Genes & DNA
Heredity
Simple inheritance
Punnet Squares
Misc
100

What part of the cell contains DNA? 

The nucleus 

100
What is heredity?
The passage of genetic instructions (traits) from parent to offspring.
100

What is an allele?

Different versions of the same gene. 

An organism gets two alleles of each gene – one from its mother and one from its father.

100
Some genes can be hidden or covered up by another. These are considered to be-
Recessive
100

A genotype in which the two alleles are different 

Heterozygous 

200

What does DNA stand for? 

deoxyribonucleic acid

200
Name two traits that could be inherited from a parent?
Examples: hair color, eye color, height, skin color, freckles, etc...
200
The physical trait observed in an offspring is known as it's -
Phenotype
200

What do we call a pair of alleles (represented by two letters) that influence the appearance of a particular trait?

Genotype

200

How many cells would be present after 3 cycles of mitosis? 

8 

300

What is a gene?

A gene is a section of a DNA molecule that provides instructions for building a specific protein.

300
What type of organism did Gregor Mendel use to first study heredity?
Pea Plants
300

A genotype in which the two alleles are the same

homozygous

Example:  (GG) or (gg) 

300
A black chicken (BB) is crossed with a black chicken (BB). What percentage of offspring will be black?
100%
300

A "misspelling" in the sequence that makes up a gene. Some can be harmful, while others are harmless. 

mutation 

400

What is mitosis? 

A type of cell division that produces cells for growth and repair

400
How many chromomsomes do humans have?
46 or 23 pair
400

A version of a gene that is only expressed when two copies are present

recessive allele

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
Why does a Punnet Square use capital and lowercase letters?
Capital = Dominant Trait Lower Case = Recessive Trait
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