Hairlessness in dogs is inherited from a single dominant allele. Inheriting two dominant alleles is lethal for the embryo. Penelope, a hairless dog, is wildly attracted to a hairy dog, Arnold. They mate. The probability that Arnold's sperm fertilizing Penelope's oocyte results in a happy, hairless puppy is: О 1/2 О 3/4 O 1/3 О 1/4 O 2/3

Q: A heterozygous free-lobed man is mated to a heterozygous free-lobed woman. What are the genotypes…

A: Genotype is the genetic makeup of an organism.  It consists of 2 alleles in an individual.

Q: In mice long hair is dominant over short hair. If two heterozygous mice were mated what would the…

A: It is given that king hair is dominant over short hair. Let L encodes long hair and it is dominant…

Q: In humans, brown eyes (B) are dominant over blue. A brown eyed man marries a blue-eyed (b) woman and…

A: Genes are the functional unit of heredity. It carries information that is transferred from one…

Q: In human oogenesis how many chromatids does a primary oocyte carry?  22/23/44/46 or 92

A: Gametogenesis is the process of synthesis of gametes .  It is divided into :- A ) Female…

Q: Suppose a woman has four sons, and two are colorblind and have hemohilia and two that are noral for…

A: A genotype is the total number of genes passed down from one generation to the next. A genotype may…

Q: For a male with a genotype of AaBb Draw a primary spermatocyte which has just entered diakinesis be…

A: Primary spermatocyte : During spermatogenesis the male germ cells called spermatogonial cells divide…

Q: Will any of the XY offspring be heterozygous (carriers) for that trait? Will any express it?

A: Be fore getting into result we need to know what Is A Carrier? A carrier is a person who has a…

Q: What is the relationship between non-disjunction, changes in chromosome number and miscarriage?  Why…

A: Chromosome abnormalities are of 2 types viz. numerical, where an individual has abnormal number of…

Q: Does this diagram represent normal Meiosis? Why or why not? XX X) X 0000

A: Cell division happens when a parent cell divides into two or more cells called daughter cells. Cell…

Q: A mouse sperm cells has the genotype a b c d e it fertilizes an egg with the genotype a b c d e a.…

A: The combination of genetic material from a sperm and an egg during fertilization is an important…

Q: If a pure breeding(homozygous) black(dominant), longhaired (recessive) cat is made of pure breeding…

A:

Q: Widow’s Peak is dominant over straight hairline. Free earlobes are dominant over-attached.  A…

A: Given  Widow’s Peak = dominant  Straight hair = recessive  Free earlobe = dominant  Attached earlobe…

Q: Which of the following can arise from a zygotic mitotic problem in an individual with a normal XY…

A: Following condition arised due to Error in zygote mitosis in an individual with XY genotype.

Q: If a father is affected by an X-linked dominant condition and the mother is normal, what is the…

A: When the gene responsible for the occurrence of a trait or disorder is present on one of the sex…

Q: A human female heterozygous for X-linked trait causing red-green color blindness marries a red-green…

A: Red Green Colour Blindness:  Red-green color blindness is a type of color vision deficiency where…

Q: A child has a genotype AA, what possible combination of parental genotypes could have produced this…

A: Genotype is the appearance of genes of an individual. Each character in the gene is referred as…

Q: In human oogenesis how many chromosomes does a primary oocyte carry  22/23/44/46 or 92

A: Oogenesis: Oogenesis is the type of gametogenesis by which ova or female gametes are produced.  The…

Q: Q1: What are the odds that a given egg cell will contain an X chromosome? A Y chromosome? What are…

A: Note: We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

Q: wo heterozygous black pigs are mated. show the genotypes, phenotypes, and probabilities of the…

A: Answer. Homozygous dominant alleles: An organism that inherits two identical (same) dominant alleles…

Q: A woman heterzygous for color blindness (an X-linked recessive allele) marries a man with normal…

A: Color blindness is inherited as a recessive trait on the X chromosome. This is known as X-linked…

Q: how is it possible for a person who inherited XY gene to have female phenotype?

A: There are 46 chromosomes in each cell of the human body. The sex chromosomes, X and Y, are two of…

Q: A man with AB blood type marries a woman with O blood type. What is the expected phenotypes (use…

A: Allele for blood group AB are IAIB  And allele for blood group O are ii When we cross man with AB…

Q: Can a woman who is type AB and a man who is type AB have a child who is type O? use punnett…

A: Punnett square a. A Punnett square is a diagram that can calculate the percentage of genotypes for…

Q: In fruit flies, red eye color (R) is dominant over brown eye color (r). Two red-eyed fruit flies…

A: The offspring of two parents can be different from both parents as new allelic combinations can be…

Q: An X-linked dominant allele causes hypophosphatemia in humans. A man with hypophosphatemia marries a…

A: Hypophosphatemia is an X linked dominant trait. Normal = XdXd, XdY Affected = XDXD, XDXd, XDY

Q: Can a son be a carrier for an X-linked trait? Explain.

A: The genetic makeup of an offspring is determined by the genetic makeup of both parents; that is, the…

Q: Define cross-fertilization

A: Fertilization is the fusion of gametes to give rise to a new individual organism or offspring and…

Q: Fetus A and Fetus B are developing within their own biological mothers who are unrelated.  Fetus A…

A: Teratogens are substances/ agents which when introduced into the body can hinder the normal growth…

Q: If the man, from the previous question, is heterozygous for type A blood and the woman, from the…

A: The blood group is determined by gene I. Gene I have different alleles, these are: IA = It…

Q: Draw a Punnett square for a female who is a heterozygote and a male who is a dominant homozygotes.…

A: Genes are hereditary units in the DNA. These genes can be present in two versions called "dominant"…

Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.