Which combination of X and Y chromosomes determines if someone is male or female?
Male - XY
Female - XX
In each human cell, what percentage of chromosomes comes from each parent?
50% ; one set of 23 from each parent
If someone has an extra (21) chromosome, what genetic disorder do they have?
A person with Klinefelter's Syndrome has which extra chromosome?
An extra gender chromosome (i.e. XXY)
A patient with Trisomy 13 Syndrome has which extra chromosome?
An extra (13) chromosome.
What are two types of cells that make up animals?
somatic cells and germ cells
what type of cells make up most of your body?
What type of cells will become gametes?
what process is used to make somatic cells?
What process is used to make gametes?
How many chromosomes are present in a human somatic cells?
How many chromosomes are present in human gametes?
Which process make IDENTICAL cells from an original cell?
Which process make genetically different cells
What organic molecule codes for proteins?
In what organelle is DNA located?
What type of organism has a nucleus?
What type of organic molecule does DNA code for ?
What type of organism does NOT have a nucleus to separate its DNA from the cytoplasm in the cell?
What is the abbreviation for diploid
What is the abbreviation for haploid?
A cell that has all of its chromosomes (2 of each) is described as......
are somatic cells diploid or haploid?
What types of cells are haploid?
What are 2 examples of gametes?
egg, sperm, pollen
Chromosomes that carry the same genes are called
Homologous chromosomes may have the same genes but different alleles (true or false)
in meiosis 1, what seperates
homologous pairs of chromosomes
In meiosis 2 what separates?
chromatids of individual chromosomes
what occurs during meiosis that ensures genetic variety?
crossing over and independent assortment
When do homologous chromosomes swap pieces?
When do homolgous chromosomes line up independently?
When does the diploid number become a haploid number of chromosomes?