Meiosis Phases
What separates in Meiosis Anaphase 1?
Homologous chromosomes
How many offsprings look like the parents if the parent genotypes are Aa Aa?
3/4
What does complete dominance refer to?
Dominant vs. Recessive
What are carriers?
Heterozygotes. Individuals who carry the recessive allele but display the dominant allele.
What is the organelle called that is responsible for the formation of spindle microtubules?
Centrosome
What is something that experiences codominance that is in the notes? (hint: made in bone marrow)
Blood types!!
Define Epistasis
When the expression of a gene at one locus alters the phenotypic expression of a gene at a second locus.
What plant did Mendel use to discover the basic principles of heredity?
Pea Plants
What phase includes cytokinesis?
Telophase
If there is incomplete dominance, what will the offspring of a EbEb blue elephant and a EyEy yellow elephant?
A green elephant!
What is a testcross?
The breeding of a mysterious genotyped individual with a homozygous recessive individual.
What connect two sister chromatids together and is the site where the spindle fibers grab onto during metaphase?
Kinetochore
What phase does crossing over happen?
Prophase 1
What would happen if a codominant allele was inherited by an offspring that coded for green arms and another allele that coded for blue arms?
Their arms would have blue and green splotches.
Define law of independent assortment.
each pair of alleles segregates independently of any other pair of alleles during gamete formation.
alleles
What is the difference between meiosis and mitosis? What is the final outcome? How are each useful?
Meiosis makes gametes and has 2 division; mitosis makes body cells and has 1 division. Mitosis allows for the body to recover from damage while meiosis allows for the formation of babies.
What is the phenotypic ratio of a dihybrid cross?
9:3:3:1
Define pleiotropy
When a gene has multiple phenotypic effects. Like sickle cell effecting blindness, liver failure, and heart attack.
What disease is inherited dominantly that leads to the degeneration of the nervous system?
Huntington's disease