Meiosis vs. Mitosis
1 set of chromosomes
Haploid
How many chromosomes are in a human body cell?
46
Version of a gene
Allele
1. The acronym to remember which variable is on each axis.
2. What does it stand for?
DRY MIX
Dependent on Y, Independent on X
Father of genetics
Gregor Mendel
2 sets of chromosomes
Diploid
The random distribution of homologous chromosomes during meiosis.
Independent Assortment
1. Genetic makeup
2. Physical characteristics
Genotype
Phenotype
If an organisms spleen cell has 26 chromosomes, how many will its sperm cells have?
13
What is the only way an offspring can show the recessive trait?
If they have two recessive alleles, homozygous recessive.
Reproductive cells (sperm and egg) are known as
Gametes
Portions of one chromatid are broken off and exchanged with another.
Crossing over
Two identical alleles for a gene
Homozygous
Golden ticket
FREE POINTS
Black fur is dominant to gray fur. If a homozygous gray fur female mates with a homozygous black fur male, what is the probability of their offspring having gray fur?
0%
All body cells except for sperm and egg
Somatic Cells
The random joining of two gametes
Random fertilization
Two different alleles for a gene
Heterozygous
If an organism's haploid number is 12, its diploid number is
24
Identify the 2 genotypes that will show the dominant trait.
AA, Aa
Homozygous dominant, heterozygous
Name the end result of meiosis and mitosis
Meiosis: 4 genetically different cells
Mitosis: 2 genetically identical cells
How could a child receive a recessive trait if both parents show the dominant trait?
Both parents are heterozygous
Give me an example of all three genotypes.
Heterozygous: Aa
Homozygous dominant: AA
Homozygous recessive: aa
If an organism's bone cell has 48 chromosomes, how many will it's egg cells have?
24
Which parental genotypes would produce only "aa" offspring?
aa x aa