A homozygous black Labrador retriever is crossed with a homozygous yellow Labrador retriever. The heterozygous F1 are all black. When these black F1 are intercrossed, the F2 generation displays a phenotypic ratio of 9 black : 3 brown : 4 yellow. Which of the following could represent genotypes of the yellow F2 dogs? Let A and B represent genes at different loci and let the A allele be dominant to a allele; B allele be dominant to b allele.  only aabb  only aaB  A_B_and aaB.  aaB_ and aabbr  only A_ B_  aaB_ and A_bb

Q: Convert the expected phenotypic ratio from Part A into the expected probability for each of the four…

A: Dominant traits Round fruit (R) Red fruit (F) Recessive traits oval fruit (r) Yellow fruit (f)…

Q: White fruit color in squash is due to a dominant allele. Yellow fruit occurs in plants which are…

A: Given  White fruit colour dominant Yellow fruit colour recessive  Anther (male) white fruit colour…

Q: The production of eye-color pigment in Drosophila requires the dominant allele A. The dominant…

A: Inheritance is defined as the process by which genetic information will be passed or transmitted…

Q: The Hairless phenotype in Drosophila is caused by a recessive mutation in the H gene. Wild-type…

A: In the realm of genetics, certain traits and their manifestations can exhibit intriguing…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: Answer: DIHYBRID CROSS : It is the cross made between two traits of an individual.  Phenotypic…

Q: In rabbits, a locus involved in the control of coat colour may be occupied by any of four alleles:…

A: Given that, the locus that is involved in the control of the coat color can be occupied by any one…

Q: Alleles A and a are at a locus on the same chromsome as a locus with B and b. What proportions of…

A: The genes present on the same chromosome cannot assort independently, Rather they tend to be…

Q: In fruit flies, gray is dominant over ebony body color and wild is dominant over curled wings.  A…

A: In genetics, a test cross is a cross that involves an individual of interest, usually with an…

Q: In pigs, the dominant C allele produces a curly tail. c/c homozygotes have straight tails. The…

A: In this question, we are given two genes, C and W which are present on the same chromosome. C gene…

Q: In certain breeds of chicken, the appearance of the comb (a fleshy growth or crest on the top of the…

A: A trait is a characteristic feature that is unique to particular individual. Each trait is…

Q: The spherical seed allele (S) is completely dominant over the dented seed allele (s). If the alleles…

A: In a plant , there are two types of traits.  It includes :-  A ) Trait for seed shape  B ) Trait for…

Q: In minotaurs, an allele for round horns (R) is dominant to an allele for straight horns (r). At a…

A: Dominant allele frequency (p) =.4 p + q = 1 q = 1 -.4 =.6  p 2  +q 2 +  2pq  = 1    The proportion…

Q: Consider five unlinked genes: a, b, c, d, e are the recessive alleles, and A, B, C, D, E are the…

A: Quintuple heterozygote individuals are individuals who have inherited five different versions of a…

Q: The coats of Labrador retrievers are black, chocolate, or yellow in colour. Two genes control coat…

A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: In guinea pigs, black fur is dominant over brown fur, and short hair is dominant over long hair.…

A: Answer: Mendel was the scientist who proposed or discovered the LAW of INHERITANCE. There are three…

Q: In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants with red and…

A: Recombination : When a new trait is formed due to the genetic exchange. Recombination frequency is…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: Dihybrid cross: A dihybrid cross occurs between two organisms that are identical hybrids for a given…

Q: In chickens, comb shape is determined by genes at two loci (R, r and P, p). A walnut comb is…

A: A rose comb is produced when at least one dominant gene is present at the first locus and two…

Q: In a species of the cat family, eye colour can be gray, blue, green or brown, and each colour is…

A: Given:

Q: CROSS 1 2 3 4 ROOSTER walnut Walnut Walnut walnut CROSS 1 HEN Walnut Single 2 3 4 pea walnut What…

A: Given: In poultry, the shape of the comb may be rose (A_bb), pea (aaB_), walnut (A_B_), or single…

Q: In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants with red and…

A: An allele can be recessive or dominant & in the given question two pairs of allele are mentioned…

Q: In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants with red and…

A: The recombination frequency is measured for the calculation of the distance between the two genes…

Q: among a certain breed of dog, short hair is dominant to long hair and dark coat is dominant to white…

A: The quest explores how a particular dog breed with particular dominance tendencies inherits two…

Q: owl, barring (B) is sex-linked and dominant, the recessive allele (b) producing solid black color…

A: Sex linked character is usually present on the sex chromosomes which are either in the form of x or…

Q: In rats, hair color is either gray (G), black (g), or white. The white color is produced due to an…

A: In genetics, epistasis is defined as a non mendelian theory in which the expression of more than a…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: According to the concept of genetic linkage, when genes are far apart or on the different…

Q: In birds, wingspan is determined by two genes, one with complete dominance of one allele over the…

A: The mean of the data is determined by  Mean = ∑total number of valuesvalue Mean = (20 + 19.6 + 18.3…

Q: What is the genetic distance between red petals and waxy texture?

A: Gene distance  Gene distance means the number of bases present between two gene. On the basis of…

Q: The correct answer is : codominance and incomplete penetrance because in codominance, heterozygotes…

A: Dominance is a characteristic which is followed when both the alleles or at least one the allele is…

Q: In a different population of mice in New Mexico, coat coloration is influenced by a single gene…

A: The skin color is encoded by the B gene.

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: The test cross is another fundamental tool devised by Mendel . In its simplest form, a test cross is…

Q: FRR) were crossed to pure breeding plants with yellow and oval fruit (ffrr). The red and round F1…

A:

Q: In peanut, a plant may be of the forms "bush" or runner". 2 different strains of peanut, V4 and G2,…

A: Non - Mendelian inheritance is a type of inheritance in which genes does not set apart or inherited…

Q: The phenotype of spotting in dogs (A) is dominant to no spots (a).  When 2 heterozygous spotted dogs…

A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: A test cross is a way to explore the genotpye of an organism. When a dominant phenotype i.e…

Q: What is the F1 phenotyphic ratio of a cross between a black and white cats? Numerical anwers only.…

A: Given, the Genotype of the black cat will be= BB, The genotype of white cat= bb and  The Genotype of…

Q: In horses, two different genes affect the coat. One gene which codes for coat colour has 2…

A: Genetics is a branch of biology involved in the study of genes, genetic variation, and heredity in…

Q: Wolves are observed having Grey fur (G) dominant to Black fur (g), Blue eyes (B) dominant to Yellow…

A: DNA is a genetic material that stores hereditary information. It consists of nucleotides that are…

Q: In mice, albinism (g) is recessive to grey coat colour (G). A grey mouse mated with an albino mouse.…

A: Each gene has two alternative forma known as alleles, which code for different versions of a…

Angiosperm Reproduction

The process of sexual reproduction in flowering plants is known as angiosperm reproduction. In flowering plants, reproduction begins with pollination, or the transfer of male gametes (pollen) from the male reproductive organ (anther) to the female reproductive organ (pistil), and ends with fertilization of the female gametes (egg), which produces a zygote, which then grows to become a mature plant.