A | B |
The ___produced by each parent are shown along the sides of a punnett square. | gametes |
genotype Aa | heterozygous |
Mendel's law of segregation | factors (alleles) that control traits seperate and only 1 factor from each pair are passed to the offspring. |
The passing on of traits from parents to offspring | heredity |
Cells containing two alleles for each trait | diploid |
The gamete that contains genes contributed only by the mother | an egg |
A couple has two children, both are girls. What's the chance the next child will be a girl? | 50 |
Genes located on homologous chromosomes have alternate forms of a trait. The alternate forms are | alleles |
Mendel crossed two P generation peas: tall and short. Why were the F1 all tall? | Gene for tall was dominant over short |
Organsim's dipolid number is 14. What's the haploid number? | twelve |
An organism's haploid number is 23. What's the diploid number? | 46 |
Chromosomes form tetrads | Prophase I of Meiosis |
Crossing over | Prophase I of Meiosis |
Meiosis | Four genetically different haploid cells |
Linked genes | Never seperate |
The closer genes are located on a chromosome | Increases likelyhood for linked together |
Two P generations crossed for height. Expected outcomes of tall plants in 100 tries? | 75 |
Two P generations crossed for height. Expected outcomes of tall short plants in 100 offspring? | 25 |
Genetic variation | Crossing over in prophase I, lining up of homologous chromosomes Metaphase I |
Reduction division | Meiosis |
RRYy or RrYy | Phenotypically round and yellow |
rrYY or rrYy | phenotypically wrinkled yellow |
Recessive traits | Only when organism has two recessive alleles for a trait. |
AaBbCc | Polygenic trait-average |
polygenic trait | more than one gene controlls for a trait |
hair color/skin color | polygenic trait |
multiple alleles | more than two variations for a trait, however, only two alleles will be used |
codominance | Offspring exhibit both characteristics of parents |
Incomplete dominance | offspring are a blend between two parents. |
R'R' X W'W' | Pink. Incomplete dominance |
BB X WW | Checkered chicken. Codominance. |
Graph with only two phenotypes | Mendelian Dominant |
graph that looks like a bell | polygenic traits |
AABBCC--plant height | Produce a very tall plant |
aabbcc--plant height | Produce a very short plant |