BIO 1406/07 W/CONNECT/LM NEW >IC<
16th Edition
ISBN: 9781260075762
Author: Raven
Publisher: MCG CUSTOM
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Textbook Question
Chapter 12, Problem 6A
Mendel’s model assumes that each trait is determined by a single factor with alternate forms. We now know that this is too simplistic and that
a. a single gene may affect more than one trait.
b. a single trait may be affected by more than one gene.
c. a single gene always affects only one trait, but traits may be affected by more than one gene.
d. a single gene can affect more than one trait, and traits may be affected by more than one gene.
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Which of the following is false?
a. the pollen grain shape was studied by Mendel.
b. Mendel believed that the characteristics of pea plants were determined by the inheritance units or factors from both parents.
c. An allele is one of several possible forms of a gene.
d. When the genotype consists of a dominant and recessive allele, the phenotype will be like the dominant allele.
Assume a large population has two alleles, B and b, for a particular trait that displays a normal
pattern of Mendelian inheritance. If 49% of the population displays the recessive phenotype for this
trait..
a. What percent of the population would be heterozygous (Bf)?
b. What percent of the population would be homozygous dominant (BB)?
c. What percent of the population would display the dominant phenotype?
d. What is the frequency of the recessive allele (b) expressed as a percentage?
e. What is the frequency of the dominant allele (B) expressed as a percentage?
Place the number in the space provided without any other symbols.
ME
Which if the following is not among Mendels principles?
a. There are factors that is transmitted from parent to offspring?
b. There are only two kinds of traits, dominant and recessive
c. Genes resides in the chromosome
d. Pair of single traits segregate randomly
Chapter 12 Solutions
BIO 1406/07 W/CONNECT/LM NEW >IC<
Ch. 12 - What property distinguished Mendels investigation...Ch. 12 - The F1 generation of the monohybrid cross purple...Ch. 12 - The F1 plants from the previous question are...Ch. 12 - In a cross of Aa Bb cc X Aa Bb Cc, what is the...Ch. 12 - An organisms __________ is/are determined by its...Ch. 12 - Phenotypes like height in humans, which show a...Ch. 12 - Japanese four oclocks that are red and tall are...Ch. 12 - If the two genes in the previous question showed...Ch. 12 - What is the probability of obtaining an individual...Ch. 12 - Prob. 4A
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In a trait that follows Mendelian rules of inheritance, what is the only way an organism can have the recessive phenotype? A. By having the homozygous recessive genotype B. By being heterozygous for that genotype C. It is not possible to get the recessive phenotype in Mendelian genetics D. If one parent is homozygous recessive for that trait, any offspring are guaranteed the recessive phenotype E. By being homozygous dominant for that genotypearrow_forwardWhich of the following statements correctly describes the Law of Independent Assortment? a. A large Punnett square can be used to predict the outcome of a parental cross involving two traits. b. Non-allelic genes do not affect each other if they are located on separate chromosomes. c. Sometimes all alleles lack dominance, which leads to a blending of traits. d. The dominant allele is represented with an uppercase letter and the recessive allele is represented with a lowercase letter.arrow_forwardMendel crossed yellow-seeded and green-seeded pea plants and then allowed the offspring to self-pollinate to produce an F2 generation. The results were as follows: 6022 yellow and 2001 green (8023 total). The allele for green seeds has what relationship to the allele for yellow seeds? A. co-dominant. B. dominant C. semi-dominant D. incompletely dominant E. recessivearrow_forward
- If Mendel chose to study inheritance of height in human, would he have likely discovered the same princeple of heredity that he discovered in working with pea plants? A. Yes, because human height is a continuously varying trait, just like the traits Mendel studied in pea plants. B. No, because the generation time in humans is relatively long compared with pea plants. C. Yes, because the principles of segregation and independent assortment also apply to human genes. D. No, because human height is not genetically determined.arrow_forwardWhich of the following does not cause a modification of Mendelian ratios? a. Sex-linked inheritance b. Multiple alleles C. None d. Maternal inheritancearrow_forwardAll are true about Mendel’s law of segregation except A. All F1 generation will inherit dominant characteristics. B. At a given locus, a diploid parent can only contribute one allele to its offspring. C. During gamete formation, segregation of the alleles of one allelic pair is independent of the segregation of alleles of another pair. D. The genotype ratio in F2 generation is 1:2:1arrow_forward
- Which of the following statements is false?a. Mendelian inheritance patterns obey the law of segregation.b. Mendelian inheritance patterns obey the law of independentassortment.c. All inheritance patterns show a simple dominant/recessiverelationship.d. None of the above is falsearrow_forwardWhat is Mendelian inheritance? a. Mendelian genes code an entire phenotype so that children will not be clones of their parents. b. Mendelian genetics are those genes that code for dominant or recessive illnesses but only if no polygenic traits cancel them out. c. Mendelian genes sit at one loci with one allele from Mom and one allele from Dad. d. Mendelian genetics is when two or more genes at two or more loci express one traitarrow_forwardFreckles are considered to be a dominant trait. If a mother without freckles and a father without freckles have a child, what are the odds that the child will have freckles? a. 1 in 4 chance (25%) b. 2 in 4 chance (50%) c. 3 in 4 chance (75%) d. It is impossible for the child to develop freckles (0% chance).arrow_forward
- Which of the following statements correctly describes the Law of Independent Assortment? Select one: a. Sometimes all alleles lack dominance, which leads to a blending of traits. b. The allele a gamete receives for one gene does not influence the allele received for another gene, if the two genes are located on different chromosomes. c. The dominant allele is represented with an uppercase letter and the recessive allele is represented with a lowercase letter. d. A large Punnett square can be used to predict the outcome of a parental cross involving two traits.arrow_forwardIn a cross between short and tall plants, the F1 are all as short as their short parents. In the F2, roughly three quarters of the plants are short, while the rest are tall. Which is most accurate? a. Inheritance is particulate and tall is dominant to short. b. Inheritance is particulate and short is dominant to tall. c. Inheritance is particulate and neither trait is dominant. d. Inheritance is blending. e. Inheritance is not Mendelian.arrow_forwardFruit flies are very useful model organisms that have been used to study genetics. One mutant recessive trait in fruit flies is called "eyeless" because it causes flies to have no eyes. Cross an eyeless fly with a homozygous normal fly. a. Draw the Punnett square. b. What is the genotyoe ratio of the offspring? c. What is the phenotype ratio of the offspring? d. What genetic problem is this? (monohybrid, dihybrid or multiple allele)arrow_forward
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