Below is a pedigree of a family in which all the people in generation II are dead (indicated with a slash) because of political unrest in their country.  Which children in generation III could be traced to the grandmother in this pedigree by using only mitochondrial DNA sequences?      a. A and D   b. A, B, and C   c. A, B, C, D, and E   d. B, C, and E

Q: after crossing two tall pea plants, a scientist notes that approximately3/4 are tall, while…

A: The genotype is the genetic composition of an organism that governs its phenotype. The height of the…

Q: In fruit flies, long wings (L) are dominant over short wings (l). LL, Ll, and ll represent…

A: Phenotypic traits are observable traits that are expressed by an individual.

Q: When Homo sapiens migrated out of Africa they encountered a related species, Homo neanderthalensis,…

A: Understanding human evolution is crucial as it provides a genetic roadmap of our species’ history.…

Q: If a heterozygous black hen mated with a white rooster, what is the probability an offspring would…

A: Homozygous and heterozygous are words that are used to describe allele pairs. Individuals carrying…

Q: Level I represent the first generation, level Il represents the second generation. a. How many…

A: In pedigree, generations are represented as roman numbers (I, II, III and so on). The number of…

Q: Which leukocyte would likely be elevated in a patient who has a tapeworm? Explain your reasoning.

A: White blood cells, also termed as leukocytes, are the immune system cells that protect the body from…

Q: If an organism has two different alleles (call the alleles a andb) of a gene,a. its phenotype will…

A: Gene is the key to heredity that is transported from a parent to their offspring and is held to…

Q: In Labrador Retrievers, a single gene controls whether an individual dog will be black or brown.…

A: Introduction  In a testcross, the genotype of an organism that expresses the dominant phenotype for…

Q: Which of these genotypes is heterozygous?a. DD c. ddb. Dd d. Both a and c are correct

A: Both genotypes and phenotypes are the terms widely used in the field of genetics. However, there is…

Q: What is the reason for doing a test cross?a. to identify heterozygous individuals with the dominant…

A: Test cross is defined as the crossbetween unkown genotype, to a homozygous recessive organism…

Q: Medaka fish native to Japan have 24 pairs chromosomes, and medaka fish native to China have 23 pairs…

A: Genetic variations take place in a population due to several reasons. The reasons include random…

Q: Two individuals are heterozygous for a character. What is the probability of a zygote being…

A: A punnett square is used to determine the phenotype and genotype of progenies for a given couple.

Q: Fruit flies are very useful model organisms that have been used to study genetics. One mutant…

A: An eyeless fruit fly is represented by ey gene which is a recessive gene. Homozygous normal fly is…

Q: what types of alleles did the parents likely have, to produce the following offspring. The trait is…

A: Every character in an individual is decided by a pair of alleles.  At the time of gamete formation,…

Q: What is Sandra’s genotype for this trait?   A. She must be AA.   B. She must be Aa.   C. She can…

A: D. She can either be AA or Aa.  Sandra’s genotype for this trait is can be either AA or Aa.

Q: How does inbreeding increase the probabilities of recessive disorders? a. Carriers have an increased…

A: Inbreeding is the phenomenon of the creation of offspring from the breeding or mating of organisms…

Q: You come across a pea plant with yellow round peas but you aren't sure about it's genotype. 1. a.…

A: Genes control the genetic characteristics of an organism.  Genotype is the genetic characteristics…

Q: Which of the following states a valid conclusion based on the pedigree above?

A: Red green colour blindness is a X linked recessive disease. In this disease, due to deficiency of…

Q: A scientist takes a frog with green skin and mates it to a frog with brown skin.  All the frogs in…

A: F1 generation - It is the first generation produced on crossing the parental type. It is called…

Q: A long-haired cat is crossed to a short-haired cat, both from purebreeding lines.  All of the…

A: Given information: A long-haired cat is crossed to a short-haired cat, both from purebreeding lines.…

Q: Based on the haplotype network below, which statement is correct? a. None of the answers is correct…

A: A sort of genetic difference within humans can be called single nucleotide polymorphisms or SNPs.…

Q: Biology A cross to validate Mendels yellow green monohybrid cross experiment was performed with F1…

A: Mendel's monohybrid cross is the cross between two organisms of the same species with different…

Q: Recombination frequency shows? A. Shows the likelihood of gametes being carried over during…

A: Recombination is a process by which pieces of DNA are broken and recombined to produce new…

Q: How can the order of three linked genes (A, B, and C) on the same chromosome be determined?

A:

Q: If a Mendel's dihybrid cross between two double heterogotes (AaBb  x AaBb), assuming that the…

A: Dihybrid cross portrays a mating test between two life forms that are identically hybrid breed for…

Q: When Gregor Mendel first proposed his theories on genetics, they were not recognized. This was…

A: The question seeks to identify the primary reason why Gregor Mendel's pioneering genetic theories…

Q: biology (genetics) : Coat color in a given strain of dogs is determined by two independent genes. A…

A: To initiate our analysis, we must first ascertain the total population size and the frequencies of…

Q: How similar are the genes of different species? Does this reflect how different or similar the…

A: The relationship between the similarity of genes in different species and the similarity of their…

Q: Use the five step method to solve genetics problems involving one or two characters, using a Punnett…

A: Five steps to solve genetics problem: First we need to find out the characters that the individual…

Q: Choose one characteristic and make a pedigree for your family for that characteristic

A: A. Let us answer this question by taking the genetic disease Haemophilia. This is an X-linked…

Q: Organisms heterozygous for a recessive trait are often called carriers of that trait. What does that…

A: Carriers of a trait are always heterozygous, and the trait is always recessive.

Q: Suppose that extra fingers and toes are caused by a recessive trait but only appears in 25% of the…

A: Homozygous Recessive (bb): In this case, an individual carries two copies of the recessive allele…

Q: Under what situation would you expect haplotype frequencies to remain unchanged from one generation…

A: The physical characteristics or appearance of an organism is referred to as phenotype. The genetic…

Q: In chickens, black feathers (B) are dominant over white feathers (b). The sex ratio of chickens is…

A: Genetics is a branch of biology that is concerned with the study of Nucleic acids ( Ribonucleic…

Q: n plants known as “morning glory”, the allele for the dominant red-flower color is incompletely…

A: Given that, dominant red flower is incompletely dominant over recessive white colored flower. In…

Q: One breed of cattle can be red, white, or roan. A cross of two roans produces equal numbers of white…

A: To understand this question, let us try to understand the genotypes associated with the traits.…

Q: what is not true about hybrids between polar bears and grizzly bears in the wild (select all that…

A: Introduction :- Hybrids refer to offspring produced from mating between two different species or…

Q: Before we understood genetics, the process of passing traits from parents to children was known as……

A: Genetics was discovered by John Gregory mental and accordingly he is called as the father of…

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.