The following question refers to Drosophila that are heterozygous for three different genes A, B, and C all located on chromosome I, with the alleles arranged as shown here: A B In contrast to most animals, crossing over (recombination) does not occur during meiosis in male Drosophila, but does occur in female Drosophila. Draw all the possible variations of chromosome I that you would expect to find in sperm from males with the above genotype an do the same for eggs produced by females of the same genotype. * 9.

Q: Imagine Drosophila genes C, D, and E are autosomal genes located close to each other on the same…

A: If many genes are located on the same chromosome then the crossing over between them will be reduced…

Q: in metaphase 1 of meiosis, the homologous chromosomes line up side by side along the equator so that…

A: Mitosis and meiosis are two types of cell divisions. Mitosis takes place in the somatic cell and…

Q: Two plants in a cross were each heterozygous for two gene pairs (AB /ab) whose loci are linked and…

A: Linkage is an exception to independent assortment. Distance between two genes = recombination…

Q: A woman has two alleles of gene M (M and m), and two alleles of gene N (N and n). Both genes are on…

A: As per our guidelines, we are supposed to answer only three sub-parts. Kindly repost the question…

Q: In Drosophila, the X chromosomes may become attached to one another (XXn ) such that they always…

A: Sex determination in Drosophila -  There is a chromosomal basis of inheritance occurs which is based…

Q: Both the domestic Muscovy duck and the domestic duck (Anas platyrhynchos domesticus) both have a…

A: Cells are the basic structural units of the body. they are also the functional units that perform…

Q: Assume that a diploid cell (2N=8) contains 4 pairs of chromosomes (3 pairs of autosomes and 1 pair…

A: The gametes are formed by the process of meiosis that is subdivided into two stages called meiosis I…

Q: A male Drosophila from a wild-type stock is discovered to haveonly seven chromosomes, whereas…

A: In male drosophila, one member of chromosome IV has translocated to the distal end of Chromosome II.…

Q: A wild-type chromosome has the following segments: A B C • D E F G H I Researchers have found…

A: Chromosomal aberrations are changes in the number and arrangement of genes in the chromosomes. They…

Q: In Drosophila, the genes ct(cut wing margin), y (yellow body), and v (vermilion eye color) are…

A: Crossing over of chromosome during meiosis is normal process occurring so that there can be…

Q: Two different genes are located on the same chromosome in rabbits. A particular female rabbit is…

A: Genes on different chromosomes are inherited independently of each other because each pair of…

Q: The order of the genes on a plant chromosome is A, B, C, where A and B are located 10 cM apart and B…

A: Genes A and B are located 10 cM apart and B and C are located 3cM apart. Hence, S.C.O for A and B =…

Q: In a diploid organism of 2n=10, assume that you can label all the centromeres derived from its…

A: Meiosis creates gametes such as egg and sperm cells. During meiosis, the genetic information is…

Q: An individual heterozygous for a reciprocal translocation possesses the following chromosomes: A B •…

A: Translocation is caused Due to separation of a chromosome segment and its union to a non-homologous…

Q: The genes for mahogany eyes and ebony body are approximately 18 map units apart on chromosome III in…

A: In Drosophila + indicates wild-type allele for any gene, m = mahogany  e = ebony.Female parents are…

Q: In elegans, lon-2 and unc-2 are recessive mutations that are 8 map units apart on the X chromosome.…

A: A map unit is defined as the distance between two linked gene pairs where 1% of the products of…

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.