there are likely 10000 genes in the human genome how many possible genotypes are there course hero

by Kirsten Parker Published 2 years ago Updated 1 year ago 6 min read

How many unique human genotypes are possible?

This and this Quora question ask how many unique human genotypes are possible. The answers take the combinatorial approach of raising the 4 possible base pairs to a power which is some appreciable fraction of the 3 billion base pairs in the human genome, to get absurdly large numbers like 10 many millions.

How many genes are in a human genome?

The haploid human genome (23 chromosomes) is about 3 billion base pairs long and contains around 30,000 genes. Since every base pair can be coded by 2 bits, this is about 750 megabytes of data. An individual somatic ( diploid) cell contains twice this amount, that is, about 6 billion base pairs.

How many phenotypically distinguishable genomes exist?

This would produce a maximum of 2 20000 ≈ 10 6020 possible phenotypically distinguishable genomes. While this is obviously still an astronomically high number, it's an infinitesimally tiny fraction of the estimates produced in the Quora answers.

How many genes do humans and chimpanzees have in common?

PMID 17183716. Our results imply that humans and chimpanzees differ by at least 6% (1,418 of 22,000 genes) in their complement of genes, which stands in stark contrast to the oft-cited 1.5% difference between orthologous nucleotide sequences ^ The Chimpanzee Sequencing Analysis Consortium (September 2005).

How many possible genotypes are there in humans?

six different genotypesA description of the pair of alleles in our DNA is called the genotype. Since there are three different alleles, there are a total of six different genotypes at the human ABO genetic locus. The different possible genotypes are AA, AO, BB, BO, AB, and OO. How are blood types related to the six genotypes?

How many genotypes are possible with 3 genes?

6 genotypes3 alleles there are 1 + 2 + 3 = 6 genotypes.

What are the possible genotypes and phenotypes of the offspring in the F1 generation?

So, the F1 generation all have identical genotypes, heterozygous at the seed color gene, and their phenotypes are yellow seeds.

How many genotypes are there for 10 genes?

And one of the goals of quantitative genetics is to measure the contribution of genetic and environmental factors on a specific phenotype....The formula that predicts the number of genotypes from the number of genes is 3 to the power n.# of Genes# of Genotypes2952431059,0491 more row

How many genotypes are possible with 6 genes?

So, the correct option is '21'.

What are the possible genotypes in the F1 generation?

F1 Genotype All offspring in the initial F1 generation will have the same genotype, Gg, and the same phenotype with the dominant trait. This occurs because the offspring receive one allele from each parent, a G from one parent and a g from the other parent.

What is the possible phenotypes of the F1 generation?

No recessive phenotype appears in the F1 generation. This means that both parents cannot have the recessive allele for each trait. Therefore the parental genotypes must be WWdd x wwDD. As a check, this cross produces all individuals with a genotype of WwDd.

What is the genotype in F1 generation?

The genotype of the F1 generation plants is AABbCC. The number of gametes involved in the given cross can be calculated by 2n where n= 1 ( n is the number of heterozygotes). Hence there will two gametes ABC and AbC. On selfing these plants the phenotype of the F2 generation will be 3:1 as shown in the Punnett square.

Overview

Achieving completeness

Although the 'completion' of the human genome project was announced in 2001, there remained hundreds of gaps, with about 5–10% of the total sequence remaining undetermined. The missing genetic information was mostly in repetitive heterochromatic regions and near the centromeres and telomeres, but also some gene-encoding euchromatic regions. There remained 160 euchromatic gaps in 2015 when the sequences spanning another 50 formerly-unsequenced regions were det…

Sequencing

The first human genome sequences were published in nearly complete draft form in February 2001 by the Human Genome Project and Celera Corporation. Completion of the Human Genome Project's sequencing effort was announced in 2004 with the publication of a draft genome sequence, leaving just 341 gaps in the sequence, representing highly-repetitive and other DNA that could not be sequenced with the technology available at the time. The human genome was the first of all v…

Molecular organization and gene content

The total length of the human reference genome, that does not represent the sequence of any specific individual. The genome is organized into 22 paired chromosomes, termed autosomes, plus the 23rd pair of sex chromosomes (XX) in the female and (XY) in the male. The haploid genome is 3 054 815 472 base pairs, when the X chromosome is included, and 2 963 015 935 base pairs when …

Coding vs. noncoding DNA

The content of the human genome is commonly divided into coding and noncoding DNA sequences. Coding DNA is defined as those sequences that can be transcribed into mRNA and translated into proteins during the human life cycle; these sequences occupy only a small fraction of the genome (<2%). Noncoding DNA is made up of all of those sequences (ca. 98% of the genome) that are not used to encode proteins.

Coding sequences (protein-coding genes)

Protein-coding sequences represent the most widely studied and best understood component of the human genome. These sequences ultimately lead to the production of all human proteins, although several biological processes (e.g. DNA rearrangements and alternative pre-mRNA splicing) can lead to the production of many more unique proteins than the number of protein-coding g…

Noncoding DNA (ncDNA)

Noncoding DNA is defined as all of the DNA sequences within a genome that are not found within protein-coding exons, and so are never represented within the amino acid sequence of expressed proteins. By this definition, more than 98% of the human genomes is composed of ncDNA.
Numerous classes of noncoding DNA have been identified, including genes for noncoding RNA (e.g. tRNA and rRNA), pseudogenes, introns, untranslated regions of mRNA, regulatory DNA seq…

Genomic variation in humans

With the exception of identical twins, all humans show significant variation in genomic DNA sequences. The human reference genome (HRG) is used as a standard sequence reference.
There are several important points concerning the human reference genome:
• The HRG is a haploid sequence. Each chromosome is represented once.