Gregor Mendel started experiments on inheritance in the 19. century. The basis of inheritance patterns is the fact that diploid cells contain two copies of the genome and that a gene has different variants, called alleles.Alleles can be dominant (for example, marked A) and recessive (for example, marked a). In a gene locus (position of a gene) there are only two alleles, one from the mother and the other from the father.If individuals have two copies of the same allele they are homozygous (AA (dominant homozygous) or aa (recessive homozygous)). If individuals have two different alleles they are heterozygous (Aa).In autosomal dominant traits, the phenotype is present if both copies of the dominant allele (A) are present (homozygous individuals AA) or only one copy of the dominant allele is present (heterozygous individuals Aa).In autosomal recessive traits, the phenotype is present if both copies of the recessive allele (a) are present (homozygous individuals aa).This is complicated in sex-linked trait, because there are two X cromosomes in females and one X chromosome and one Y chromosomes in males, so terms dominant and recessive are not reliable.It should also be taken into consideration that many traits are complex and caused by many genes interaction and/or environment conditions.
Answer:
a) Met - Ser - Asp - Trp - Tyr
b) Met - Ser - Asp - Trp
Neutral mutation (which is caused by a type of single gene mutation called a substitution mutation)
Explanation:
After the substitution of A to C, the amino acid codded for stays the same so this is known as a neutral mutation.
Answer:
Creating a model provides a practical solution for some scientific research by showing systems that are very large,small,or complex.Models are simplified representations of real objects or systems.Models can make things easier to study by zooming in on a single piece of a large system or magnifying something that is too tiny to see with the naked eye.
Explanation:
Transpiration increases with an increase in temperature.
A blood group refers to the classification of blood based on the presence of the sugars or proteins on the membranes of red blood cells called the antigens and the proteins in the blood plasma called the antibodies. Karl Landsteiner in the year 1901, classified the blood groups into the four groups A, B, AB and O which is called the ABO system of blood grouping.
If a classmate tells that a person can have type AO blood, we cannot agree. There are only four blood groups A, B, AB and O and they can be either negative or positive based on the absence or presence of the Rhesus antigen. A person with blood group A can have the allele (alternative forms of genes) A with the genotype AA or AO. Hence AO is not a blood group and it can be one of the genotype of blood group A.