long necked individuals will survive?

They can reach leaves on tall trees

500
Long ears are dominant (E) in rabbits. If one parent is homozygous dominant for the long ear trait and the other homozygours reccessive (e), what is the only possible genotype of the offspring?
Ee
500

What is it called when, in a cross, both traits show through, mixing the traits?

Incomplete dominance