A.
To draw: The pedigree in the given case.
Introduction: Cystic fibrosis is a hereditary disease generated due to the mutation in the cystic fibrosis transmembrane conductance regulator (CFTR) gene.
B.
To determine: The probability of the couple's first child to have cystic fibrosis
Introduction: Cystic fibrosis is the consequence of changes in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. About1,800 distinct mutations have been known that can induce cystic fibrosis. People acquiring two recessive CFTR alleles possess the disease.
C.
To determine: The probability of the second child being normal if the first child does have cystic fibrosis.
Introduction: Cystic fibrosis is an autosomal recessive disease, and this is the kind of condition one can acquire if both of the parents share a particular copy of a recessive gene. A recessive gene is one that can be concealed by a dominant gene.
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Chapter 2 Solutions
Introduction To Genetic Analysis
- What is the opening indicated by the pointer? (leaf x.s.) stomate guard cell lenticel intercellular space none of thesearrow_forwardIdentify the indicated tissue? (stem x.s.) parenchyma collenchyma sclerenchyma ○ xylem ○ phloem none of thesearrow_forwardWhere did this structure originate from? (Salix branch root) epidermis cortex endodermis pericycle vascular cylinderarrow_forward
- Identify the indicated tissue. (Tilia stem x.s.) parenchyma collenchyma sclerenchyma xylem phloem none of thesearrow_forwardIdentify the indicated structure. (Cucurbita stem l.s.) pit lenticel stomate tendril none of thesearrow_forwardIdentify the specific cell? (Zebrina leaf peel) vessel element sieve element companion cell tracheid guard cell subsidiary cell none of thesearrow_forward
- What type of cells flank the opening on either side? (leaf x.s.) vessel elements sieve elements companion cells tracheids guard cells none of thesearrow_forwardWhat specific cell is indicated. (Cucurbita stem I.s.) vessel element sieve element O companion cell tracheid guard cell none of thesearrow_forwardWhat specific cell is indicated? (Aristolochia stem x.s.) vessel element sieve element ○ companion cell O O O O O tracheid O guard cell none of thesearrow_forward
- Identify the tissue. parenchyma collenchyma sclerenchyma ○ xylem O phloem O none of thesearrow_forwardPlease answer q3arrow_forwardRespond to the following in a minimum of 175 words: How might CRISPR-Cas 9 be used in research or, eventually, therapeutically in patients? What are some potential ethical issues associated with using this technology? Do the advantages of using this technology outweigh the disadvantages (or vice versa)? Explain your position.arrow_forward
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