Petunias normally have purple flowers. Suppose you identify a recessive mutant that has white flowers, and another student in class also identifies a recessive mutant with white flowers. How would you determine whether your two mutants have defects in the same gene or different genes?

Petunias normally have purple flowers. Suppose you identify a recessive mutant that has white flowers, and another student in class also identifies a recessive mutant with white flowers. How would you determine whether your two mutants have defects in the same gene or different genes?

Name: Petunias normally have purple flowers. Suppose you identify a recessiv
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Description: Petunias normally have purple flowers. Suppose you identify a recessive mutant that has white flowers, and another student in class also identifies a recessive mutant with white flowers. How would you determine whether your two mutants have defects i

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter10: From Proteins To Phenotypes

Section: Chapter Questions

Problem 17QP: Knowing that individuals who are homozygous for the GD allele show no symptoms of galactosemia, is...

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How can you determine whether a phenotype such as reduced eyes in fruit flies is due to a recessive mutation or is a phenocopy?
Eye colors are passed down through generations, but sometimes genetic variations can lead to surprising results in eye colors (dark eye color, still rocks!?) Some examples are found below. Is there truth behind the following? Provide explanations for your answer. Two parents with blue eyes cannot have a brown-eyed child and vice-versa. Eyes with more than one color stems from parents with two different eye colors. People with violet eyes are mutants. People with red or pinkish eye color can have dark-eyed parents.
Most mutations in a diploid organism are recessive. Why?
Red–green color blindness in humans is due to an X-linked recessive gene. A woman whose father is color blind possesses one eye with normal color vision and one eye with color blindness. a. Propose an explanation for this woman’s vision pattern. Assume that no new mutations have spontaneously arisen. b. Would it be possible for a man to have one eye with normal color vision and one eye with color blindness?
Let’s suppose a genetic disease is caused by a mutantallele. If two affected parents produce an unaffected offspring, can themutant allele be recessive?
A couple who are both heterozygous for an autosomal recessive mutation that is narrowly expressed and fully penetrant are planning on having three children. What is the probability that one their children will be normal (unaffected) and two children will have the recessive mutant phenotype? Show your work. Please answer this question using the Bayes’ Theorem
How can you use this piece of information to help you explain to your friends what is the significance of mutations in the emergence of new genetic properties (alleles) that may result (or not) in new phenotypic characteristics? (Recall that not all SNPs affect phenotype.)
How can mutations cause changes to the traits? Explain using the following steps:1- DNA 2- Gene 3- Protein 4- Traits We need one explanation for the normal side and one for the mutation side. Can you explain in a few sentences how the change in the structure of the gene affects the function of the corn plant?
What was the hypothesis of the X-linked cross conducted in the lab (between white-eyed female and re-eyed male) with the white mutation in Drosophila and written up in your lab report? A All female offspring will inherit red eyes from their mother because the mutation is X linked recessi B All female offspring will inherit white eyes from their mother because the mutation is X linked recessive. C All male offspring will inherit white eyes from their mother because the mutation is X linked recessive. D All male offspring will inherit red eyes from their mother because the mutation is X linked recessive. E All male offspring will inherit white eyes from their mother because the mutation is X linked dominant.
Imagine that you caught a female albino mouse inyour kitchen and decided to keep it for a pet. A fewmonths later, while vacationing in Guam, you caughta male albino mouse and decided to take it home forsome interesting genetic experiments. You wonderwhether the two mice are both albino due to mutations in the same gene. What could you do to find outthe answer to this question? Assume that both mutations are recessive.
This research exploited the principles of Mendelian genetics combined with the MCR technique to genetically manipulate fruit flies. Now, suppose you do a similar experiment. You perform two crosses: one that allows for Mendelian patterns of inheritance, and another that uses MCR with CRISPR-Cas9 to genetically edit the eye color of fruit flies. In fruit flies, the gene for eye color is located on the X chromosome. Red eyes (wild type, w+) are dominant to white eyes (mutant, w-). Let’s see how well you can predict genotype and phenotype ratios resulting from the two crosses. Genetic cross 1 (without MCR): Cross between a white-eyed male and a homozygous red-eyed female. Genetic cross 2 (with MCR): Cross between an MCR-element (carries the CRISPR-Cas9 construct) white-eyed male and a homozygous red-eyed female. Keep in mind, this technology converts a heterozygous genotype to a homozygous recessive genotype. Drag the labels to the table to fill in the genotypic and phenotypic ratios.
Identical twins each carry the same genome, but over time, can develop different phenotypes. How can you explain this?