6. A woman of blood group AB marries a man of blood group A, whose father was group O. What is the probability that a. their two children will both be group A? b. one child will be group B and the other group O? c. the first child will be a daughter of group AB and their second child a son of group B?
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- Two pairs of traits are segregating in a cross. Two parents produce 156 progeny that fall into 4 phenotypes. The numbers of offspring in the 4 phenotypes are 89, 31, 28, and 8. What are the genotypes of the two parents?7. In a certain animal, black fur is dominant to white fur. Determine the possible offspring from crosses between: black fur (B), white fur (b) a. Homozygous black X white Genotype: Phenotype: Genotypic Ratio: Phenotypic Ratio: b. Heterozygous black X heterozygous black Genotype: Phenotype: Genotypic Ratio: Phenotypic Ratio:3. Black coat (B) color in Cocker Spaniels is dominant, while red coat (b) color is recessive; solid pattern (S) is dominant, while spotted (s) pattern is recessive. Create a Punnett square that shows all of the possible offspring of a solid black male (BBSs) mated to a solid red female (bbSs). Include the percentage/ratio of occurrence for each phenotype. Include the percentage/ratio of occurrence for each phenotype.
- 1. If a person's genotype for gene a and gene b is AaBb, what are the possible allelic compositions in a gamete (What alleles for gene a and gene b can be found in a gamete)? 2. Gene p specifies flower color. The dominant P allele specifies purple color, the recessive p allele specifies white color. What is the phenotypic ratio of purple flower : white flower in a monohybrid cross? 3. Gene y specifies seed color. The dominant Y allele specifies yellow color, the recessive y allele specifies green color. Gene s specifies seed skin. The dominant S allele specifies smooth skin, the recessive s allele specifies wrinkled skin. What is the phenotypic ratio of yellow color smooth skin : yellow color wrinkled skin : green color smooth skin : green color wrinkled skin for the offspring of a dihybrid cross? 4. Please consider the cross AABBCC x Aabbcc. What is the probability of producing an offspring with AABbCc genotype? What is the probability of producing an offspring with Aabbcc genotype?1. Determine the genotype and phenotype of the offspring when pink flower is crossed to a white flower. Genotype: Phenotype: Genotype: Phenotype: Genotype: Phenotype: Genotype: Phenotype: There are white (WW) flower offspring and, pink (RW) flower offspring. 2. What happens to the phenotype of the heterozygotes when traits are inherited in an incomplete dominance pattern?1. If the allelic composition of a gene is Aa, the genotype is said to be (homozygous, heterozygous). What is the probability of having "a" allele in gametes? 2. For a genotype of AaBb, what are the possible allele compositions in gametes? 3. What are the possible genotypes and phenotypes ("A" phenotype or "a" phenotype) in the offspring of a monohybrid cross Aa x Aa? 4. If the organism display a dominant phenotype for a trait ("A" phenotype), how does one determine if the genotype is homozygous or heterozygous? Please use the Punnett square to explain. 5. How many possible genotypes are there in the offspring of a dihybrid cross AaBb x AaBb? What are the possible phenotypes for such a cross? What is the phenotypic ratio for AB : Ab : aB : ab? D Focus 72°F DEA F4 PrtScr Insert Hor F5 F6 F7 F8 F9 F10 F11 F12 24 & 3. 8 E R T Y U
- 1. In guinea pig, fur color is determined by one gene, and fur length by another independently segregating gene. The black fur allele (B) is dominant to brown fur allele (b) and the short allele (S) is dominant to long fur allele (s). From progeny listed in the following table, provide the probable genotype for the parents of each cross. Phenotype of Progeny Black short black long brown short Parents Black short X Black short Black short X Brown long Black long X Black long 90 17 0 32 16 35 29 14 0 brown long 8 15 2. A mouse with the genotype BbccEeFf is mated with another mouse with BBCCEEFF genotype. What is the probability of obtaining the following genotype in the progeny? a. BBCcEeFF b. BbccEEFf C. BbccEeFF 12 3. Determine the type of gametes that are formed from the following individuals with the given genotype? A. AaBbCc B. AABBCc C. AABbCe1. In pea plants, yellow color (Y) is dominant over green color (y). A yellow-colored pea plant is crossed with a green-colored pea plant. Half of their offspring is yellow-colored while the other half is green-colored.What is the genotype of the yellow-colored parent? YY O Yy yy The genotype cannot be determined. 2. A scientist discovered an unknown organism in a tropical rainforest. The organism has been identified to possess the following characteristics: (1) multicellular at some point of its life cycle; (2) feeds on decaying organic matter; and (3) has a cell wall made of chitin.Which Kingdom does the unknown organism likely belong to? Kingdom Animalia Kingdom Plantae Kingdom Fungi Kingdom Protista 3. Which statement about ferns is TRUE? Ferns are unicellular organisms. Ferns are nonvascular plants. O Ferns have spores as reproductive structures. Ferns are capable of secondary growth.1. Most of the individuals of a certain wildflower population have white flowers, although a few are purple-flowered. Crosses have demonstrated that allele for white color flower (W) is dominant over the allele for purple (w). a. Give the genotype of a purple-flowered plant, and show the gametes that it would produce as a result of meiosis. b. If two heterozygous whoite-flowered plants are crossed. What fraction of the offspring do you expect to be purple? c. If two purple-flowered plants are crossed, what fraction of their offspring do you expect to be white? 2. In one study, Gregor Mendel crossed yellow-seeded, tall garden pea with a green-seeded, short garden pea. The F1 offspring were all yellow-seeded and tall. Assuming independent assortment of these two genes, what phenotypes and proportions did he fin among F2 offspring when the F1 garden peas are allowed to fertilize themselves? 3. Thorn apples produce either purple (P) or white (p) flowers, and their fruits are either…
- 3. Short-tailed pup distribution. In mice, the dominant T allele results in a short tail. Homozygous T/T genotype is lethal, which means mouse embryos with this genotype die before they are born. Homozygous t/t is normal, with normal tail. A cross between two short-tailed mice produces a litter of 5 pups. a). What are the genotype(s) of the two short-tailed mice used in the cross? b). What are the possible genotypes and phenotypes of the 5 pups? What are their perspective ratio?7. In pea plants, the dominant allele for flower color is yellow (Y), and the recessive allele is white (y). If a homozygous dominant (YY) yellow-flowered plant is crossed with a heterozygous (Yy) yellow flowered plant what will be the possible genotypes and phenotypes of the offspring? Possible genotypes: Possible phenotypes:1. Two normal visioned parents have a color-blind son. Give the genotype of both parents and the son. 2. In cats, the allele (B) produces black color but (b) produces a yellow color. These alleles are incompletely dominant to each other. A heterozygote produces a tortoise shell color. The alleles (B) and (b) are sex-linked as well. Cross a tortoise shell female with a yellow male. a. What percent of their offspring will be yellow? b. What percent of their offspring will be black? c. What percent of their offspring will be tortoise shell? d. Why is it impossible to have a tortoise shell male offspring?