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- The observable traits expressed by an organism are described as its _______. a. phenotype b. genotype c. alleles d. zygoteClubfoot 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.A heterozygous individual has _______ for a trait being studied. a. the same allele on both homologous chromosomes b. two different alleles of a gene c. a haploid condition, in genetic terms
- Hello Heliodors! (cont.) Trait B Heliodors are either red (R), yellow (Y) or an intermediate phenotype, orange. What is the genotype of the orange heliodor? СС Сс cc C'CY CRCY CRCRwhen two unlike alleles are responsible for a sin O b. Genetic characters are controlled by pairs of alleles, of which each diploid organism received from each p O c. Two sets of traits are inherited independently ofeach other. O d. If an individual contains a pair of like alleles then all its gametes receive one of that same kind of allele. How many different types of gametes can be formed by individuals of the following genotypes respectively? (a) AaBb, (b) AaBbCc Select one: O a. 2, 4 Оь. 4, 16 O c. 2, 8 O d. 4, 8 O e. 4, 4 Genetics characters that follow partial dominance produce an offspring ratio that corresponds directly to Mendel's p Select one: оа. TrueHello Heliodors! (cont.) Trait B Heliodors are either red (R), yellow (Y) or an intermediate phenotype, orange. What is the genotype of the red heliodor? СС Сс СС C'CY CRCY CRCR
- ***18. Complete this flowchart to show how different alleles can result in different characteristics. In the DNA, different alleles of a gene have a different sequence of > different sequence of transcription > different sequence of in a protein translation > different structure and function of the protein (e.g. normal enzyme vs. defective enzyme) > different characteristics (e.g. normal color vs. albino) inThe IA allele is to the IB allele and to the i allele. codominant; codominant codominant; completely dominant completely dominant; codominant completely dominant; completely dominantTraits 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.…
- A particular allele is mice is lethal with homozygous genotype, however heterozygous mice develop normally. Why does this the lethal allele remain the population? Homozygous mice reproduce more than heterozygous mice. lo is masked in heterozygous mice.. Imagine you purchased an albino mouse (genotypecc) in a pet store. The c allele is epistatic to other coatcolor genes. How would you go about determiningthe genotype of this mouse at the brown locus? (Inpigmented mice, BB and Bb are black, bb is brown.)A dominant gene A causes yellow color in cats. The dominant allele of another gene, R, produces black coat color. When the 2 dominants occur together (A_R_) they make grey. Cats with the genotype aarr create cream color. If a grey male and a yellow female are mated and produce 3 grey, 3 yellow, 1 cream and 1 black offspring what is the genotype of the parents. Show you my work and explain the logic behind.
