Dna Flashcards
What is dna contained in
Chromosomes
Where is Dna found
In the nucleus
What’s a gene
A unit of inheritance
Different forms of the same gene are called what
Alleles
Genetic disorders are
Inherited genes from your perents
The genetic information is called its
Genome
In meiosis …………………and ………………………. gametes Are produced
Male and female gametes
In meiosis …….. chromosomes Come from each parent
23 chromosomes
In fertilisation the ……………. And the egg join to form a ………….
Sperm
Zygote
Mitosis produces
2 new cells identical to each other and to the parent
Mitosis occurs when
More cells are needed
Mitosis and meiosis are
Two ways cells are produced
In meiosis cells are
Split to make new cells with half the usual chromosomes to produce gametes for reproduction
In the growth part of the cell cycle ………… Increases inside the cell
Organelles
In meiosis
The chromosomes are copied
The cell divides twice forming 4 gametes
In mitosis
2 new cells form
The cell they came from and all cells produced are identical
In males The two sex chromosons are
different they are XY
In females the sex chromosons are
XX
Gametes contain ……. of g………….. information
One set of genetic information
Body cells contain ………….. set of genetic information
Two sets of Genetic information
In sexual reproduction cells divide by
Meiosis
In meiosis the chromosons are ……….. and the ……. divides ………..
The chromosomes are copied
The cell divides twice forming 4 gametes
In mitosis
2 new cells form
The cell they came from and all cells produced are identical
In females the ……. are ………………….. they are ………….
The two sex chromosons are the same they are XX
Gametes contain …………… of genetic information
One set of genetic information
Body cells contain
Two sets of Genetic information
In sexual reproduction cells divide by
Mitosis
In body cells there are ….. chromosons
46
In a gamete there are ……. chromosons
23
