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- Which statement about a dihybrid cross is true? O 1. It results in a genotypic ratio of 2:1. 2. It involves genes located on the sex chromosomes. 3. It results in offspring of lower quality than that of the parents. 4. It results in two different phenotypes in the F2 generation 5. It is a cross between identical double heterozygotes.Consider a diploid cell from an unknown organism that undergoes meiosis. The four gametes produced have 8, 8, 7, and 5 chromosomes. When did nondisjunction occur? a. Only meiosis I b. Mitosis c. Meiosis I and II d. Nondisjunction did not occur e. Only meiosis II Clear my choiceIn a species the haploid number of chromosomes is 4. Independent assortment has the possibility of producing different gametes. 8. 24 O O O
- What is it called when chromosomes fail to separate properly during meiosis? A. Nondisjunction B. Karyotype C. Chromosomal separation failure D. Inappropriate separation E. Karyokinesison 27 If an organism egg gamete has ten chromosomes got fertilized, there will be different offspring possible combinations pas d out of Select one: O a. 10 e question Ob. 16 Oc. 32 O d. 100 e. 1024What is the reason for doing a test cross? a. to identify heterozygous individuals with the dominant phenotype b. to determine which allele is dominant and which is recessive c. to identify homozygous recessive individuals in the F2 d. to determine if two genes assort independently
- Organism X has the genotype Ccdd. How many different types of gametes can it make and in what proportion? * A. 3 Cd 1 cd B. 1 CD: 1 Cd : 1 cD 1 cd C. 1 Cc : 1 dd D. 1 Cd 1 cd A human female "carrier" who is heterozygous for the recessive, sex-linked trait hemophilia (XHXH), marries a normal male (XHY). What proportion of their male progeny will show the trait? A. 1/4 B. 1/2 C. 0 D. AllTrisomy 21, or Down's syndrome, is the result of which event occurring during the meiotic process? a. Crossing over b. Nondisjunction c. Metaphase d. Mutation O e. Interpolation QUESTION 51 At the end of Meiosis I, cells are produced, and those cells are а. 1; haploid O b.2; diploid с. 2; haploid d. 4; diploid O e. 4; haploid O O O O OWhat cellular process is responsible for genetic recombination? a. The independent alignment of homologous pairs during meiosis I b. Separation of the homologues in meiosis I c. Separation of the chromatids during meiosis II d. Crossing over between homologues
- Consider a diploid cell from an unknown organism that undergoes meiosis. The four gametes produced have 8, 8, 7, and 5 chromosomes. When did nondisjunction occur? a.Meiosis I and II b.Only meiosis I c.Mitosis d.Only meiosis II e.Nondisjunction did not occurin a cell with gene for A/a allels and B/b alleles are on the same chromosomes what are the possible different kinds of gametes produces by meiosis? Assume one chromosome has A-B, and other homologous chromosome has a-b and no crossing over orccurs. (choose one answer only) 1. Ab 2. AB 3. AB,Ab,aB,ab 4. Ab,aB 5. ab 6. AB,ab 7. aBsigamA 1 zizoiam to 12 Question 6: to gysome odi dodal no stuz sule iool gargli bregnirhsord ord et mowiod banor Orcs are humanoid goblin creatures that inhabit middle earth with n=19.om Mows no estalle A. What is probability that two gametes from the same female orc will be genetically identical o (assuming no crossing over in meiosis I)? B. What is the probabiliy that two gametes from the same male orc will be genetically identical? doso no apkolle ils to asqyronog lode.JS'insunq moit booubong 2019msg oldizzoq oli word.H bra esmosomoads incridmooon-non latroneg nistnoo astoring raidw stanibal alusslom AMO asmozomouto Jannidmooon\instoq-non nintos doid D. What is the probability that two full sibling orc (same mom and dad) will be genetically identical (assume no cross over in meiosis I)? 12