1. A monogenic trait (hair color) is controlled by the B locus with dominant B (brown)...
1. A monogenic trait (hair color) is controlled by the B locus with dominant B (brown) and recessive b (red) alleles. Another monogenic trait (hair texture) is controlled by the C locus with dominant C (curly hair) and recessive c (straight hair).
a) What are the possible classes of genotypes with these two loci?
b) What are the possible genotypes with these two loci?
c) What are the possible genotype(s) of a person with brown hair?
d) What are the possible genotype(s) of a person with straight hair?
e) What are the possible genotype(s) of a person with straight and red hair?
f) What are the possible genotype(s) of a person with curly and red hair?
g) What are the possible genotype(s) of a person with curly and brown hair?
h) How many types of gamete can be produced from an individual with genotype BBCC?
i) How many types of gamete can be produced from an individual with genotype bbCc?
j) How many types of gamete can be produced from an individual with genotype BbCc?
Homework Answers
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1. A monogenic trait (hair color) is controlled by the B locus
with dominant B (brown)...
In humans, the allele for black hair (B) is dominant to the allele to brown hair...
In humans, the allele for black hair (B) is dominant to the allele to brown hair (b), and the allele for curly hair (C) is dominant to the allele for straight hair (c). When a person of unknown genotype is crossed against a straight- and brown-haired individual, the phenotypic 2. ratio is 25% curly black hair 25% straight black hair 25% curly brown hair 25% straight brown hai What is the genotype of the unknown parent? (A) BBCO (B) BbCC...
Character Traits Allele Hair texture Dominant-curly Recessive-straight H h Eye color Dominant-brown Recessive-blue E e Nose...
Character Traits Allele Hair texture Dominant-curly Recessive-straight H h Eye color Dominant-brown Recessive-blue E e Nose width Dominant-wide Recessive-narrow N n SueBob’s genotype is HHEeNn. What are her possible gametes? Case sensitive!
Character Traits Allele Hair texture Dominant-curly Recessive-straight H h Eye color Dominant-brown Recessive-blue E e Nose...
Character Traits Allele Hair texture Dominant-curly Recessive-straight H h Eye color Dominant-brown Recessive-blue E e Nose width Dominant-wide Recessive-narrow N n SueBob’s genotype is: HHEeNn HenryJane’s genotype is: HheeNn What are the expected phenotypic ratios of their offspring? You can write your responses are a fraction or decimal Brown eyes and wide nose: Brown eyes and narrow nose: Blue eyes and wide nose: Blue eyes and narrow nose:
In humans, brown (B) eye color is dominant to blue (b) eye color and brown (H)...
In humans, brown (B) eye color is dominant to blue (b) eye color and brown (H) hair color is dominant to red (h) hair color. [Assume single-gene traits] Of only the offspring that have brown eyes and brown hair (B_H_, where dash indicates that the individual could be either homozygous or heterozygous for the dominant allele), what proportion are expected to have a genotype that is heterozygous for one of the traits but homozygous for the other trait? A) 1/4...
Character Traits Allele Hair texture Dominant-curly Recessive-straight H h Eye color Dominant-brown Recessive-blue E e Nose...
Character Traits Allele Hair texture Dominant-curly Recessive-straight H h Eye color Dominant-brown Recessive-blue E e Nose width Dominant-wide Recessive-narrow N n Using the table above, rewrite SueBob’s genotype. Describe Baby SueBob’s phenotype. When SueBob grows up, she starts a family with HenryJane. His genotype is HheeNn. Describe HenryJane’s phenotype. Complete a Punnett square to predict the probabilities of hair texture among their children. HenryJane’s Sperm SueBob’s eggs Complete the dihybrid cross to predict the probability of eye color AND...
1.My wife has black color eyes, the dominant trait. All of her family and relatives have...
1.My wife has black color eyes, the dominant trait. All of her family and relatives have dark eyes too. I have light color eyes (blue), the recessive trait. We are hoping for a blue-eyed baby. What is the probability we will have a baby with blue eyes? What is the probability we will have a baby with dark eyes? 2. In humans, tongue rolling is a dominant trait, those with the recessive condition cannot roll their tongues. Bob can roll...
Question 4 (1 point) Two loci are linked to each other. The Red hair locus is...
Question 4 (1 point) Two loci are linked to each other. The Red hair locus is complete dominant in that the dominant allele (R) provides an individual with non-red hair and the recessive allele (r) provides an individual with red hair. The Freckles locus is completely dominant in that the dominant allele (F) codes for freckles and the recessive allele (f) doesn't cause freckles. You often see red hair and freckles occurring together, suggesting the two loci are linked. Provided...
7) In humans, brown eyes (B) are a simple dominant trait over blue eyes (b). What...
7) In humans, brown eyes (B) are a simple dominant trait over blue eyes (b). What is the genotype of a brown-eyed woman who has a blue-eyed child? A)bb -B)Bb С)ВВ D)BBB E) BbBb 8) The ability to roll the edges of the tongue upward in a U-shape is inherited as a dominant allele at a single gene locus, Which of the following genotypes would produce an individual that can roll their tongue? A)TT only B)Tt only C) only D)TT...
1 point You have a two locus trait with genes A and B, and both parents...
1 point You have a two locus trait with genes A and B, and both parents are heterozygous at both loci. You find that individuals with AABB have very dark hair, while individuals with aabb have white hair. The more a's and b's that are in the genotype the lighter the hair color. This is an example of a monogenic trait with non-additive inheritance non-genetic Inheritance O a polygenic trait with non-additive inheritance O a polygenic trait with additive inheritance...
1. In a monohybrid cross, (a) only one trait is being considered. ib) the parents are...
1. In a monohybrid cross, (a) only one trait is being considered. ib) the parents are always dominant. is the parents are always heterozygous. (d) no hybrid is produced. 7. The gametophyte of a fomu (a) haploid. (b) photoautotrophic. (c) a structure that produces eggs and/or sperm (d) all of the above 8. A chi-square test is used to (a) determine if experimental data adequately matches what was expected. (b) analyze a Punnett square. (c) determine parental genotypes producing a...
In humans, the allele for black hair (B) is dominant to the allele to brown hair (b), and the allele for curly hair (C) is dominant to the allele for straight hair (c). When a person of unknown genotype is crossed against a straight- and brown-haired individual, the phenotypic 2. ratio is 25% curly black hair 25% straight black hair 25% curly brown hair 25% straight brown hai What is the genotype of the unknown parent? (A) BBCO (B) BbCC...
Question 4 (1 point) Two loci are linked to each other. The Red hair locus is complete dominant in that the dominant allele (R) provides an individual with non-red hair and the recessive allele (r) provides an individual with red hair. The Freckles locus is completely dominant in that the dominant allele (F) codes for freckles and the recessive allele (f) doesn't cause freckles. You often see red hair and freckles occurring together, suggesting the two loci are linked. Provided...
7) In humans, brown eyes (B) are a simple dominant trait over blue eyes (b). What is the genotype of a brown-eyed woman who has a blue-eyed child? A)bb -B)Bb С)ВВ D)BBB E) BbBb 8) The ability to roll the edges of the tongue upward in a U-shape is inherited as a dominant allele at a single gene locus, Which of the following genotypes would produce an individual that can roll their tongue? A)TT only B)Tt only C) only D)TT...
1 point You have a two locus trait with genes A and B, and both parents are heterozygous at both loci. You find that individuals with AABB have very dark hair, while individuals with aabb have white hair. The more a's and b's that are in the genotype the lighter the hair color. This is an example of a monogenic trait with non-additive inheritance non-genetic Inheritance O a polygenic trait with non-additive inheritance O a polygenic trait with additive inheritance...
1. In a monohybrid cross, (a) only one trait is being considered. ib) the parents are always dominant. is the parents are always heterozygous. (d) no hybrid is produced. 7. The gametophyte of a fomu (a) haploid. (b) photoautotrophic. (c) a structure that produces eggs and/or sperm (d) all of the above 8. A chi-square test is used to (a) determine if experimental data adequately matches what was expected. (b) analyze a Punnett square. (c) determine parental genotypes producing a...
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