An allele for a specific trait (mark all that apply) O a. is an alternative form of the gene Ob.can influence phenotype Oc. can influence genotype Od. won't influence genotype or phenotype O e. resides at the same place on both maternal and paternal chromosomes

An allele for a specific trait (mark all that apply) O a. is an alternative form of the gene Ob.can influence phenotype Oc. can influence genotype Od. won't influence genotype or phenotype O e. resides at the same place on both maternal and paternal chromosomes

Name: An allele for a specific trait (mark all that apply)O a. is an altern
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Description: An allele for a specific trait (mark all that apply)O a. is an alternative form of the geneOb.can influence phenotypeOc. can influence genotypeOd. won't influence genotype or phenotypeO e. resides at the same place on both maternal and paternal chro

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter9: Patterns Of Inheritance

Section: Chapter Questions

Problem 8SQ

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Clubfoot is a common congenital birth defect. This defect is caused by a number of genes but appears to be phenotypically distributed in a noncontinuous fashion. Geneticists use the threshold model to explain the occurrence of this defect. Explain this model. Explain predisposition to the defect in an individual who has a genotypic liability above the threshold versus an individual who has a liability below the threshold.
Traits are are controlled by a single gene, such as corn color, can be used fo predictability of trait in inheritance in humans also. This is especially import for parents who may carry alleles that code for diseases. Parents can predic probabilities that their child might inherit a disease if they know their own genotype. Parents that are carriers (heterozygous) may not show disease, bu can still pass on a disease allele. Read the scenario below (in bold). Using a separate piece of paper and draw out a Punnett square, with required information (questions 1-5). The letter D will be used to represent the domina (healthy) allele. Tom and his wife Julie are both carriers for cystic fibrosis, an autosomal recessive disease. Draw a Punnett square and be sure to include the following information for full credit: 1. Place the parents alleles at the top and on the left side. 2. Write in the allele crosses inside the Punnett squares. 3. Write out the genotypes probabilities for an offspring. 4.…
The crossing of an individual with dominant trait with an individual with the known recessive expression of the given trait to determine if the dominant is homozygous or heterozygous is a procoss known as: O Testcross Pedigree charting O Recombination O Pure breeding
The part that is missing is where the traits for things like colorblindness and hemophilia exist. This meansthat if you have XY chromosomes, you are missing alleles on one of the chromosomes. So whatever alleleis on your X is expressed regardless of if being dominant or recessive. These X-Linked Traits have a specialway to note the alleles.X-Linked alleles use X and Y as their base and then the allele that notates the trait is in the top, rightcorner. For instance: Phenotype(appearance) Genotype(alleles) XY with Hemophilia XhY XX withouth Hemophilia XHXh Notice that the female has two X’s so has 2 alleles. She is not a hemophiliac, but is carrying the trait.That means she can pass the trait to her offspring.Why don’t you cross those two parents here and find the outcome:Parents: Offspring: Genotypes:Phenotypes: Is there a chance of producing an XY offspring with hemophilia? Explain your answer Will…
More Crosses with Pea Plants: The Principle of Independent Assortment Think about this one carefully. Albinism and hair color are governed by different genes. A recessively inherited form of albinism causes affected individuals to lack pigment in their skin, hair, and eyes. In hair color, red hair is inherited as a recessive trait and brown hair is inherited as a dominant trait relative to red hair. An albino woman whose parents both have red hair has two children with a man who is normally pigmented and has brown hair. The brown-haired partner has one parent who has red hair. The first child is normally pigmented and has brown hair. The second child is albino. a. What is the hair color (phenotype) of the albino parent? b. What is the genotype of the albino parent for hair color? c. What is the genotype of the brown-haired parent with respect to hair color? Skin pigmentation? d. What is the genotype of the first child with respect to hair color and skin pigmentation? e. What are the possible genotypes of the second child for hair color? What is the phenotype of the second child for hair color? Can you explain this?
In sweet pea plant, an allele for purple flowers (P) is dominant when paired with a recessive allele for red flowers (p). An allele for long pollen grains (L) is dominant when paired with a recessive allele for round pollen grain (l). Bateson and Punnett crossed a plant having purple flowers/long pollen grains with one having white/flowers/round pollen grains. All F1 offspring had purple flowers and long pollen grains. Among the F2 generation, the researchers observed the following phenotypes: 296 purple flowers/long pollen grains 19 purple flowers/round pollen grains 27 red flowers/long pollen grains 85 red flowers/round pollen grains What is the best explanation for these results?
Epistasis is most accunately defined as: A.the genotype of the mother determining B. the alleleo of one gene Rraoking the dominant alleles of another C. inactivation defined as: the offaing phenotype of of the allele from one parent and express ion from the other D.la single gene affecting a single hrait E.the inhaitance of hoo or more chromosome genes close on the same together
Date Name Punnett Square Practice Worksheet 1) For each of the genotypes (AA, Aa or aa) below determine what the phenotype would be. Purple flowers are dominant to white flowers. PP Pp PP Hairy knuckies are dominant to non-hairy knuckles in humans. Hh hh HH Bobtails in cats are recessive. Normal tails are dominant. Tt tt TT 2) For each of the following write whether it is homozygous dominant, heterozygous or homozygous recessive. AA gg Pp Ii TT Use the following information for questions 3-5: In dogs, the gene for fur color has two alleles. The dominant allele (F) codes for grey fur and the recessive allele (f) codes for black fur. 3) The female dog is heterozygous. The male dog is homozygous recessive. Figure out the percentage or ratio of possible phenotypes and genotypes of their puppies by using a Punnett Square. Plae the oileles for the mule parent helm One alele n e h lie: % of possible Genotypes: FF Plar the alfele f he emle p r ti side One elleir on ch tine Ff: % of possible…
A A EE v E v E E 12 Aa v AaBbCcDdE AaBb AaBbCcDdEe AaBbCcDdEe AaBbCcD ab x, х, х* x A evAv Normal No Spacing Heading 1 Heading 2 Title Styles Pane Dicta Q4. Assume eye colour in humans is controlled by a pair of alleles of a gene where the allele giving brown eyes is dominant to the allele giving blue eyes. Both parents of a blue-eyed man, John, were brown-eyed. He married a brown-eyed woman, Sara, whose father had brown eyes and mother blue eyes. Sara had a blue-eyed sister. John and Sara had a brown-eyed child. 1) Fill in the boxes and circles on the family tree below to show the genotype of each individual. John Sara Q5. When Mendel crossed a large number of tall pea plants with short pea plants all E1 plants
r blindness is recessive, x-linked trait. Ia marriages between a man who is colorblind and a woman a carrier what percentage of the children can be expected to be sons who are not color blind? What entage of the children can be expected to be daughters who are carriers? What percentage of the children can be expected to be daughters who are not carriers at all? 42 Se
f you have a recessive phenotype for a given trait, but neither of your parents has that phenotype, what can you say about the genotype of your parents for that trait? Both of your parents have to be hetorozygous One of your parents might be homozygous dominant but the other has to be hetorozygous Both of your parents must be homozygous dominant Both of your parents have to be homozygous recessive
A botanist has acquired agroup of sweet pea plants. Allef the plants have yellow pea pods he recessive trait, ecept for one, which has green pea pods he deminant trat. Pe pod color is a trait cused by asingle gene. n thistutorial, you wil determine hew the botanist can identify the genotype of the green pea pod, and how this relates to Mendel's l and meios There are two pods of peasa geen one dominant trait and a yellow one ecesse t A How could the botanist best detemine wether the gentyoe of the preen pod planthemane or heterorygous? A Cross the green pod plantwith he geenpod plant a Cross the green pod plant witha yellowpod plant. C Self polinate the green pod pant Punnett squares can be used to predet the bwo possible outcomes of the botanist's test eros, In the space below, diagrem the result if the nnown plant hemonveous (GG) and denote the expected phenotypes. Then diagram the resuit ifthe uninen plent s heterongous and denata the pected phenotypes