Genetics
A cross in which the parents are heterozygous for the two studied traits.
What is a dihybrid cross?
This is a disorder in which some cells have lost the ability to control their growth and division.
What is cancer?
During this phase of mitosis, nuclear division is completed and the nuclear membrane reforms.
What is telophase?
What is 23 chromosomes?
Alternate forms of a gene are
What are alleles?
During synthesis of interphase, DNA replicates to form sister chromatids joined by this structure.
What is a centromere?
After replication, a chromosome is composed of two identical parts called this.
What are sister chromatids?
During this phase, the sister chromatids separate and therefore 4 daughter cells each have only one copy of each gene.
What is meiosis II?
An organism's actual gene makeup, often designated by letters like "Aa" or "BB" is called this.
What is a genotype?
During which part of the cell cycle is cell growth and replication of organelles most significant?
What is G1?
If a cell with 46 chromosomes undergoes mitosis, the two cells that result from the division will have this many molecules of DNA.
What is 46?
Each gamete has only one allele for each trait because gametes are always this.
What is haploid?
If a pea plant shows a recessive phenotype, its genotype must be composed of two ....
What is two lower case letters?
The cell cycle includes all of these stages - listed in this order:
What is G1, S, G2, M, and cytokinesis?
What is metaphase?
If a sperm cell contains 8 chromosomes, then it comes from an animal that has this many chromosomes in its body cells.
What is 16?
If an organism has the genotype Tt, it is said to be ...
What is heterozygous?
Programmed cell death is called this.
What is apoptosis?
In mitosis, sister chromatids separate during this phase.
In a diploid cell, chromosomes pair during meiosis. These pairs are called ........