Question

A plant thought to be heterozygous for two independently assorting genes (Pp; Qq) was selfed and...

A plant thought to be heterozygous for two independently assorting genes (Pp; Qq) was selfed and the progeny were: 188 P_Q_ 24 pp qq 45 pp Q_ 52 P_qq. Do these results support the hypothesis that the original plant was Pp Qq?

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

we know that highest number progeny are due to non-recombinant gametes, and lower number of progeny are due to recombinant gametes.

in the question, 188 P-Q- and 52 P-qq can be considered as parental genotypes. (however, usually we find these two numbers closely). By looking at the second one (P-qq), we can say that one gamete has 'P' is associated with 'q'. therefore, one recombinant gamete from parents is 'Pq'

the other two progeny, 24 ppqq and 45 ppQ- are the recombinant ones, ie, these progeny are formed due to fertilization between non-recombinant gametes. by looking at the first one (ppqq), we can say that 'p' is associated with 'q' in recombinant gamete. therefore, the non-recombinant gamete would have 'pQ' genotype.

hence, the original parent would be PpQq.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Please Show how to find the Expected values A fully heterozygous flowering plant with normal green...
Please Show how to find the Expected values A fully heterozygous flowering plant with normal green flowers and round seeds. This plant, when crossed with one that has purple flowers and oval seeds, results in the following progeny: 83 green, round 126 purple, round 117 green, oval 74 purple, oval A. What is the recombination frequency between seed color and shape?  (show all work) B. Do a Chi square test for linkage. Are these genes linked and if so are they...
(5 pts) Genes D and E are located in the Drosophila genome. DE·DE females are crossed...
(5 pts) Genes D and E are located in the Drosophila genome. DE·DE females are crossed with de·de males to produce F1 flies that are heterozygous for both traits. What gametes do each of these parents make? F1 females were crossed with de·de males, and 2000 flies were examined. What gametes do each of these parents make? What are the possible genotypes of the offspring produced from the cross in part B? If the genes were sorting independently (not linked),...
In tomato (Lycopersicon esculentum), the following genes are located on chromosome-4.                         d - dwarf plant  &
In tomato (Lycopersicon esculentum), the following genes are located on chromosome-4.                         d - dwarf plant                        + - tall plant                         m - mottled green leaf             + - uniform green leaf                         p - pubescent fruit                   + - smooth fruit                         A testcross of a triple heterozygote for the above characteristics gave the following results.                         Phenotypes                                          No.      ________________________________________                         Wild type                                            29                         Pubescent fruit                                    1                         Dwarf                                                  23                         Mottled leaf                                        430                         Mottled leaf, pubescent fruit...
In mice, coat colour and tail length are controlled by two linked genes: B = Black,...
In mice, coat colour and tail length are controlled by two linked genes: B = Black, b = brown; and T = long tailed, t = short tailed. A testcross was carried out using a heterozygous black, long tailed mouse, and the following progeny were observed: 7 Black, long-tailed 18 Black, short-tailed 20 Brown, long-tailed 5 Brown, short-tailed a)      What is the recombination frequency between the B and T genes? b)      What is the map distance between the B and...
In a typical Mendelian cross (i.e. independent assortment of the genes is expected) between two heterozygous...
In a typical Mendelian cross (i.e. independent assortment of the genes is expected) between two heterozygous plants (Rr x Rr) We obtain the following results. RR=360, Rr=480 and rr= 160 Draw your own table, calculate your allele frequencies, genotype frequencies (observed and expected) and use your observed and expected counts to find X2. What will be the degree of freedom? Do we accept or reject the null hypothesis of HWE?
Experiment 3: Plant Genetics: Inheritance of Two Genes Plants provide a useful model for studying inheritance....
Experiment 3: Plant Genetics: Inheritance of Two Genes Plants provide a useful model for studying inheritance. In this experiment, you will use Wisconsin Fast Plant™ seeds to evaluate how two genes are passed from parents to their progeny. Anthocyanin is a purple pigment that produces a visible marking in many plants. It is best observed when plants are four to seven days old. The presence of the anthocyaninless gene (anl) in Wisconsin Fast Plants™ regulates expression of the pigment. Homozygous...
In maize, a dominant allele A is necessary for seed color as opposed to colorless a....
In maize, a dominant allele A is necessary for seed color as opposed to colorless a. Another gene has a recessive allele wx that results in waxy starch, as opposed to normal starch Wx. The two genes segregate independently. A true breed colorless, normal starch plant was crossed with a true breed colored, waxy plant. The offspring of that cross were selfed to produce an F2 generation. a. Give the genotypes and phenotypes (and ratios) of the P, F1, and...
QUESTION 1 :The alleles of a particular gene segregate independently into individual gametes (sex cells) during...
QUESTION 1 :The alleles of a particular gene segregate independently into individual gametes (sex cells) during meiosis. True or False QUESTION 2:The DNA sequence of a gene is a phenotype. True or False QUESTION 3:Two diploid individuals, one homozygous and the other heterozygous at a particular gene, make babies. Which of the following statements about the offspring genotype is correct? (Hint: draw Punnett squares) A. All offspring are heterozygotes B. All offspring are homozygotes C. 1/2 of the offspring are...
1. A species of flowering plant includes plants with blooms that range from bright golden yellow...
1. A species of flowering plant includes plants with blooms that range from bright golden yellow to very pale yellow; no flowers carrying the yellow pigment allele appear white. The allele for yellow flower color: a. must be a suppressor of another allele. b. demonstrates incomplete penetrance. c. demonstrates variable expressivity. d. must be a modifier of another allele. e. demonstrates variable penetrance. 2. Coat color in mice is determined by two alleles acting at a single locus: B is...
6. When analyzing survey results from a two way table, the main distinction between a test...
6. When analyzing survey results from a two way table, the main distinction between a test of independence and a test for homogeneity is: A. How the degrees of freedom are calculated B. how the expected counts are calculated C. the number of samples obtained D. the number of rows in the two way table E. the number of columns in the two way table. 7. A controversial issue in the sport of professional soccer is the use of instant...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT