in a test cross, a pure-breeding plant is crossed with a plant suspected to be heterozygous (Aa). what is the gentype of the pure-breeding plant

Q: What is the probability of producing a child that will phenotypically resemble either one of the two…

A: A)

Q: In a test cross, peas of an unknown genotype are crossed with peas of a known genotype. In this…

A: Test cross is a cross between organisms of an unknown genotype and a recessive parent. It is a…

Q: Male cats are either black (B) or orange (O). Females are black, orange, or calico, which has…

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

Q: When a white guinea pig is crossed to a yellow guinea pig, all the progeny are cream colored. From a…

A: In genetics, any gene has two alleles pairs viz. Dominant or Recessive. The allele which gets…

Q: The predicted outcome of the F1 cross is diagrammed in the Punnett square shown in the figure, where…

A: option (b) 1,2,3 have dark leaves.

Q: In a parental cross of a ADHL disease trait, where the father is affected and the mother is…

A: ADHL disease is a autosomal dominant trait

Q: If Y is the allele for the dominant yellow seed color and y is the allele for the recessive green…

A: An individual receives two variants of each gene from each parent, which are known as alleles. These…

Q: These genotypes are crossed: AaBbCcdd x AabbCcDd. What will the proportion of the following…

A: The proportion of the AAbbCcdd: 1/4*1/2**1/4*1/2 = 1/16

Q: In

A: Monohybrid cross:- Is a genetic mix between two individuals who have homozygous genotypes or…

Q: List the possible genotypes of the parents if a cross resulted in a F1-generation consisting of 50%…

A: monohybrid cross involves just one trait I.e color. Here the two different versions of color is used…

Q: The following two genotypes are crossed: Aa Bb Cc dd Ee × Aa bb Cc Dd Ee. What will the proportion…

A: Mendelian genetics is also known as classical genetics that involves the study of the inheritance…

Q: When one crosses two corn plants with green seedlings, the following progeny is obtained: 358 green…

A: Phenotypic ratio for the given numbers is, = 358/32, 87/32, 32/32 = 11.1, 2.7, 1 = 12 : 3 : 1…

Q: A white-flowered plant is crossed with a plant that is heterozygous for the trait.    What…

A: White flower is homozygous recessive trait can be represented as = ww Purple flower with  homozygous…

Q: What are the expected progeny (genotypes and phenotypes) from a cross of an AA plant with an Aa…

A: A cross is made to predict the traits of the progeny related to the parents. In a monohybrid cross,…

Q: What would be the phenotypic ratio of this cross?

A: TT      ×        tt Tt   Tt       Tt  Tt

Q: If a pure-breeding purple-flowered pea plant is crossed with a pure-breeding white-flowered pea…

A: He discovered that traits/ characters are inherited as discrete factors which were later known as…

Q: Can a monohybrid cross be used to illustrate Mendel’s principle of independent assortment?

A: A gene is the essential physical and functional unit of heredity. They are comprised of DNA…

Q: A TT (tall) plant is crossed with a tt (short plant). Create the cross and answer the following…

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

Q: In a cross between two, dihybrid, heterozygous individuals, what fraction of the offspring will be…

A: dihybrid organism is one that is heterozygous at two different genetic loci.

Q: a phenotype aB from an Aabb x aaBb cross? an ab gamete from an aaBB individual?

A: A trait is a characteristic feature that is unique to particular individual. In dihybrid cross , two…

Q: When a white guinea pig is crossed to a yellow guinea pig, all the progeny are cream colored. From a…

A: In genetics, any gene has two alleles pairs viz. Dominant or Recessive. The allele which gets…

Q: (A) You cross a true-breeding yellow-bodied, smooth-wing female with a true-breeding red-bodied,…

A: The genotype of the flies can be represented as: Yellow bodied and smooth wing = WWbb Red bodied and…

Q: You preform a monohybrid cross that yields an F2 phenotypic ratio of 2:1. What type of allele is…

A: A genetic trait is considered dominant if it is expressed in a person even in its single copy. While…

Q: f two of the purple flowered offspring from the previous cross were crossed, what is the expected…

A: Two purple-flowered offsprings have resulted in the F1 cross, this means F1 generation produced…

Q: In a type of bean plant, the trait for yellow pods (B) for yellow pods is crossed with a plant that…

A: given  dominant- trait for yellow pod (B) recessive- trait for green pod (b) heterozygous yellow pod…

Q: In a Monohybrid Cross using corn (or pea plants), the Parent generation consists of ONLY

A: In this question, we have to answer the type of parent generation taken.

Q: In a mendelian monohybrid cross, which generation is always completely heterozygous? A) F2…

A: Mendel contributed a lot to the field of genetics. He postulated various laws – Law of dominance,…

Q: In a mendelian monohbrid cross which generation is always completely heterozygous?

A: In Mendelian monohybrid cross, only one character or trait is considered for the study purpose.  The…

Q: In a trihybrid cross, we can tell which class is the double crossover class because: they will be…

A: A trihybrid cross includes parents that are heterozygous for three loci.

Q: A heterozygous tall pea plant is crossed with a short pea plant. What are the expected genotypic and…

A: Introduction  Monohybrid cross deals with one character controlled by one pair of alleles such as…

Q: Assuming a typical monohybrid cross in which one allele is completely dominant to the other, what…

A: Monohybrid cross is the cross between two true-breeding parents that differ by only one…

Q: .Round and blue-colored berries are dominant to wrinkled and purple ones. What is the expected…

A: Given  Round allele (R) is dominant over wrinkle allele (r).  Blue colour (B) is dominant over pink…

Q: In a cross involving polygenic inheritance, three (3) gene pairs control plant height. The shortest…

A: Introduction When the characteristics which are inherited to the offspring are controlled by two or…

Q: For the cross Aa X Aa, A is dominant and stands for tall plants and a is recessive and stands for…

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

Q: In a cross between a 29cm plant and a 20cm plant what would be the genotypes giving the smallest…

A: Height in plants is a polygenic trait, in which one phenotype is influenced by more than one gene.…

Q: In a three-point testcross, the nonrecombinant progeny are A+ B+ C+ and a b c. The double- crossover…

A: "Genes" are the fundamental unit of heredity. They store genetic information in the form of DNA,…

Q: Assume we have two plants of genotypes “AabbCcDdEe” and “AaBbCcddEe” and that from the cross, we…

A: Given  Genotype of plant 1 = AabbCcDdEe  Genotype of plant 2 = AaBbCcddEe  Genotype  It is the…

Q: If two walnut combed chickens are crossed, and a ratio of 3:1 walnut comb:rose comb offspring…

A: When a single phenotype is affected by two or more genes, it is known as gene interaction.Gene…

Q: In snapdragons, heterozygotes for one of the genes have pink flowers, whereas homozygotes have red…

A: Inheritance patterns are of different type’s   Mendelian inheritance, incomplete dominance,…

Q: A pink-flowered plant is crossed with a white-flowered plant. What is the probability of…

A: Father of genetics Gregor proposed patterns of inheritance:   Law of Independent AssortmentThe law…

Q: Dihybrid and trihybrid Cross Get the genotypic and phenotypic ratio of the following:

A: The true breeding species crossed would be AABBCC and aabbcc and the resulting F1 generation…

Q: In humans, having dimples is dominant over not having dimples. In the Punnett square below, show a…

A: There are three laws of inheritance given by Mendel that explains the process of inheritance.…

Q: A test was done to determine the biological father of a child. The child's blood type is A and the…

A: ABO blood grouping was given by Karl Landsteiner in the year 1901. It follows the principle of…

Q: If an individual thought to be of genotype Aa is crossed with its parent of genotype aa, the cross…

A: Backcrossing is a crossing of a hybrid with one of its parents or an individual genetically similar…

Q: A rabbit with black fur (B) is crossed with a rabbit with white fur (b). All of the offspring have…

A: LAW OF DOMINANCE It that when an organism is Heterozygous for a trait, only the dominant allele will…

Q: The following genotypes are crossed: AaBbccDdEE x AabbCcDDEe Given that genes A, B, C, D, and E are…

A: Introduction: The pentahybrid cross of AaBbCcDd can be easily calculated by assuming their…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.