a) segregation of alleles during anaphase I
b) probability
Explain how the following are involved in separating Alan and amanda alleles forever:
a) segregation of alleles during anaphase I b) probability Two alleles, Alan and amanda, come to you separately, wanting you to write their life story (because they're alleles....they can't write. You can!). They want you to start at a very important time in their lives - prophase I of meiosis I. Starting at that point, write the life story of Alan and amanda, from prophase I until they end up in a gamete (egg or sperm).
In science teachers, nerdy (N) is dominant to non-nerdy (n) and exceedingly good-looking (G) is dominant to plain-looking (g).
a) A homozygous nerdy, plain-looking male science teacher marries a heterozygous nerdy, good-looking female. Write the cross. b) What is the probability of this couple having a child that is homozygous dominant for nerdiness and heterozygous for looks? c) What is the probability of this couple having a child that shows the recessive phenotype for both traits? a) From the cross below, calculate the probability that an organism will have a homozygous recessive genotype.
AA x aa b) From the cross below, calculate the probability that an organism will show the dominant trait for the first trait and the recessive trait for the second trait. AABb x AaBb Why does half od your DNA come from each parent?
When you are finished answering the question, fix the Objective #1-2 progress check that you took on Friday. Didn't take it? Raise your hand and Mrs. E will give you one to take now. Get up and go get a whiteboard, and eraser, and a marker. (By the way, my markers better be returned at the end of the period...some of the new ones have already gone missing! Please stop stealing my supplies!)
On your whiteboard, do all parts of the dihybrid cross problem below: An aquatic arthropod called a Cyclops has antennae that are either smooth or barbed. The allele for barbs (B) is dominant over smooth (bb). In the same organism Non-resistance to pesticides (N) is dominant over resistance to pesticides (nn). A Cyclops that is resistant to pesticides and has smooth antennae is crossed with one that is heterozygous for both traits. Show the genotypes of the parents. a) Write the cross. b) Do the Punnet square. c) Write the phenotypic ratio. (Write this as the answer to this journal!) In humans, polydactylism (having an extra finger on each hand) is dominant to the typical 5-finger arrangement. Tongue rolling is dominant to not being able to roll one’s tongue. A man who is homozygous for 5-fingers and who cannot roll their tongue has children with a woman who is heterozygous for polydactylism and tongue rolling.
a) Write the cross. b) Write the gametes for each parent. c) Describe how you would determine the phenotypic ratio from this cross. Explain why you must "FOIL" the parent genotypes to get the allele combinations that go on each side of a dihybrid Punnet square.
a) Explain how homozygous dominant and homozygous recessive are similar.
b) Explain how homozygous dominant and homozygous recessive are different. Write the genotypic ratios for the crosses below:
a) Aa x aa b) EE x Ee Write the instructions for how to calculate the ratios below from a monohybrid cross:
a) genotypic ratio b) phenotypic ratio a) Explain how you create a Punnet square from this cross: Aa x Aa.
b) Explain WHY you do what you do when you create the Punnet square from letter a. a) Define genotype and phenotype.
b) Write a difference between genotype and phenotype from the definitions you wrote in part a. a) What's the difference between genotype and phenotype?
b) How are genotype and phenotype connected? c) How was your phenotype determined when you were a zygote? d) How did you get all 46 of your chormosomes? Write level 9 differences for EACH set of terms below:
a) genotype and phenotype b) homozygous and heterozygous c) dominant allele and recessive allele Every cell in your body has all of the genes for all cell functions. If that's the case, how does a muscle cell know only to do muscle cell things?
We already know that proteins do everything in cells. Now that you've read more about specific functions of proteins, describe what that "everything" really means by explaining the many functions of proteins.
a) Transcribe this piece of DNA: TACAATCGC
b) Translate this piece of mRNA: AUUCUCAGG List TWO ways transcription and translation are connected.
Explain, using NUMBERED steps, what happens in:
a) Transcription b) Translation Explain (in your own words!) what each type of RNA below does during protein synthesis:
a) rRNA b) tRNA c) mRNA |
Journal GuidelinesEveryone must answer the daily question. If you don't know, guess! I need thoughtful answers, not necessarily correct ones. You must put your REAL name on your response. No email is needed. Inappropriate names or responses will receive and automatic discipline referral. Archives
April 2015
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