Homework Answers
1. C. Test cross, a plant homozygous for the recessive allele , short stalks and green seeds (ttyy). Because if the plant is homozygous (TTYY) then there offsprings will be all tall and yellow. And if the plant is heterozygous (TtYy) then there offsprings will be mixer of tall and yellow plants, tall and green plants, short and yellow plants , short and green plants.
2. C. a character is a particular part or featute of a species and the feature of the charcter is the phenotype. For example, plant hight is a character and tall or dwarf is the phenotype.
3. D. Genotypic ratio is 1:2:1.
4. A 1:1 for monohybrid.
5. D. 2 different genes will randomly assort their alleleis during formation of haploid cells.
6. C. 6.25%
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Let's say you have a pea plant that has the dominant traits for Tall stalks and...
Table 1: Mendel's Traits and Symbols for Pea Plants Traits Symbol Symbol Dominant Allele Round Yellow...
Table 1: Mendel's Traits and Symbols for Pea Plants Traits Symbol Symbol Dominant Allele Round Yellow Smooth Green Tall Axial Seed Shape Seed Color Pod Shape Pod Color Plant Height Flower Position S Recessive Allele Wrinkled Green Constricted Yellow Short Terminal а Refer back to Table 1 on the first pa abie 1 on the first page of this assignment to answer the following two questions. Use the appropriate symbols and phenotypes in your answer, 1. Show the genotypes of...
Mendel worked with pea plants that showed complete dominance for several traits. He was able to...
Mendel worked with pea plants that showed complete dominance for several traits. He was able to check his hypotheses about how inheritance works. He determined that traits are caused by two (? ) factors - one from the mother and one from the father. ?= form of allele that will mask the recessive ?= form of allele that will not show unless both alleles are recessive. ?= sections of a chromosome that code for proteins (and show up as traits)....
1) The alternate forms of a gene for the same trait are known as -A)alleles. B)phenotypes....
1) The alternate forms of a gene for the same trait are known as -A)alleles. B)phenotypes. C)genotypes. D)codominants. E)incomplete dominants. 2) Mendel carried out most of his research with A)livestock -B)pea plants. C)guinea pigs. D)fruit flies. E)bacteria. 3) Which of the following is true according to Mendel's law of segregation? A)Each individual contains two alleles for each trait. B)Fertilization restores the presence of two alleles. C)Alleles separate from each other during gamete formation. D)Each gamete contains one copy of each...
You have two families of true-breeding diploid Zea mays(maize, corn) plants. Late flowering, with tall stalks...
You have two families of true-breeding diploid Zea mays(maize, corn) plants. Late flowering, with tall stalks Early flowering, with short stalks A cross between these two plants yields F1 hybrids that are late flowering, with tall stalks. Given this information, which alleles are dominant? Explain your reasoning. Using the letters F or f for flowering and T or t for stalk height, indicate the genotypes of the two plants. Plant 1 ______________ Plant 2 ___________________ What is the genotype of the...
Genes W, Y, Z assort independently and are dominant over their corresponding alleles w, y, z....
Genes W, Y, Z assort independently and are dominant over their corresponding alleles w, y, z. You conduct an experiment where you set up a cross between two individuals heterozygous for each trait [Ww Yy Zz x Ww Yy Zz]. (a) What is the frequency of offspring resulting from the cross who are dominant homozygous--that is, whose genotype is [WW YY ZZ]?(b) What is the frequency of offspring whose phenotype is dominant for all three traits?
How many different combinations of alleles are possible among the gametes produced by an individual that...
How many different combinations of alleles are possible among the gametes produced by an individual that is heterozygous for 5 separate (unlinked) genes? five ten sixteen thirty- two Consider a pea plant heterozygous for two dichotomous traits. flower color: PP and P_p = purple flowers; pp = white flowers. seed shape: RR and Rr = round seeds; rr = wrinkled seeds. A self-hybridizing dihybrid plant (PpRr x PpRr) generates F2 seeds that can be planted to grow into plants (di-hybrid...
12) In peas, the yellow seed color is dominant (YY or Yy) over the green seed...
12) In peas, the yellow seed color is dominant (YY or Yy) over the green seed color (vy). You have been given a plant that only produces yellow seeds and need to determine if the plant is YY or Yy. Which of the following crosses would be most effective for determining the genotype of your plant? A)your plant x a plant that produces only green seeds B)your plant x another plant with known genotype YY C)your plant x another plant...
Question 31 (1 point) In pea plants, round (R) seeds are dominant to wrinkled (r) seeds....
Question 31 (1 point) In pea plants, round (R) seeds are dominant to wrinkled (r) seeds. In a genetic cross of two pea plants where one plant is heterozygous for the seed shape trait and the other is homozygous for the recessive (r) trait, what percentage of the offspring would have the wrinkled seed shape? O a) 25% Ob) 100% O c) 50% O d) 75% Question 32 (1 point) In pea plants, green (G) seeds are dominant to yellow...
In Mendel's pea plants, the allele for purple flowers (P) is dominant to the allele for...
In Mendel's pea plants, the allele for purple flowers (P) is dominant to the allele for white flowers (p). You cross two pea plants that are heterozygous for the flower color trait and obtain 36 peas. When you plant these peas and grow them long enough to see their flowers, you find that 25 of them have purple flowers and 11 of them have white flowers. (a) For this cross, what are the expected values for each phenotype? (1 point)...
8. Pea plant breeders wanted to pick healthy tall plants that were homozygous for the height...
8. Pea plant breeders wanted to pick healthy tall plants that were homozygous for the height gene. They had a collection of 10 plants that were healthy and tall, but the genotypes were unknown. How might they determine if the 10 tall plants were heterozygous or homozygous for the height gene? a. What genotypes are possible for tall pea plants? b. What cross would be most useful in distinguishing between homozygous and heterozygous tall plants? c. Explain the concept of...
Table 1: Mendel's Traits and Symbols for Pea Plants Traits Symbol Symbol Dominant Allele Round Yellow Smooth Green Tall Axial Seed Shape Seed Color Pod Shape Pod Color Plant Height Flower Position S Recessive Allele Wrinkled Green Constricted Yellow Short Terminal а Refer back to Table 1 on the first pa abie 1 on the first page of this assignment to answer the following two questions. Use the appropriate symbols and phenotypes in your answer, 1. Show the genotypes of...
1) The alternate forms of a gene for the same trait are known as -A)alleles. B)phenotypes. C)genotypes. D)codominants. E)incomplete dominants. 2) Mendel carried out most of his research with A)livestock -B)pea plants. C)guinea pigs. D)fruit flies. E)bacteria. 3) Which of the following is true according to Mendel's law of segregation? A)Each individual contains two alleles for each trait. B)Fertilization restores the presence of two alleles. C)Alleles separate from each other during gamete formation. D)Each gamete contains one copy of each...
How many different combinations of alleles are possible among the gametes produced by an individual that is heterozygous for 5 separate (unlinked) genes? five ten sixteen thirty- two Consider a pea plant heterozygous for two dichotomous traits. flower color: PP and P_p = purple flowers; pp = white flowers. seed shape: RR and Rr = round seeds; rr = wrinkled seeds. A self-hybridizing dihybrid plant (PpRr x PpRr) generates F2 seeds that can be planted to grow into plants (di-hybrid...
12) In peas, the yellow seed color is dominant (YY or Yy) over the green seed color (vy). You have been given a plant that only produces yellow seeds and need to determine if the plant is YY or Yy. Which of the following crosses would be most effective for determining the genotype of your plant? A)your plant x a plant that produces only green seeds B)your plant x another plant with known genotype YY C)your plant x another plant...
Question 31 (1 point) In pea plants, round (R) seeds are dominant to wrinkled (r) seeds. In a genetic cross of two pea plants where one plant is heterozygous for the seed shape trait and the other is homozygous for the recessive (r) trait, what percentage of the offspring would have the wrinkled seed shape? O a) 25% Ob) 100% O c) 50% O d) 75% Question 32 (1 point) In pea plants, green (G) seeds are dominant to yellow...
In Mendel's pea plants, the allele for purple flowers (P) is dominant to the allele for white flowers (p). You cross two pea plants that are heterozygous for the flower color trait and obtain 36 peas. When you plant these peas and grow them long enough to see their flowers, you find that 25 of them have purple flowers and 11 of them have white flowers. (a) For this cross, what are the expected values for each phenotype? (1 point)...
8. Pea plant breeders wanted to pick healthy tall plants that were homozygous for the height gene. They had a collection of 10 plants that were healthy and tall, but the genotypes were unknown. How might they determine if the 10 tall plants were heterozygous or homozygous for the height gene? a. What genotypes are possible for tall pea plants? b. What cross would be most useful in distinguishing between homozygous and heterozygous tall plants? c. Explain the concept of...
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