Q: explain why identical twins may have fewer genetic differences than fraternal twins?
A: Identical twins results from the fertilization (fusion of male and female gametes i.e., sperm and…
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A: A large proportion of genes in an individual's genome are very important for survival for life.
Q: explain heterozygous trait.
A: the trait which is expressed is always dominant and the trait which is not expressed is recessive.
Q: What is Down syndrome ? When does Down syndrome occur ?
A: Human genetic disorders are caused due to the absence or excess or abnormal arrangement of one or…
Q: What is required in the genotype of an individual to show a recessive trait?
A: Genotype It is defined as the reference to the alleles (variants of the gene) an individual carries…
Q: Define partial dominance?
A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…
Q: If two parents have a dominate trait, can they have a child that has a recessive trait?
A: If two parents have a dominate trait, can they have a child that has a recessive trait? Ans ) Yes…
Q: Aren’t traits such as earlobe shape and dimples due to dominant and recessive alleles?
A: The DNA is the hereditary unit of an organism. The genes are composed of DNA which is passed on…
Q: If a mutation in a dominant gene occurred during gamete formation which resulted in a new recessive…
A: Alleles are generally defined as the variants of a gene. Based on the alleles present in the genome,…
Q: Explain why Down syndrome is more common in infants born to women older than 35 years of age?
A: A genetic disorder characterized by abnormal cell division in child resulting in extra (whole or…
Q: Define recessive
A: A recessive trait can express itself only in the absence of a dominant trait. When present with its…
Q: If someone has a dominant trait such as Widow's Peak, how might you determine whether he/she was…
A: * widow's peak inheritance means individuals having V shaped hairline that runs in families. *To…
Q: Does first born daughter look like father?
A: Genetics is the branch of Biology dealing with the study of genes including their structure,…
Q: If a male is homozygous dominant and the female is homozygous recessive, what is the probability…
A: Genotype can be homozygous dominant (AA) or homozygous recessive (aa) or heterozygous (Aa).
Q: explain homozygous recessive trait and homozygous dominant.
A: A gene is a unit of hereditary that is encoded in thousands of number on the helical strands of…
Q: Are all froms of Down Syndrome due to non-disjunction? Explain
A: There are three forms of Down's Syndrome- 1. Trisomy 21 2. Non-disjunction 3. Mosaicism
Q: What is polygenic inheritance, and how is it different fromcodominance?
A: The law of dominance does not occur universally. After mendel several cases were recorded by…
Q: What is an individual that bears a dominant normal allele that masks the effects of the recessive…
A: The gene is the basic physical and functional unit of heredity. It consists of a specific sequence…
Q: Identify disorders that are associated with sex-linked inheritance.
A: In human beings, sex is determined by a pair of sex chromosomes. In males XY and in females XX is…
Q: If both parents have an autosomal dominant trait, what can you say about their children? Explain
A: Autosomal dominance is a pattern of inheritance character of some genetic dis order. Autosomal…
Q: Explain how polygenic inheritance differs from inheritance that is controlled by only one gene?
A: Genetics is a part of science worried about the investigation of genes, genetic variation, and…
Q: Do males and females show equal chances of inheriting the trait? Why or why not
A: There are two facets to this question which make out two completely different answers. Both the…
Q: What is the difference between dominant and recessive trait?
A: A gene is the basic physical and functional unit of heredity and is composed of DNA(deoxyribonucleic…
Q: What is a down syndrome?
A: Humans are diploid organisms,i.e., humans will have two copies for each chromosome in the cells. One…
Q: Is the sickle cell allele dominant or recessive? Explain. What is sickle cell trait?
A: Sickle cell is a red blood cell trait. The red blood cells become sickle cell in shape.
Q: Is TT heterozygous dominant or recessive?
A: A diploid organisms contains two copies of a gene in two homologous chromosomes which are known as…
Q: What are Autosomal Dominant and Autosomal Recessive?
A: Genes are made of nucleic acids called DNA. The variant forms of genes are called alleles. The…
Q: What are polygenic inheritence?
A: Gene is a particular nucleotide sequences in RNA or DNA. It is generally located on a chromosome.…
Q: What is the gene that goes with a trait called
A: A gene is the basic physical and functional unit of heredity. Genes are made up of DNA.
Q: What is the law of dominance?
A: Law of dominance is one of three laws given by mendel to comprehend the exchange of qualities from…
Q: Is blood type an example of pleiotropy?
A: Pleiotropy is a condition in which a single gene controls multiple phenotype characteristics or…
Q: What are affects when Nondisjunction occurs?
A: The separation of the sister chromatids or homologous chromosomes is one of the defined steps of…
Q: What is the probability that the child indicated by the question mark will have both disorders?
A: Answer : Let us assume Gg representing allele for Grey's disorder and Oo being the allele for Orange…
Q: What is a trait for which symptoms are not present at birth and manifests themselves later in life?
A: Genetics is the study of inheritance of genes among the generations that deals with heredity and…
Q: How many copies of each gene for the trait does each offspring receive?
A: At the time of gamete formation by the proce4ss of meiosis, the number of chromosomes reduced by…
Q: Is the inheritance autosomal or sex-linked?
A: The genes are located on the specific region of the DNA. Genes determine the phenotypic…
Q: State the probability of a male child being affected and ofa female child being affected if the…
A: Sex-linked recessive disorder is often refers to as "X-linked recessive" disorders is a diseases…
Q: What does A Vertical Pattern of Inheritance Indicates?
A: The study of genetic variations, heredity, and genes is called genetics.
Q: What is the most common autosomal recessive disease?
A: Autosomal recessive disease refers to the type of disease that can be passed down through families.…
Q: In Sex-Limited and Sex-Influenced Inheritance, an Individual’s Gender Influences the Phenotype. How…
A: Genetic is the branch of science that deals with genetic material like genome, genes, DNA, and…
Q: If a woman is heterozygous for neurofibromatosis (a dominant disorder) and produces with a…
A: Neurofibromatosis (NF1) is hereditary disease (which can be passed on from one generation to…
Q: Does a trait always go together with another trait in one individual even if the autosomal traits…
A: The segment of DNA that can produce a polypeptide is called gene. it is an inherited factor that…
Q: Is it possible for a recessive trait to skip a generation meaning the parents do not display the…
A: The alleles are generally of dominant and recessive type and some other forms like codominant and…
Q: What is the probability of obtaining a triply recessive individualfrom the parents ?
A: Introduction Sir Gregor Mendel is known as the Father of Genetics. He was the pioneer scientist who…
Q: Is a widow’s peak a dominant or recessive trait?
A: Dominant and recessive traits exist when a trait has two different forms at the gene level. The…
Q: What is recessive epistasis?
A: In epistasis, the collaboration between qualities is hostile, to such an extent that one quality…
Q: In dominant–recessive inheritance, the one allele that affects the child’s characteristics is called…
A: Alleles are variant forms of a gene, there are two alleles of a single gene but due to mutations,…
Q: What must be true about the genotypes of parents who have a child who has a recessive trait?
A: Given: the child has a recessive trait, so let the genotype of the child be - aa for dominant trait…
Q: Is the probability of having offsprings that are identical twins hereditary?
A: Identical twins are formed by random splitting of a fertilised egg. This leads to creation of two…
is an attached earlobe a dominant or recessive trait?
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- Is a widow’s peak a dominant or recessive trait?Johnny has unattached earlobes (a dominant trait) like his father, but his mother has attached earlobes. What is johnny’s genotype?Tongue rolling is an autosomal dominant trait. What would be the phenotype of a person who is heterozygous for this trait?
- Recessive or dominant ?What are the odds of the person with sickle cell anemia disorder passing it on to their children if the other person is homozygous dominant, heterozygous, or homozygous recessive for the trait?John has unattached earlobes (dominant) like his father, but his mother has attached earlobes (recessive). What is John’s genotype? Show punnet square
- Is the trait correct ?Indicate the nature of the trait and type of inheritance involved in each of the following situations. (a) Children who exhibit this trait have at least one parent who exhibits the same trait. (b) Children exhibit this trait even though neither parent does.If a male is homozygous dominant and a female is heterozygous, what is the probability that their child will be homozygous recessive?
- If two parents have a recessive trait, can they have a child that has a dominant trait?What must be true about the genotypes of parents who have a child who has a recessive trait?Unattached earlobes (E) are dominant over attached earlobes (e) [Figure (a) and (b)]. If a woman with unattached earlobes and a man with attached earlobes have children, what percentage of their children has the possibility of having unattached earlobes if the mother is homozygous for the trait?
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