2. (10 points) Fuzzems are small hamster-like rodents that are common genetic su

Question

2. (10 points) Fuzzems are small hamster-like rodents that are common genetic subjects. Ok, not really Fuzzems comple in this course. One of the added perks in fuzzem research is the consta easant aroma or a delightful aroma. Progeny of a particular cross are as aroma. follows: come in either a pl Delightful 52 Pleasant 12 What is the inheritance pattern for this trait? Give the legend 3. Plant A is true-bred, and is characterized by yellow seeds, yellow pods, purple flowers, wrinkled seeds, and short stems. Plant B is true-bred and is characterized by green seeds, green pods, white flowers, round seeds, and short stems. A. (4 points) If Gregor Mendel crossed Plant A and Plant B, what would be the phenotype of the F1 plants? B. (6 points) If Mendel then crossed the F1 plants, what proportion of the progeny would have yellow seeds, yellow pods, purple flowers, wrinkled seeds, and short stems?

Explanation / Answer

2.) There are only two phenotypes - Delightful and Pleasant. Here, delightful is dominant and pleasant is recessive. This is because it is a monohybrid cross and this surely results of F2 progeny and the ratio is approximately equal to 3:1 ( 52/12= 4:1). If it would have been F1 then all the phenotypes would have been the single phenotype.

3.) A) Considering yellow seeds, yellow pods, purple flowers, round seeds as dominant traits, all the progenies would have yellow seeds, yellow pods, purple flowers, round seeds, short stem. Since, both the parents have short stem we are not wondering is this dominant or not.

This is because both the plants are true bred. Which implies that they are homozygous for these traits. So, when you cross them, all the progenies will be heterozygous and the phenotype observed will be of dominant trait.

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.