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1. A couple who are both carriers of the gene for cystic fibrosis (CF) have two children who have cystic fibrosis. What is the probability that their next child will have cystic fibrosis? What is the probability that their next child will be a carrier of cystic fibrosis?
2. Black coat color (B) in rats is dominant to brown coat color (b). There is a cross between a homozygous recessive and a heterozygote. What is the chance of getting an offspring with the homozygous recessive phenotype?
3. Red flowers (R) in snapdragons are dominant over the recessive white flowers (r). Heterozygotes have pink flowers, whereas the two homozygotes have red flowers or white flowers. Plants with red flowers are crossed with plants with white flowers. What proportions of the offspring will have pink flowers?
4. Huntington's is an autosomal dominant disease. Work a cross between a homozygous recessive mother (hh) and a heterozygous father (Hh). The offspring would have very different outcomes from an autosomal recessive disorder. What are the possible genotypes and phenotypes of children born from this union?
5. Mendel wanted to cross true breeding tall plants (TT) with true breeding short plants (tt). Would it be possible to produce offspring that were true breeding for either of these characteristics if these two plants produced offspring?
Briefly present the significance and clinical usage of neuromuscular blocking agents and describe the difference between centrally active muscle relaxants and directly acting skeletal muscle relaxants.
Determine what genotype frequencies would you expect to see in the next generation if there is no evolution.
A species of tree has a very large genome consisting of 2.0x10^10 base pairs of DNA per diploid genome. Assume that each diploid cell contains 10 chromosomes of similar length.
An individual with Turner's syndrome and afflicted with the X-linked recessive trait nystagmus is produced by parents that are both phenotypically normal. The individual has a brother that is also afflicted with nystagmus and a brother that is phe..
Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.
A cheeseburger contains bread, meat and cheese. Which portion of the cheeseburger will enter the process of cellular respiration at the beginning?
Below is a diagram of the reaction catalyzed by the enzyme papain (a cysteine protease). Label all of the catalytic mechanisms at work at each step.
Assume if all 3-Bithorax complex genes are deleted, how you expect segments of larva to develop? The segments are written in anterior to posterior order.
The genes of the lactose operon
Define neurotransmitters and describe their role in neurotransmission. Discuss how they are released, how they affect receiving neurons, and how they are removed from receptor sites.
How has the peony plant evloved to cover the bud with the waxy coating meaning how did it come to become this way? Why and how the evolution from a non-waxy coating (if this ever existed) to a waxy coating take place?
what happens to a primary pit field as a meristematic cell differentiates into a sieve cell ( what does it become and how)
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