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

What is homozygous?

When an individual has two of the same allele

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

What is heterozygous?

When an individual has different alleles



200

What is a dihybrid cross?

A Punnett Square taking a look at two different traits

200

If we cross a black and white dog, and get a grey dog, this was the result of what?

Incomplete dominance

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

AA is an organisms _________________ and is considered to be ______________________.

Genotype; Homozygous

300

What is crossing over?

process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other.

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

For some traits, only one copy of a particular gene is needed to show a given trait. These genes are referred to as-

Dominant

400

What is the Phenotypic Ratio of a homozygous dominant and a homozygous recessive individual crossing?

4:0 Dominant to recessive 

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

When does crossing over occur during reproduction

Meiosis

500

What is the phenotypic ratio of the offspring that come from two individuals heterozygous for both traits in a dihybrid cross Punnett Square

9 double dominant : 3 Dominant recessive : 3 Dominant recessive : 1 double Recessive

500
Two dark brown rabbits have four offspring. Three of the offspring are dark and one is white. What does this tell you about the parents' genes for fur color?
Dark brown is dominant and white fur is recessive. Both parents are heterozygous.