The CLONE wars:
MITOSIS
MITOSIS
At the end of mitosis, this is the number of cells produced.
What are 2 identical cells?
At the end of meiosis, this is the number of cells produced.
What are 4 unique cells?
What is a mutation?
A mutation is when something causes DNA to change usually producing a different trait
The set of alleles that an organism inherits and determine its phenotype.
What is genotype?
The scientist responsible for the study of genetics.
Who is Gregor Mendel?
Human cells have 46 chromosomes. At the end of mitosis, each new human cell has this number of chromosomes.
What are 46 chromosomes?
Human cells have 46 chromosomes. At the end of meiosis, each new human cell has this number of chromosomes.
What are 23 chromosomes?
What is a mutagen?
Something that causes a mutation
What we see or what traits is expressed is referred to as this.
What is phenotype?
A tool used to predict possible offspring.
What is Punnett Square?
This is the phase that occurs BEFORE mitosis begins.
What is interphase?
During interphase of MEIOSIS these two things happen.
What is 1. DNA replicates and 2. crossing over occurs?
Name three mutagens
X-rays, UV rays from the sun, mercury, lead, drugs, chemicals
When an organism inherits two different alleles, such as Hh, the genotype is referred to as this.
What is heterozygous?
________ alleles exhibit their effect only when both chromosomes have the allele.
What is recessive?
The nuclear envelope ___________ during prophase.
Breaks apart
The process in which parts of homologous chromosomes switch places.
What is crossing over?
What is post-birth?
When an organism inherits two alleles that are recessive, such as hh, the genotype is referred to as this.
What is homozygous recessive?
If you crossed BB with bb, all of the kids would have this genotype.
What is Bb?
Describe what happens during metaphase. Use as many of the following terms as you can: microtubules, centromeres, chromosomes
The microtubules attach to the centromeres of the chromosomes, and the chromosomes line up in the middle of the cell.
Which phases are technically part of mitosis and which phases happen before and after mitosis?
Mitosis: PMAT Prophase, Metaphase, Anaphase, Telophase
Before mitosis: Interphase
After mitosis: Cytokinesis
A pregnant woman consumes fish with high levels of mercury. This causes no permanent harm to her but a mutation occurs in the fetus. Which stage of mutation does her fetus experiencing?
What is post-fertilization?
Inherited traits that children get from their parents come from-
What are genes?
Two parents are heterozygous for a certain trait. What are the odds of them creating a homozygous recessive offspring?
There will be a 25% chance of a homozygous recessive offspring.