About 40% of Solomon Islanders carry a gene for blond hair, and yet only 5%–10% of these people actually have blond hair. Why is the proportion of people with blond hair only 5%–10% when so many people carry genes for blond hair?

Q: What is the frequency of the heterozygous genotype if the homozygous genotype frequencies are 0.1385…

A: The frequency of the heterozygous genotype depends on factors like allele frequencies and mating…

Q: when bred together produced 12 hearting puppies and 4 deaf puppies. What are the genotypes of all…

A: Congenital deafness in dogs (or other animals) can be acquired [caused by intrauterine infections,…

Q: br br RASE BERr BR BbRr BR BbRr BURr How many F, Guinea pigs may have black eyes and rough fur? How…

A: When two or more than two characters are taken into a cross it is called as polyhybrid cross,…

Q: Freckles are a dominant trait in humans. Both of the girts have the genotype FF for freckles. If…

A: Genes are the stretch of the DNA that code for a polypeptide chain.

Q: Tristan da Cunha is a group of small islands in themiddle of the Atlantic Ocean. In 1814, a group of…

A: Tristan da Cunha is a remote island in the South Atlantic and was recently settled around 1817 by a…

Q: Skin colour in dolphins is determined by a single gene showing incomplete dominance giving rise to 3…

A: A cross between the two F1 hybrids shows the heterozygous for a single trait exhibiting incomplete…

Q: What is meant by the term genetic variation? Give two examplesof genetic variation . What…

A: Genetics is a study of genes, heredity, and genetic variation in an organism. Living organisms…

Q: Humans who are born homozygous for the recessive sickle cell allele die of sickle cell anemia, while…

A: Individuals heterozygous for sickle cell anemia are resistant to malaria. So, following genotypes…

Q: Consider the pedigree below for a recessive autosomal trait caused by allele t. The dominant…

A: A family tree which is made of symbols and lines which represents the genetic history of a person is…

Q: Suppose you are studying the incidence of low lipoprotein lipase activity among 100 pairs of first…

A: Introduction  Hereditary refers to the transmission of traits or characteristics from one generation…

Q: In the genetics unit you learned that sickle cell anemia is an autosomal recessive condition.  In…

A:

Q: Albinism is a recessive trait in humans.A geneticist studies a series of families in which both…

A: Exceptions to the Mendelian pattern of inheritance are many in number, which are important to study…

Q: What is the percentage of the total number of gene copies the allele accounts for?

A: Step 1 Allele frequency refers to how common an allele is in a population. Allele frequency can be…

Q: The cystic fibrosis allele is recessive. The frequency of cystic fibrosis is 0.000484, or about one…

A: The Hardy-Weinberg principle or equilibrium states that allele frequencies remain constant from…

Q: Comparisons of concordance rates in MZ and DZ twins allow the estimation of heritability, a measure…

A: Monozygotic twins are identical twins that have the same DNA. They are the products of the…

Q: A research team genotyped hundreds of families affected by haemophilia. Among those families, they…

A: RFLP is found on X chromosome and it is a sex-linked recessive disorder. The daughter who inherited…

Q: Looking to the future, what changes to the frequency of the sickle-cell allele do you envision as…

A: Introduction:- Sickle-cell disorder is an autosomal recessive disorder that's mean If both the…

Q: 7) In some populations of grasses, the ability to grow in soil sprayed with a certain herbicide is a…

A: Hardy Weinberg Principle states that the gene frequency in a population remains constant from…

Q: Labrador retrievers have 3 varieties of fur colour: yellow, chocolate or black. Two genes are…

A: A trait is a characteristic feature that is unique to specific individual. Each trait is represented…

Q: Northern European descent have a cystic fibrosis allele, but only about 1 in 2,500 of these people…

A: Cystic fibrosis: This is genetic disorder seen rarely in human population. It is caused by defect in…

Q: A Tibetan individual who is heterozygous for the DISCI and EPAS1 loci mates and produces offspring…

A: Heterozygous individuals are those who have two different versions (alleles) of a particular gene.…

Q: Since we are all so closely related, it is amazing that we see such tremendous diversity in the…

A: The skin, eye, and collagen show great diversity. The skin colors in different regions are different…

Q: A form of learning disabilities and speech impairment results from a recessive mutation in the HERC2…

A: Frequency of homozygous dominant genotype AA = p2  Frequency of homozygous recessive genotype aa =…

Q: I believe that the correct answer is: p^2+2pq+q^2=1 I just want to make sure that I am…

A: Introduction :- The hardy weinberg  principle states that in the absence of other evolutionary…

Q: Tay-Sachs disease is caused by loss of function mutation in a gene on chromosome 15 that codes for…

A: Tay-Sachs disease is a rare inherited disorder and this is due to mutation occurring in HEX A gene…

Q: A rare recessive mutation causes rabbits that are normally white to be pink. If one in a hundred…

A: Given: A rare recessive mutation causes rabbits that are normally white to be pink .  White -…

Q: What is the frequncy of the recessive allele and what is the probability a couple are both carriers…

A: Tay−−Sachs disease is an autosomal recessive neurological disorder that is fatal in infancy. Despite…

Q: Which of these definitions of heritability is most correct? a)The total amount of phenotypic…

A: Which of these definitions of heritability is most correct? Ans : d) The proportion of phenotypic…

Q: brown hair, a widow’s peak, and freckles

A: Answer:Assume that hair color, hair line, and skin tone in humans are different traits that are…

Q: Heterozygote advantage is an interesting condition in those individuals who have one of each allele…

A: Heterozygous advantage represents the better survival rate of the heterozygous genotype than the…

Q: OHO does phenylketonuria affect brain developm How does cancer spread from one tissue to anoi How…

A: Population genetic science is that the study of genetic variation among populations, and involves…

Q: We have learned that the response to selection is equal to the selection differential times the…

A: Response to selection is denoted by the “R”. It is calculated as the product of narrow-sense…

Tissue renewal

In multicellular organisms, tissue is a level of structure that consists of a group of physically and functionally identical cells and their intercellular substances. Unicellular organisms do not have tissues. Tissues are absent or poorly differentiated even in the simplest multicellular animals, such as sponges. However, more evolved multicellular animals and plants have specialized tissues that may organize and govern an organism's reaction to its surroundings. The word tissue is derived from the Latin word 'weave.' Plants and animals have various kinds of tissue systems that differ in their work and composition according to the different requirements.