1. Use a Punnett’s squares to show a monohybrid cross between pure breeding parents of tall...

1. Use a Punnett’s squares to show a monohybrid cross between pure breeding parents of tall (T) and dwarf (t) pea plants. The tall trait is dominant and thus is represented by the uppercase letter “T”. The dwarf trait is recessive and is represented by to lowercase letter “t”.

2. You have a pea plant with purple flowers but you are unsure of it’s genotype. Since purple flowers is the dominate trait (P), while the recessive trait is white flowers (p), you decide to conduct a test cross to determine the genotype of the purple flowered pea plant. Show how you would do this.

Expert Solution

gladiator answered 1 year ago

A pure breeding tall plant with smooth seeds was crossed with a pure breeding short plant...

A pure breeding tall plant with smooth seeds was crossed with a pure breeding short plant with wrinkled seeds. All the F1 plants were tall with smooth seeds. Two of these F1 plants were crossed and four different phenotypes were obtained in the 320 plants produced. How many tall plants with wrinkled seeds should you expect to find.

Draw Punnett squares for a monohybrid cross, a sex-linked cross, and a dihybrid cross. Give the...

Draw Punnett squares for a monohybrid cross, a sex-linked cross, and a dihybrid cross. Give the expected phenotype and genotype ratios for each.

Draw a Punnett square for a monohybrid cross between A) two homozygous parents (one dominant and...

Draw a Punnett square for a monohybrid cross between A) two homozygous parents (one dominant and on recessive), and B) a heterozygous dominant parent and homozygous recessive parent

You set up a dihybrid cross between true-breeding tall pea plant with white flowers and a...

You set up a dihybrid cross between true-breeding tall pea plant with white flowers and a true-breeding short pea plant with purple flowers. Your F1 generation looks uniformly tall with purple flowers. The results of the F2 generation counts are shown in the table below: Phenotype Number of progeny Tall/purple flowers 850 Short/purple flowers 350 Short/white flowers 87 Tall/white flowers 313 Your calculated Chi square test statistic for this analysis is: a. 8.31 b. 3.37 c. 4.19 d. 16.3 e....

1- A dihybrid cross was made between a true breeding maize cultivar with purple and smooth...

1- A dihybrid cross was made between a true breeding maize cultivar with purple and smooth kernel and a true breeding cultivar with white and wrinkled kernel. The F1 kernels are all purple and smooth. The F1 plants were then crossed with a true breeding cultivar with white and winkled kernels. The following data were obtained regarding phenotypes of kernels F2 generation: 110 Purple and smooth 90 Purple and wrinkled 95 White and smooth 105 White...

1.One of the concerns about genetic modification of agricultural plants is the possibility of cross-breeding between...

1.One of the concerns about genetic modification of agricultural plants is the possibility of cross-breeding between herbicide-resistant GMOs and weeds, creating “superweeds” that would be resistant to commonly used herbicides. EXPLAIN how PCR could be used to determine whether such cross-breeding had occurred.

You are studying wing colour in butterflies. You cross pure-breeding male butterflies that have blue wings...

You are studying wing colour in butterflies. You cross pure-breeding male butterflies that have blue wings with yellow eyespots, with pure-breeding female butterflies with orange wings and black eyespots. The F1 males all have orange wings and black eyespots, while the females have blue wings and yellow eye spots. You cross the F1 males and females and obtain the following F2 (the male and female F2 give the same ratios): 90 with orange wings and black eyespots 90 with blue...

Part A: Punnett Squares I. Monohybrid Crosses 1. In pea plants yellow peas (A) are dominant...

Part A: Punnett Squares I. Monohybrid Crosses 1. In pea plants yellow peas (A) are dominant to green peas (a). Show a cross between two heterozygous yellow pea plants (Aa x Aa). A a A a What is the genotypic ratio of the offspring? _______ AA : _______ Aa: _________ aa What is the phenotypic ratio of the offspring? _______ Yellow: ________ Green Part B: Using the Chi-square (χ2) analysis 9. In Parent 1 (P1) corn plants, the color purple...

1. You cross a true-breeding parental with yellow flowers and oval petals with a true-breeding parental...

1. You cross a true-breeding parental with yellow flowers and oval petals with a true-breeding parental with purple flowers and round petals. The F1 offspring have purple flowers and oval petals. a. Give the genotypes for the parentals and F1s (you can choose your own letters for the alleles): yellow flower oval petal parental: _____ purple flower round petal parental: _____ purple flower oval petal F1: _______ b. You perform a cross of the F1s, to produce the F2 generation....

View the example chi square calculated for a monohybrid cross between two heterozygous flies Phenotype Observed...

View the example chi square calculated for a monohybrid cross between two heterozygous flies Phenotype Observed Expected Deviation (observed - expected)^2/Expected Brown Body Color 580 600 Black body Color 220 200 Total Flies = 800 Chi Square =? What is the chi square value and the Deviation? Answer this based on the values: The Chi square value is ____ (more or less) than the critical value _______. The variation between the observed and expected is ______(due or not due) to...

Question