Consider the genetic cross for absent-mindedness, which is a dominant trait. All of the offspring from this cross will be absent-minded. If two parents that are absent-minded have offspring that are not, what MUST be the genotypes of the parents?

Q: Using Mendelian symbols, our cross is PpYyRr × Ppyyrr. What fraction of offspring from this cross…

A: Dominant will always mask the recessive genes and it will appear either in homozygous or…

Q: Gene A converts compound A (white) to compound B (blue). Gene B converts compound B to compound C…

A: Compound A→→→→→→→→ (white)                            Gene A Compound B→→→→→→→→ (Blue)…

Q: In peas, purple flowers are dominant to white. If a purple flowered, heterozygous plant were crossed…

A:

Q: Two sweat-pea plants, one with purple flowers and one with white flowers are crossed.  This results…

A: In complementary gene inheritance, the homozygosity of recessive alleles of any one gene results in…

Q: A heterozygous green eyed monster is crossed with a purple eyed monster. a)What proportion…

A: Organisms can be homozygous or heterozygous for a gene. An organism can be homozygous dominant if it…

Q: Since the white‑eye trait is X‑linked recessive, what result would you expect when crossing a…

A: A character which express by a recessive gene i .e. the gene is suppressed by dominant gene  is…

Q: Colorblindness is a sex-linked trait.  If a heterozygous female crosses with a colorblind male, what…

A: It is a sex-linked recessive disorder caused due to the defect in either red or green cone of eye…

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: 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: In pea plants, the color yellow is dominant over the color green. If a homozygous yellow plant is…

A: Gregor Johann Mendel was an Austrian Monk, who is known as the father of genetics published the…

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: 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: You are working for a parakeet breeder that has some green birds and some blue birds. You want to…

A: Green is the dominant phenotype.We can determine this because the blue male, who must be homozygous…

Q: Three different genes determine the coat colour of cats. One of the genes controls the black-based…

A: As mentioned, there are 3 different genes determining the coat color of cats. Black coat colored…

Q: In the pea plant, the green pod color allele is dominant to the yellow pod color allele. Set-up a…

A: The alleles are generally of dominant and recessive type and some other forms like codominant are…

Q: Over the years, Mendel experimented with more than 30,000 pea plants. Why did Mendel collect data on…

A: Mendel experimented with more than 30,000 pea plants and collected the data of many plants.

Q: You have a pea plant with a yellow pea phenotype but do not know if the genotype is homozygous (YY)…

A: The yellow and green alleles, respectively, are designated by the alleles ‘Y’ and ‘y’. ‘Y’ is…

Q: A different walnut rooster was crossed to a rose hen, and all the progeny were walnut. What are the…

A: The comb of a rooster or chicken is referred to as a fleshy structure that grows on top of the head.…

Q: an individual that is heterozygous for type A blood mates with an individual that has type o blood.…

A: The human body contains different types of antigens found on the surface of the red blood cells or…

Q: RR is homozygous red trait for flower color and rr is homozygous white trait for color. If one…

A: When two parents are homozygous, the resulting offspring would be heterozygous because the gametes…

Q: Dihybrid crosses which involve genes that are linked to each other usually give unexpected results…

A: Dihybrid cross gives rise to 9:3:3:1 phenotypic ratio which leads to Mendel's second law of…

Q: In a cross between fair skin, black hair (heterozygous for all these traits) with brown skin, red…

A: This cross involves two traits. The dominant may be homozygous or heterozygous whereas recessive…

Q: In pea plants, the color yellow is dominant over the color green. If a homozygous yellow plant is…

A: Dominant trait  Yellow color (Y) Recessive trait Green color(y) Cross is between homozygous…

Q: In a cross between fair skin, black hair (heterozygous for all these traits) with brown skin, red…

A: The genes are found on different chromosomes, occasionally far apart, but on the same chromosome,…

Q: IN SNAPDRAGONS, THERE ARE FLOWERS THAT PRODUCE RED PIGMENT AND FLOWERS THAT PRODUCE NO PIGMENT…

A: A well-liked flowering plant from the family Plantaginaceae is the Snapdragon flower, commonly…

Q: Ragweed hay fever (R) is dominant to the lack of allergy (r). A man who doesn’t suffer from ragweed…

A: Given: Ragweed hay fever (R) is dominant to the lack of allergy (r). Man - rr woman - Rr (Her mother…

Q: What is the phenotype and genotype of offspring in the following conditions? (use the Punnett…

A: ABO blood group system consists of four types of blood groups - AB, O, A and B. ABO blood group is…

Q: Polydactyly is an autosomal dominant condition in which an individual is born with more than five…

A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…

Q: In sasquatches, solid coat color (D) is dominant over spotted coats (d) and straight fur (R) is…

A: A test cross involves the mating of an individual with recessive traits. A recessive trait can only…

Q: e, since albino mice are neither yellow nor agouti colored. oss is AaCc to Aacc. What fractions of…

A: A gene usually in  homozygous condition may prevent development or cause the death of an organism or…

Q: In guinea pigs, the gene for black coat color is dominant to the gene for white coat color. What…

A: The transfer of character from parents to offspring is known as inheritance. The genes for coat…

Q: Consider the following cross: AaBBecDD X AabbCcDd assuming independent assortment of genes. What…

A: Dominant gene  The gene that mask the expression of other allele of same gene is known as dominant…

Q: "a" is a recessive allele of gene "A". Individuals with "aa" genotype suffer from a disease "D". If…

A: A disease is an abnormal condition that affects the structure or function of an organism and is…

Q: Imagine a test cross of an unknown individual that results in all 1000 offspring being homozygous…

A: The test cross involves crossing an individual with an unknown genotype (but expressing the dominant…

Q: terms of a chi-square analysis, what ratio would be tested for the offspring of a monohybrid cross…

A: The Chi-Square test is a statistical test used to infer how closely the observed data suits the…

Q: In a particular plant, green seed color is dominant to yellow seed color. If all of the offspring of…

A: Since the green seeds are dominant to yellow, the allele for green seeds can be represented with…

Q: Three different genes determine the coat colour of cats. One of the genes controls the black-based…

A: A phenotype is a measurable or observable characteristic of an organism. The phenotype is the…

Q: The cross between a female white giraffe and a pigmented male resulted in white offspring.  What is…

A: The alleles are generally of dominant and recessive type and some other forms like codominant are…

Q: offspring with Given the cross AaBbCc x Aabbcc, what is the probability of obtaining the genotype…

A: Trihybrid cross follows all laws postulated by Mendel a, law of segregation, law of dominance and…

Q: Purple (P) flower color is dominant to white (p) flower color. Cross two heterozygous parents using…

A: P allele encodes purple flower. It is dominant over p allele. The p allele encodes white flower.

Q: Consider the following cross: AaBbCcDdEe X AaBbCcDdEe. How many different phenotypes would you…

A: Introduction  A gene is consisting of a pair alleles/ factors and these alleles can be dominant or…

Q: As a hypothetical example, a trait in mice results in abnormallylong tails. You initially have a…

A: True breeding is  a type of breeding where the parents produce an offspring that carries the same…

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.