Homework Answers
Answer to MCQs
1. Since the gene for redness is dominant over gene for whiteness and the parents are true-breeding, thus the offsprings i.e., F1 generation will be all red hybrid.
Correct Answer: Option B
2. Tallness is dominant over dwarfness. 2 heterozygous pea plants are represented by Tt and Tt, where T = tall and t=dwarf.
Parents Tt x Tt
Gametes T t T t
Offsprings TT Tt Tt tt
Thus, we have 75% tall and 25% dwarf plants.
75% tall are based on phenotypes. If genotypes are concerned, TT is pure tall and Tt is heterozygous tall.
Thus, correct answer ; Option A.
3. Correct option: A
Phenotype is the outward appearance, genotype is the genetic make up, true-breeding is when both the alleles are same, for example TT or tt. Hybrid is the offspring from parents.
4. A gamete will contain only 1 allele for a given trait. For example, if 2 plants with dominant and and recessive traits are crossed, each gamete will contain either the dominant or recessive allele. The parents in this case are assumed to be true breeding.
Correct answer : Option B.
5. Woman Ww widow's peak
Man WW widow's peak
Parents Ww WW
Gametes W w W W
Offsprings WW WW Ww Ww
As all of the offsprings have W, none of them will have straight hairline.
Correct Answer : Option A.
6.2 hybrid flies can be represented as Ww and Ww.
Parents Ww x Ww.
Gametes W w W w
Offsprings WW Ww Ww ww
Thus. 1 out of 4 is short winged.
Please note that small wing is represented by w, it is recessive and will be expressed only if it has ww.
Thus, correct answer : Option A
Add Answer to:
Chapter Review 1. The gene for redness is dominant to the gene for whiteness. If a...
are to determine the probability of inheriting a widow's In this activity you will ea Penne...
are to determine the probability of inheriting a widow's In this activity you will ea Penne peak or a straight hairline Procedure Read the instructions for using a Punnet square (Figure 11.1). 1. Discuss the instructions with your lab partners, 2. Fill in the blank spaces and solve problem #1. Using a Punnett Square Gametes • Place possible gametes along two opposite sides of the square Record genotypes of potential offspring in appropriate cells of the square Gametes P PP...
The gene for redness is dominant to the gene for whiteness. If true-breeding plant with red...
The gene for redness is dominant to the gene for whiteness. If true-breeding plant with red flowers is crossed with a true-breeding plant with white flowers, their offspring will be? A. red and true-breeding B. red hybrids C. white and true-breeding D. pink
5. In Mendel's experiments, the pod color gene and the seed shape gene were located on...
5. In Mendel's experiments, the pod color gene and the seed shape gene were located on different chromosomes (in other words, they were not linked. They assort independently). Green pods (G) are dominant over yellow pods (g) and tall stems (T) are dominant over dwarf stems (t). You are given two true breeding plants (homozygous at both genes). In the parental (P) generation, one parent has green pods and dwarf stems and the second parent has yellow pods and tall...
GENETICS PROBLEMS 1. The gene for widow's peak (W) is dominant to the gene for straight hairline...
GENETICS PROBLEMS 1. The gene for widow's peak (W) is dominant to the gene for straight hairline (w). A male homozygote with widow's peak marries a female homozygote with straight hairline, what are the possible genotypic and phenotypic ratios of the F1 and F2 generations that may result from the union? Phenotype of Parents ………………………… x ………………………… Genotype of Parents ………………………… x ………………………… Genes in gametes ………………………… x ………………………… Genotype of F1 Generation ………………………… Phenotype of F1 Generation ………………………… Genes in F1 gametes ………………………… or ………………………… (Punnett Square)...
, Pre-Lab Assignment P generation 1. Figure 9.8 illustrates one of Gregor Mendel's Dwarf breeding...
, Pre-Lab Assignment P generation 1. Figure 9.8 illustrates one of Gregor Mendel's Dwarf breeding experiments with his pea plants. ai Genetic makeup: In this particular experiment with pea plant height, the P generation consisted of pure- breeding tall pea plants mated with pure- breeding dwarf pea plants. Gametes: 0 plants nated wito Fill in the blanks of the following paragraph ,geneation concerning this experiment. Gregor Mendel discovered several new ideas about inheritance when he performed breed- Genetic makeup: ing...
Question 19 (1 point) In humans, a cleft chin is dominant (C) to a smooth chin...
Question 19 (1 point) In humans, a cleft chin is dominant (C) to a smooth chin (c). In a genetic cross between a heterozygous individual and an individual homozygous for the recessive trait, what percentage of offspring will have a smooth chin? O a) 75% Ob) 25% O c) 100% d) 50% Question 20 (1 point) In humans, a widow's peak hairline is dominant (W) to a straight (w) hairline. If the ratio of offspring inheritence is 3:1 for a...
Genetics and Heredity Practice Problems A. Mendelian Genetics 1. In humans, achondroplasia or "dwarfism (D) is...
Genetics and Heredity Practice Problems A. Mendelian Genetics 1. In humans, achondroplasia or "dwarfism (D) is dominant over normal (d). A homorygous dominant (DD) person dies before the age of one. A heterozygous (d) person is dwarfed. A homozygous recessive individual is normal. If a heterozygous dwarf man marries a dwarf heterozyrous woman a. What is the probability of having a normal child? b. What is the probability of having a child that is a dwarf? What is the probability...
need help with these questions please. 12: In the F2 generation of Mendel's monohybrid cross, the...
need help with these questions please.
12: In the F2 generation of Mendel's monohybrid cross, the two heterozygous parent corn plants (Pp x Pp) produced offspring with the following genotypes e) PP (purple). Pp (purple). Pp(white). f) All purple g) All White h) All pink 15: A female fruit fly that is homozygous for white mutation will have the genotype a) W-w- b) Wºw c) W/W- d) W/Y 21: A father is heterozygous for the ability to roll the tongue....
2. A widow's peak (W) is dominant to a straight hairline (w), and unattached earlobes (E)...
2. A widow's peak (W) is dominant to a straight hairline (w), and unattached earlobes (E) is dominant to attached earlobes (e). Two parents, each with the genotype WwEe, have kids. a. What proportion of their offspring will have a widow's peak and unattached earlobes? b. What proportion will have unattached earlobes but have either a widow's peak or a straight hairline? 3. A woman with normal color vision, whose mother was colorblind, has children with a man with normal...
1. In one experiment, Mendel crossed a pea plant that bred true for axial flowers with...
1. In one experiment, Mendel crossed a pea plant that bred true for axial flowers with a pea plant that bred true for terminal flowers. All the F1 plants had axial flowers. Which is the recessive trait? Explain your answer. 2. Green pod color is a dominant allele in pea plants (G). If two plants with green pods are crossed, some of the offspring have yellow pods. What are the possible genotypes of the parents? 3. In garden peas, one...
are to determine the probability of inheriting a widow's In this activity you will ea Penne peak or a straight hairline Procedure Read the instructions for using a Punnet square (Figure 11.1). 1. Discuss the instructions with your lab partners, 2. Fill in the blank spaces and solve problem #1. Using a Punnett Square Gametes • Place possible gametes along two opposite sides of the square Record genotypes of potential offspring in appropriate cells of the square Gametes P PP...
5. In Mendel's experiments, the pod color gene and the seed shape gene were located on different chromosomes (in other words, they were not linked. They assort independently). Green pods (G) are dominant over yellow pods (g) and tall stems (T) are dominant over dwarf stems (t). You are given two true breeding plants (homozygous at both genes). In the parental (P) generation, one parent has green pods and dwarf stems and the second parent has yellow pods and tall...
, Pre-Lab Assignment P generation 1. Figure 9.8 illustrates one of Gregor Mendel's Dwarf breeding experiments with his pea plants. ai Genetic makeup: In this particular experiment with pea plant height, the P generation consisted of pure- breeding tall pea plants mated with pure- breeding dwarf pea plants. Gametes: 0 plants nated wito Fill in the blanks of the following paragraph ,geneation concerning this experiment. Gregor Mendel discovered several new ideas about inheritance when he performed breed- Genetic makeup: ing...
Question 19 (1 point) In humans, a cleft chin is dominant (C) to a smooth chin (c). In a genetic cross between a heterozygous individual and an individual homozygous for the recessive trait, what percentage of offspring will have a smooth chin? O a) 75% Ob) 25% O c) 100% d) 50% Question 20 (1 point) In humans, a widow's peak hairline is dominant (W) to a straight (w) hairline. If the ratio of offspring inheritence is 3:1 for a...
Genetics and Heredity Practice Problems A. Mendelian Genetics 1. In humans, achondroplasia or "dwarfism (D) is dominant over normal (d). A homorygous dominant (DD) person dies before the age of one. A heterozygous (d) person is dwarfed. A homozygous recessive individual is normal. If a heterozygous dwarf man marries a dwarf heterozyrous woman a. What is the probability of having a normal child? b. What is the probability of having a child that is a dwarf? What is the probability...
need help with these questions please.
12: In the F2 generation of Mendel's monohybrid cross, the two heterozygous parent corn plants (Pp x Pp) produced offspring with the following genotypes e) PP (purple). Pp (purple). Pp(white). f) All purple g) All White h) All pink 15: A female fruit fly that is homozygous for white mutation will have the genotype a) W-w- b) Wºw c) W/W- d) W/Y 21: A father is heterozygous for the ability to roll the tongue....
2. A widow's peak (W) is dominant to a straight hairline (w), and unattached earlobes (E) is dominant to attached earlobes (e). Two parents, each with the genotype WwEe, have kids. a. What proportion of their offspring will have a widow's peak and unattached earlobes? b. What proportion will have unattached earlobes but have either a widow's peak or a straight hairline? 3. A woman with normal color vision, whose mother was colorblind, has children with a man with normal...
Most questions answered within 3 hours.
-
21
The maximum amount of lead hydroxide that will dissolve in a
0.108 M lead nitrate...
asked 3 minutes ago -
Imagine that you are describing the use of the internet/World
Wide Web/email/social media to a business...
asked 6 minutes ago -
Suppose that stars were born at random times over the last 1010
years. The rate of...
asked 6 minutes ago -
The approved‐supplier list represents a major security
precaution that is popular among large hospitality companies.
Explain...
asked 9 minutes ago -
-Match the charge on phenylalanine at different pH:
1) pH=1
2) physiological pH
3) pH=10
a)...
asked 30 minutes ago -
Suppose the space shuttle is in orbit 500 km from the Earth's
surface, and circles the...
asked 25 minutes ago -
Heroux Corporation has two manufacturing departments--Forming
and Customizing. The company used the following data at the...
asked 22 minutes ago -
Select the correct statement(s):
1)Exceptions are compiler errors
2) Exceptions can be thrown from a method....
asked 26 minutes ago -
Please answer the questions from the field of genetics, in
words, and in detail.
1. What...
asked 29 minutes ago -
Assume that Earth's orbit around the Sun is a perfect circle.
Earth's inertia is 5.97×1024kg, the...
asked 44 minutes ago -
Alliance Company's budgets production of 28,000 units in January
and 32,000 units in February. Each finished...
asked 43 minutes ago -
You want to estimate the population mean by taking a sample and
constructing a 80% confidence...
asked 50 minutes ago