Question

In: Biology

You are studying inheritance of various characters in marigolds including flower color (purple or blue), seed...

You are studying inheritance of various characters in marigolds including flower color (purple or blue), seed color (white or brown) and seed shape (round or oblong). When you cross a plant that is true breeding for blue flowers, white and oblong seeds with a plant that is true breeding for purple flowers, brown and round seeds you find that all of the offspring have blue flowers, and round, white seeds. You then cross these F1 plants with each other and you get the following results:

Blue, brown, oblong - 106

blue, white, oblong - 327

blue, white, round - 1002

blue, brown, round - 338

purple, brown, oblong - 42

purple, white, oblong - 122

purple, white, round - 318

purple, brown, round - 102

6. You then cross a plant that is heterozygous for flower color and seed shape and is homozygous recessive for seed color with a plant that is heterozygous for flower color and seed color but is homozygous dominant for seed shape.

a) What is the probability that the off spring from this cross will be homozygous recessive for all of the loci?

b) What is the probability that the offspring will have purple flowers?

c) What is the probability that the offspring will have blue flowers and round seeds?

Expert Solution

Given in the question various characters in marigolds including flower color (purple or blue), seed color (white or brown) and seed shape (round or oblong). When cross a plant that is true breeding for blue flowers, white and oblong seeds with a plant that is true breeding for purple flowers, brown and round seeds find out that all of the offspring have blue flowers, and round, white seeds.

Hence from the given information what we conclude is that blue colour flower ,round and white seeds are dominant over purple flower ,oblong and brown seed as in f1 generation all progeny we get heterozygous and heterozygous only show that character which is dominant and recessive character only show when it is in homozygous state

Now lets solve the question

When cross a plant that is heterozygous for flower color and seed shape and is homozygous recessive for seed color with a plant that is heterozygous for flower color and seed color but is homozygous dominant for seed shape

Plz upvote my answer Thank you?

gladiator answered 2 years ago

5. You are studying inheritance of various characters in marigolds including flower color (purple or blue),...

5. You are studying inheritance of various characters in marigolds including flower color (purple or blue), seed color (white or brown) and seed shape (round or oblong). When you cross a plant that is true breeding for blue flowers, white and oblong seeds with a plant that is true breeding for purple flowers, brown and round seeds you find that all of the offspring have blue flowers, and round, white seeds. You then cross these F1 plants with each other...

In Mendel's pea plants, the genes that code for flower color, seed color and seed shape...

In Mendel's pea plants, the genes that code for flower color, seed color and seed shape are on 3 different chromosomes. For flower color, purple is dominant over white, yellow seeds are dominant over green and round seeds are dominant over wrinkled seeds. If you crossed two parents who were heterozygous for all 3 genes, how many purple flowered, round and yellow seeded plants would you expect in the offspring generation? correct answer is 27/64 please show work thank you

In pea plants, purple flower color is dominant over white. If one sees a purple pea...

In pea plants, purple flower color is dominant over white. If one sees a purple pea plant and has no prior knowledge of its ancestry, what can be said its genotype? A. It is pp B. It is Pp C. It is PP D. It is either PP or Pp

You are studying a plant whose seed shape (round, disc or elongated) and seed color (yellow,...

You are studying a plant whose seed shape (round, disc or elongated) and seed color (yellow, green grey) are determined by two different gene loci. The R/r locus controls seed shape and the Y/y locus control seed color. You have some data from single-trait crosses that were carried out by a friend of yours: -Yellow and green seed plants each breed true when self crossed, but grey seed plants produce offspring of all 3 color seeds. -Round seed crossed with...

You are studying three linked genes in snapdragons. The flower color locus is in the center....

You are studying three linked genes in snapdragons. The flower color locus is in the center. There are 11.3 cM between the flower color locus and the plant height locus. There are 10.7 cM between the flower color locus and the leaf type locus. The coefficient of coincidence is 0.8. Pure-breeding tall, red-flowered plants with fuzzy leaves were crossed to pure-breeding dwarf, blue-flowered plants with smooth leaves. The F1 were testcrossed. Calculate the proportion of the testcross progeny that are...

A pea plant shows a dominant trait for flower color and therefore have purple flowers. These...

A pea plant shows a dominant trait for flower color and therefore have purple flowers. These pea plants can be either homozygous dominant or heterozygous. In order to determine the genotype of this flower we should cross it with a pea plant that has the genotype

in garden peas, genes controlling height, flower color, and seed size are on the third autosome...

in garden peas, genes controlling height, flower color, and seed size are on the third autosome gene map: height-----10 mu------- color-------------20mu------ seed size a purebred tall, red flowered, large-seeded plant is crossed with a purebred short, white flower, small seeded plant. All of the offspring are medium height, pink, and small seeded. A. What proportions of the pollen produced by the F1 will carry the tall, red flowered and large seed alleles? B. if the F1 is allowed to produce...

Flower color in pea plants exhibits complete dominance as the purple allele is completely dominant over...

Flower color in pea plants exhibits complete dominance as the purple allele is completely dominant over the white alleles. A) Out of 276 pea plants, 273 have purple flowers. Assuming the population is in Hardy-Weinberg Equilibrium, calculate the Expected allele frequencies. B) A group of students counts 552 pea plants. Based on the expected allele frequencies, how many should have purple flowers and how many should have white flowers?

A scientist is studying the inheritance of two traits, red hair color and freckles. The genotypes...

A scientist is studying the inheritance of two traits, red hair color and freckles. The genotypes of both parents are TtGg. However, the reuslts of the cross deviate strongly from the characteristic 9:3:3:1 ratio. What can you conclude from this information? The scientist made a mistake in the experiment, because the law of independent assortment always holds during genetic crosses. The dominant trait is masking the effects of the recessive trait. The alleles for red hair color and freckles are...

You perform a dihybrid cross of plants. The first trait is flower color. “A” is the...

You perform a dihybrid cross of plants. The first trait is flower color. “A” is the dominant allele and causes red petals and “a” is the recessive allele and causes white petals. Stem length is the second trait. “L” is the dominant allele and causes a long stem and “l” is the recessive allele and causes short stems. You cross a Red Long plant that is heterozygous for both traits with a Red Short plant that is heterozygous for color....