Show:
Genetics
Heredity
Reproduction
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
Sexual reproduction produces offspring that are genetically _____________ to the parents.
Different but Similar
100
Some alleles can be hidden or covered up by another allele. The alleles that are hidden are called-
Recessive Alleles
100
How are traits passed from parent to offspring?
Through genes during reproduction
200
Where are genes located?
On chromosomes or in DNA.
200
Who first studied heredity and the passage of traits from one generation to the next?
Gregor Mendel
200
Asexual reproduction produces offspring that are genetically ____________ to the parent.
Identical
200
What is the punnett square used for?
To determine the outcome of genetic crossings.
200
Name two traits that could be inherited from a parent?
Examples: hair color, eye color, height, skin color, freckles, etc...
300
What are the threadlike structures of organized DNA that carry genes during mitosis and meiosis called?
Chromosomes
300
What type of organism did Gregor Mendel use to first study heredity?
Pea Plants
300
If you are studying a population of genetically identical individuals, you can conclude that these individuals reproduce how?
Asexually
300
A blue chicken (BB) is crossed with a blue chicken (BB). What percentage of offspring will be blue?
100%
300
Why does a Punnet Square use capital and lowercase letters?
Capital = Dominant Trait Lower Case = Recessive Trait
400
The difference between acquired and inherited traits
inherited traits are those you are born with, acquired traits are learned or through physical changes
400
The physical trait observed in an offspring is known as it's -
Phenotype
400
For some traits, only one copy of a particular gene is needed to show a given trait. These alleles are referred to as-
Dominant Alleles
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 pairs
500
Cell division for sexual reproduction produces gametes through a process called ________. (Hint: NOT Mitosis.)
Meiosis
500
Long ears are dominant (E) in rabbits. If one parent is homozygous dominant for the long ear trait and the other homozygous recessive (e), what is the only possible genotype of the offspring?
Ee
500
Two Grey rabbits have four offspring. Three of the offspring are grey and one is red. What does this tell you about the parents' genes for fur color?
Grey is dominant and red fur is recessive. Both parents are heterozygous.