Mendel
Before Mendel's experiment, people explained inheritance from both parents with this idea.
What is blending inheritance?
A feature that has different forms in a population.
What is a trait?
What an organism looks like, that can be determined by genotype.
What is phenotype?
Chromosomes that carry the same set of genes, although they may have different alleles for each gene.
What are homologous chromosomes?
The number of haploid cells formed from the original diploid cell.
What is 4.
This is one internal environmental condition that can influence a person's height.
What is nutrition?
The cells that have homologous pairs of chromosomes.
What are diploid cells?
Punnett squares are used to predict this.
What is possible genotypes for a cross between parent organisms?
The cells do not have homologous pairs of chromosomes.
What are haploid cells?
This happens the first time the nucleus divides during meiosis.
What is the separation of homologous chromosomes?
The passing of traits from parents to offspring.
What is heredity?
These chromosomes have the same sequence of genes.
What are homologous chromosomes?
The possible genotypes between this cross:
PP x Pp
What are PP and Pp?
An organism with one dominant and one recessive allele for a characteristic?
What is heterozygous?
46 chromosomes can be found in this type of cell.
What is a human body cell or human diploid cell?
Sperm from one plant fertilizing the eggs of the same plant.
What is self-pollination?
This type of trait disappears in the first generation and reappears in the second generation.
What is a recessive trait?
The probability that offspring from the cross
PP X Pp
will receive two P alleles?
What is 50%?
A set of inherited instructions that can influence one or more traits.
What are genes?
The number of chromosomes a human offspring receives from the biological father?
What is 23 chromosomes?
A plant that self-pollinates and produces offspring that have all the same trait.
What is a true-breeding plant?
An organism with two dominant or two recessive alleles for a characteristic.
What is homozygous?
The P is a dominant allele for purple flowers and p is a recessive allele for white flowers, these are the possible phenotypes for the cross:
PP x Pp
What are purple flowers?
During this stage of meiosis, the chromosomes separate from their homologous partners and move to opposite ends of the cell.
What is Anaphase I?
The phase when two diploid cells become four haploid cells.
What is Meiosis II?