Homework Answers
Leaf colour in Mirabilis jalapa is an example of cytoplasmic or Non- Mendelian inheritence. Cytoplasmic inheritance means transmission of genes that occurs outside the nucleus. It is commonly associated with cytoplasmic organelles like mitochondria and chloroplast. This is also called maternal inheritance because mainly maternal cytoplasmic genes are transferred to offspring not paternal.
In the crosses done in Mirabilis jalapa, phenotype of offsprings is determined by maternal plant only. Unlike Mendelian crosses, they show different results after reciprocal cross.
Cross 1:- As the maternal plant has white leaves; all white offsprings will be produced.
In reciprocal cross of cross 1; all green offsprings will be there as maternal plant has green le. leaves.
Cross 2:- Maternal plant is variegated; green, white or variegated offsprings will be produced.
In reciprocal cross of cross 2; offsprings are of green colour( Maternal plant with green leaves)
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genetics
The plant, Mirabilis jalapa (the common name is the four-o'clock plant) exhibits three different color...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male (pollen) and female (ova) gametes from flowers growing on three types of branches: variegated, all white, and all green. Solid white branches are homoplasmic for mutant chloroplasts, solid green branches are homoplasmic for wild-type chloroplasts, and variegated branches are heteroplasmic for both types of chloroplasts. In a cross between an ovum from a solid green branch and pollen from a solid white branch, which...
Required information To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses...
Required information To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male (pollen) and female (ova) gametes from flowers growing on three types of branches: variegated, all white, and all green. Solid white branches are homoplasmic for mutant chloroplasts, solid green branches are homoplasmic for wild-type chloroplasts, and variegated branches are heteroplasmic for both types of chloroplasts. hundreds of progeny from a cross are all white, what can be concluded about the parent plants?...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male (pollen) and female (ova) gametes from flowers growing on three types of branches: variegated, all white, and all green. Solid white branches are homoplasmic for mutant chloroplasts, solid green branches are homoplasmic for wild-type chloroplasts, and variegated branches are heteroplasmic for both types of chloroplasts. In a different species of variegated plant, color is determined by two codominant alleles of a nuclear gene. If...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male (pollen) and female (ova) gametes from flowers growing on three types of branches: variegated, all white, and all green. Solid white branches are homoplasmic for mutant chloroplasts, solid green branches are homoplasmic for wild-type chloroplasts, and variegated branches are heteroplasmic for both types of chloroplasts. In a new species of variegated plant, color is determined by mutations in a chloroplast gene and chloroplasts are...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male (pollen) and female (ova) gametes from flowers growing on three types of branches: variegated, all white, and all green. Solid white branches are homoplasmic for mutant chloroplasts, solid green branches are homoplasmic for wild-type chloroplasts, and variegated branches are heteroplasmic for both types of chloroplasts. If hundreds of progeny from a cross are all white, what can be concluded about the parent plants? Check...
0 Required information To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise...
0 Required information To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male (pollen) and female (ova) gametes from flowers growing on three types of branches: variegated, all white, and all green. Solid white branches are homoplasmic for mutant chloroplasts, solid green branches are homoplasmic for wild-type chloroplasts, and variegated branches are heteroplasmic for both types of chloroplasts. In a new species of variegated plant, color is determined by mutations in a chloroplast gene...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male (pollen) and female (ova) gametes from flowers growing on three types of branches: variegated, all white, and all green. Solid white branches are homoplasmic for mutant chloroplasts, solid green branches are homoplasmic for wild-type chloroplasts, and variegated branches are heteroplasmic for both types of chloroplasts. If a cross produces hundreds of progeny that are a mixture of white, green and variegated, what can be...
2. A Pea plant that is Homozygous Dominant for purple flower color and Heterozygous for dark...
2. A Pea plant that is Homozygous Dominant for purple flower color and Heterozygous for dark green leaves is crossed with another pea plant that is Heterozygous for both purple flower color and dark green leaves Let R = Purple flower color and r = white flower color Let D = Dark Green leaves and d = light green leaves Data Collection/Selection Using the information above, write the parent genotypes and gametes. Not all blanks may be used. Parent Genotypes:...
2. Hostas are a decorative leafy shade-loving plant. You take pollen from a true-breeding variety called...
2. Hostas are a decorative leafy shade-loving plant. You take pollen from a true-breeding variety called "Fire and Ice" with leaves that start white then develop green sectors, and purple flowers. The second strain (the female parent) is a true breeding variety called Earth Angel, which has green leaves with golden/yellow leaf centers, and white flowers. "Fire and Ice" "Earth Angel" The F1s all have the golden centered green leaves and pink flowers. Flower colors The F2s come out as...
(More Genetics Problems and Difficult Genetics Problems). MORE GENETICS PROBLEMS 1. When tall plants mate with...
(More Genetics Problems and Difficult Genetics Problems). MORE GENETICS PROBLEMS 1. When tall plants mate with dwarf plants, only tall plants occur in the offspring. Assign symbols and show the phenotypes and genotypes in the parental (P) and first filial generations for a cross between tall plants and dwarf plants that produces only tall plants. 2. Show the expected outcome when the F1 plants in problem #1 are crossed. Be sure to give both phenotype and genotype ratios for these...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male (pollen) and female (ova) gametes from flowers growing on three types of branches: variegated, all white, and all green. Solid white branches are homoplasmic for mutant chloroplasts, solid green branches are homoplasmic for wild-type chloroplasts, and variegated branches are heteroplasmic for both types of chloroplasts. In a cross between an ovum from a solid green branch and pollen from a solid white branch, which...
Required information To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male (pollen) and female (ova) gametes from flowers growing on three types of branches: variegated, all white, and all green. Solid white branches are homoplasmic for mutant chloroplasts, solid green branches are homoplasmic for wild-type chloroplasts, and variegated branches are heteroplasmic for both types of chloroplasts. hundreds of progeny from a cross are all white, what can be concluded about the parent plants?...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male (pollen) and female (ova) gametes from flowers growing on three types of branches: variegated, all white, and all green. Solid white branches are homoplasmic for mutant chloroplasts, solid green branches are homoplasmic for wild-type chloroplasts, and variegated branches are heteroplasmic for both types of chloroplasts. In a different species of variegated plant, color is determined by two codominant alleles of a nuclear gene. If...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male (pollen) and female (ova) gametes from flowers growing on three types of branches: variegated, all white, and all green. Solid white branches are homoplasmic for mutant chloroplasts, solid green branches are homoplasmic for wild-type chloroplasts, and variegated branches are heteroplasmic for both types of chloroplasts. In a new species of variegated plant, color is determined by mutations in a chloroplast gene and chloroplasts are...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male (pollen) and female (ova) gametes from flowers growing on three types of branches: variegated, all white, and all green. Solid white branches are homoplasmic for mutant chloroplasts, solid green branches are homoplasmic for wild-type chloroplasts, and variegated branches are heteroplasmic for both types of chloroplasts. If hundreds of progeny from a cross are all white, what can be concluded about the parent plants? Check...
0 Required information To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male (pollen) and female (ova) gametes from flowers growing on three types of branches: variegated, all white, and all green. Solid white branches are homoplasmic for mutant chloroplasts, solid green branches are homoplasmic for wild-type chloroplasts, and variegated branches are heteroplasmic for both types of chloroplasts. In a new species of variegated plant, color is determined by mutations in a chloroplast gene...
To investigate the inheritance of color variegation in four-o'clocks, Carl Correns performed pairwise crosses between male (pollen) and female (ova) gametes from flowers growing on three types of branches: variegated, all white, and all green. Solid white branches are homoplasmic for mutant chloroplasts, solid green branches are homoplasmic for wild-type chloroplasts, and variegated branches are heteroplasmic for both types of chloroplasts. If a cross produces hundreds of progeny that are a mixture of white, green and variegated, what can be...
2. Hostas are a decorative leafy shade-loving plant. You take pollen from a true-breeding variety called "Fire and Ice" with leaves that start white then develop green sectors, and purple flowers. The second strain (the female parent) is a true breeding variety called Earth Angel, which has green leaves with golden/yellow leaf centers, and white flowers. "Fire and Ice" "Earth Angel" The F1s all have the golden centered green leaves and pink flowers. Flower colors The F2s come out as...
(More Genetics Problems and Difficult Genetics Problems). MORE GENETICS PROBLEMS 1. When tall plants mate with dwarf plants, only tall plants occur in the offspring. Assign symbols and show the phenotypes and genotypes in the parental (P) and first filial generations for a cross between tall plants and dwarf plants that produces only tall plants. 2. Show the expected outcome when the F1 plants in problem #1 are crossed. Be sure to give both phenotype and genotype ratios for these...
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