In Drosophila, the genes for ebony body and sepia eyes are on the same chromosome. If s+se+e X s+se+e dihybrids are crossed, what is the maximum number of genotype combinations that can occur? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a 2. 4. C 8 d 16

Match the term with the correct definition or example       Product of a cross between true breeding plants that make yellow peas and true breeding plants that make green peas.   A description of the alleles present in an individual at one or more loci.  Example: MM or Mm or mm.    Example: 11q1. 4-q2. 1", meaning it is on the long arm of chromosome 11, somewhere in the range from sub-band 4 of region 1 to sub-band 1 of region 2.             Under a microscope, these look exactly the same.  The centromere, banding, long arm, short arm, overall length, gene locations, and order of genes are exactly the same.  However, nucleotide sequences in genes on the two chromosomes can differ.      the unit of heredity, the sequence of nucleotides in the exon regions specifies the sequence of amino acids in a particular polypeptide   Brown allele in eye color Red eye in fruit flies Ability to synthesize alcohol dehydrogenase in fruit flies…

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During a practical, a group of biology students are tasked to study the cell cycle of an insect. This insect has the karyotype 2n=6, with genotype Aa Bb Ee HH. The students must draw a G2 cell about to enter meiosis, using red lines for maternal chromosomes, blue lines for paternal chromosomes and black dots to represent centromeres. The drawing provided by the students is shown below.   a) Identify three mistakes the students made when producing this diagram. In your answer only refer to elements already present in the figure. (3) b) This fly is used in a testcross. What is the probability of producing a fly with genotype Aa bb ee Hh?

In the yellow milkweed bug: D – yellow spots on the wings,  d – brown spots on the wings, E – 8 antennae segments, e – 7 antennae segments                                            D d e e    X    D D E e        What F1 phenotypes and phenotypic ratio would result from this cross?

During a practical, a group of biology students are tasked to study the cell cycle of an insect. This insect has the karyotype 2n=6, with genotype Ff Gg Hh KK. The students must draw a cell at the end of telophase of mitosis, using red lines for maternal chromosomes, blue lines for paternal chromosomes and black dots to represent centromeres. The drawing provided by the students is shown below. kt a) Identify three mistakes the students made when producing this diagram. In your answer only refer to elements already present in the figure. b) This fly is used in a testcross. What is the probability of producing a fly with genotype ff Gg hh Kk?

An individual pea plant is heterozygous for two loci: height and seed shape, with the genotype TtRr. These two loci are on different chromosomes and assort independently. What gametes are produced by this plant? Select all that apply. rr RR tr Tr tR tt TR TT TtRr

Show the cross between a plant which is tall and purple, heterozygous for both traits AND a plant which is short and purple; heterozygous for purple flowers. Use the dihybrid template printout from above for this cross. Insert your picture by clicking on the picture frame and ensure that your picture includes your name.

Use the following information about pea plants: S = spherical seeds; s = wrinkled seeds Y = yellow seeds; y = green seeds P = purple flowers; p = white flowers I = inflated pods; i = constricted pods Write the phenotype produced by the following genotypes: PP Pp SS ss SSPp IiPp IIPP

Spotted lanternfly females were crosses with males possessing short wings (sw) ebony body (e) and sephia (s) eyes, which are recessive traits. 1000 offspring were counted, and the results are shown in the table. below. No determination of sex was made. Using proper notation determine the linkage-genotype of the female parent. Determine the sequence of the three genes and map the distances between them. Calculate the COC and interference in the cross and describe what it means. Phenotype ++ e S SW + s + + + sw e + + + S SW e se + sw + #offspring 332 331 111 121 46 56 7 6