1. In Drosophila melanogaster (fruit fly) experiment, if we are going to cross male and female red-eyed fruit flies, we have the resulting offspring ratio of 50% red-eyed for female, 25 % for red-eyed male and 25% for white-eyed male. Females which are either homozygous or heterozygous for a trait still expressed eye redness whereas males can easily be affected. Why is this so?   a. Females are the carriers of a gene for eye redness b. Y chromosome is responsible for red eyes in fruit flies,   c. The gene for eye redness is an X-link dominant trait, d. Having a red-eyed trait is dominantly expressed by females

Q: 2. From previous research findings, you know that the distance between the gene for eye colour and…

A: In flies , there are two types of traits . These are:-  I ) Trait for eye colour :- In this ,purple…

Q: In pea plants, purple flower color is dominant over white flower color. If you had a purple flowered…

A: Trait is a characteristic feature unique to a particular individual . A monohybrid cross is a cross…

Q: 1. In the fruit fly, very dark febony) body color is determined by the recessive e allele. The e+…

A: An allele is a variant form of a gene.

Q: please answer questions 4 a, b, c, and d.

A: A) The possible gametes of both the parents are BW, Bw, bW, and bw.B) The Punnett square showing the…

Q: 3. In mice, black fur (B) is dominant to white (b). At a different locus, a dominant allele (A)…

A: According to Mendelian inheritance, a single character is controlled by one or more pairs of…

Q: 4. Summer squash color depends on the interaction between two genes. One gene (B) inhibits the…

A: Gene interaction is one of the exceptions to the Mendel's law of inheritance.

Q: 1.A plant can produce either a white flower or a purple flower, with the purple flower allele being…

A: The Punnett square is a square chart used to forecast genotypes in a cross or reproduction…

Q: 3) A. How are the following proteins involved in cell division: condensing, cohesin, kinetochore…

A: The genotype is a combination of alleles of a gene that gives a person unique characteristics.…

Q: 4. In Drosophila melanogaster the wild-type eye colour is dark red. A pure-breeding mutant strain…

A: Inheritance or heredity is the passing-on of one trait form the parents to the progeny by either…

Q: 2. If an A a BBC cdd male mates with an A a B b CcDd female. (a) What is the maximum number of…

A: In genetics the genes control the hereditary units of life. The alleles are the alternative forms of…

Q: 5. The Flemish breed of rabbits have an average weight of 3600 grams. The Himalayan breed has a mean…

A: Genes store genetic information in the form of DNA, which may be converted into functional proteins…

Q: 2-Female Drosophila heterozygous for three recessive mutations e (ebony body), st (scarlet eyes),…

A: Introduction Homozygous means that you inherit the same version of the gene from both parents,…

Q: 5. In Drosophila flies, the allele b gives a black body, and the allele b* gives brown, the…

A: Introduction The term allele refers to a variant of a gene. It is normal in genetics for genes to…

Q: please answer questions 7 a, b, and c.

A: The branch of biology that deals with the study of genes, heredity and genetic variations are termed…

Q: 1. Fur color of rats is determined by the pathway below. The mating between brown rats of identical…

A: Genotype can be defined as the collection of all the genes present in the body. It is consists of…

Q: 2. In Drosophila sp. Red eyes are dominant over white eyes. Normal wings are dominant over vestigial…

A: Let R allelle encodes red eye and it is dominant over r allele.  N encodes normal wing and it is…

Q: 4. Black body and vestigial wing in Drosophila are controlled by recessive alleles, b and vg,…

A: Dominant alleles - b+ and vg+ grey body with normal wing. Recessive alleles - b and vg black body…

Q: What was the hypothesis of the X-linked cross conducted in the lab (between white-eyed female and…

A: White eye color in drosophila is an x linked recessive mutation that causes phenotype change. These…

Q: 2. a. A Drosophila male from a true-breeding stockwith scabrous eyes was mated with a female from…

A: Hello there! As you have posted multiple questions, we are answering only the first question. If you…

Q: please answer question 6.

A: Alleles are the form of genes which occupy same loci on the homologous chromosomes. There are at…

Q: 2. You testcrossed your eel, which is heterozygous EeRr (E = electric, but e gasoline powered. R…

A: There are 4 genes :-  E gene for electric  e for gasoline powdered R for rough  r is for slimy.…

Q: B. In fruit fly, Drosophila, the genes for vestigial wings, white eyes, and black body ar linked.…

A: If the genes are located on the same chromosome then they are classified as linked genes. In this…

Q: 5. In cattle, roan color (mixed red and white hairs) occurs in the heterozygous (Rr) offspring of…

A: Two colors, blue and yellow, when mixed together give the color green. This is what was thought to…

Q: 2. In a certain rose variety, thorny stems ( t) are recessive to smooth stems (T) and having white…

A: To determine whether the heterozygote is in coupling or repulsion, just look at the parental…

Q: 4. In Drosophila, three autosomal, recessive mutations are ebony body (e), sepia eye color (s), and…

A: In genetics, crossing over occurs in a chromosome, during the prophase stage of meiosis. During this…

Q: mutant females with wild-type males, or (ii) mutant males with wild-type females, or (iii) both…

A: A test cross is a cross between a homozygous recessive individual with a heterozygous individual.…

Q: 0. In Drosophila, the gene for cinnabar eye color is onchromosome 2, and the gene for scarlet eye…

A: The genes for cinnabar eye and scarlet eye are recessive to wild-type. The Drosophila flies with the…

Q: Wolves sometimes have black coats with blue eyes. These two traits are controlled by genes on…

A: Dominant refers to the relationship between two versions of a gene. Individuals receive two versions…

Q: 6. A plant breeder crossed.a red flowered hibiscus plant with a yellow flowered hibiscus, offspring…

A: Incomplete dominance   When neither of the Alleles are dominant , then incomplete dominance is said…

Q: 4. In cattle, polled (absence of horns) is dominant over horned and roan is the result of the…

A: Let us consider, H is the polled allele (hornless) and h is the allele that represents presence of…

Q: You cross a true-breeding yellow-bodied, smooth-winged female fly with a true-breeding red-bodied,…

A: Let B encodes red body. It is dominant over yellow body  The W encodes smooth wings and it is…

Q: 1. Consider a locus having two alleles Aj and A2, If the homozygote A1A1 and the heterozygote A1A2…

A: Introduction :- The relative frequency of an allele at a specific locus in a population, expressed…

Q: 0. In humans, dark hair (D) is dominant over blondness (d), and color blindness (c) is a sex-linked…

A: Color blindness is typically an inherited genetic condition in which individuals have a decreased…

Q: 1. The height of a wheat plant is determined by several genes. In a variety the minimum size is 12…

A: The test cross is another basic tool designed by Gregor Mendel. In its simplest form, a test cross…

Q: 7. Purebred lines of wild-type fruit flies (gray body and normal wings) are mated to flies with…

A: Recombination results formation of new characters in organism. This is the specificity of meiosis.

Q: please answer 6 a and b.

A: Inheritance is the process of transmission of traits from parents to offspring. Traits are…

Q: In guinea pigs, black hair (B) is dominant to brown hair (b) and short hair (H) is dominant to long…

A: This is a dihybrid cross in which the guinea pig has two genes. Hair colour is coded by one gene,…

Q: 1.In Drosophila melanogaster body color is controlled by one gene while wing shape is controlled by…

A: According to the Mendelian inheritance one gene contain two alleles and one is dominant and the…

Q: 1. Consider a locus having two alleles Aj and A2, If the homozygote A¡A¡ and the heterozygote A¡A2…

A: Frequency of an allele refers to how frequently a particular allele appears in a population.

Q: 1. In Drosophila, yellow body is due to an X-linked gene (XY) that is recessive to the gene for grey…

A: Heterozygous gray female represented as- X+ Xy Yellow male- XyY   X+ Xy XY X+ Xy (grey, as…

Q: 3) In the snail Capaea nemoralis, an autosomal allele causing a banded shell (B³) is recessive to…

A: The banding and colour are linked genes on the same chromosome. But there are no crossing overs.

Q: In rabbits, mono-colored fur (F) and straight ears (E) are dominant over spotted-fur and floppy…

A: Given: In rabbits, mono-colored fur (F) and straight ears (E) are dominant over spotted-fur (f) and…

Q: 2. In cats, the allele (B) produces black color but (b) produces a yellow color. These alleles are…

A: Need to find the answers for the given genetics questions.

Q: 1. Morgan hypothesized that the eye color gene in Drosophila is located on the X chromosome because…

A: Morgan who is an embryologist started extensive research on Drosophila melanogaster heredity…

Q: 1. Acurly haired person and a straight haired person mate and all their offspring have wavy hair…

A: Given  Genotype of black bird = BB  Genotype of white bird = B'B'   Co dominance  A condition where…

Q: 1. The inheritance of short versus long coat length was investigated in horses from a population in…

A: Dominant allele is the one which is able to express itself in the heterozygous condition.

Q: 4. The flowers of 4 o'clock plants may be red, pink or white. Reds crossed to whites only produced…

A: Mendel uncovered the fundamental laws of heredity. His experiments demonstrated that the inheritance…

Q: 6. ) In mice, an allele for apricot eyes (a) is recessive to an allele for brown eyes (a*). At an…

A: Introduction The relationship between two versions of a gene is referred to as dominant. Each parent…

Q: n Drosophila, gray body color is dominant to ebony body color, while long wings are dominant to…

A: Drosophila melanogaster is commonly known as Fruit fly

Q: In cats, long hair is recessive to short hair. A homozygous short haired male is mated with a long…

A: Hi, Thanks For Your Question.  Answer : Let Do Some Trait Coding First : Let Us Assume, Trait For…