what is DNA?genotype and phenotype of possible offspring?

Answer 1

Regarding your 1st question, DNA is also known as Deoxyribonucleic acid. DNA is a nucleic acid, which is a specific type of organic molecule. From a biological perspective, DNA is considered to be the "blueprint of life". All cells contain DNA; some cells have their DNA contained in a nucleus. The DNA provides all essential information regarding the growth & development of the cell (and in turn the organism).

As far as genotype & phenotype, these two genetic terms are used to describe the specific genes & appearance of genes.

The genotype is often indicated as two letters (they are the same, but may be capitalized, lowercase, or a combination). Each "letter" of a genotype is known as an allele. For every gene, you receive one allele from your mother and one allele from your father. These two alleles pair up and code for a specific gene (such as eye color). A capital letter indicates a dominant (more common) trait, while a lowercase letter indicates a recessive (less common) trait.

The phenotype is an expression of the genotype. Generally, if there is one dominant allele within the gene, it will be displayed.

For example, let's say that you are studying the genotype of hair color. "B" represents brown hair (which is dominant/common) while "b" represents blond hair (which is recessive/less common).

An individual who has brown hair (phenotype) could have a genotype of BB or Bb. An individual who has blond hair (phenotype) has a gentoype of bb.

Answer 2

DNA stands for deoxyribonucleic acid. It is the genetic material of all organisms (a few viruses use RNA). If you just google DNA, you'll find images of its structure and information about how it's put together and how it carries genetic information.

Your other questions about genotype and phenotype of possible offspring don't make any sense. If this is part of a problem, you can use the genotype (what types of alleles for some particular gene) of the parents to predict the genotypes of the offspring. That's basically what Gregor Mendel figured out how to do in the 1860s. But without any information, you can't predict anything.

Answer 3

the other guy is right about the dna but genotype is like Dd or DD, dd or any other. n phenotype is physical appearance like tall or short or black or white n stuff.

Answer 4

easily, to the two questions. in case you bypass (IA i) with (IB i): -25% of the offspring would have variety O blood (ii) -25% of the offspring would have variety AB blood (IA IB) -25% of the offspring would have variety B blood (IB i) -25% of the offspring would have variety A blood (IA i) in case you bypass (IA IB) with (ii): -50% of the offspring would have variety B blood (IB i) -50% of the offspring would have variety A blood (IA i)