Sexual selection is a form of natural selection famously suggested by Charles Darwin to result in sexual dimorphism. Both sexual selection and sexual dimorphism are due to different sexes being influenced separately by different evolutionary factors....
A gene codes for a particular protein, and various alleles for that gene may code for different versions of the protein, or perhaps no protein at all.Answer and Explanation: Alleles that are dominant are expressed whether there are one or...
If N is the population size, l the number of loci at which at any time favourable mutations are possible but have not yet occurred, u the mutation rate per locus and s the selective advantage per locus, sexual reproduction will not accelerate evolution if 1 2 Nu ln 20Ns, or, very ...
Genotypes can be either homozygous or heterozygous. When the two inherited alleles for a given gene are identical, this specific gene is calledhomozygous. Alternatively, when the two genes are different, the gene is said to be heterozygous. Dominant traits require the presence of only one allele ...
The karyotype frequencies appear to be balanced by strong nega- tive assortative mating, in which almost all breeding pairs are between birds with different plumage colours (and their associated different chromosome complements) (Thomas et al., 2008). The chromosome dimorphism, nearly obli- gate ...
People can also be heterozygous, with two different alleles for a particular gene. When someone is homozygous for a trait, that trait will manifest whether it is dominant or recessive, because there is no other genetic material to compete with it. When someone is heterozygous for a trait, ...
What are fixed alleles, and how do they affect the population? Give an example. Give an example of genetic drift in the population of humans. Globally, the human population is increasing exponentially. What are some of the reasons for this population explosion? Is it something that should be...
How are the somatic nervous system and the autonomic nervous system different? What is the difference between an anticodon and a codon in the tRNA? What is hemochromatosis? How is it caused? What is the difference between concave and convex mirrors?
These homologues have the same genes in the same location, althoughgene alleleson the chromosomes differ slightly. Gene swapping occurs in meiosis, which is how siblings may have different eye and hair color. Understanding Chromosome Sets Learning word definitions in introductory cell biology provides ...
What are gametes formed by? Fertilisation: Fertilisation during sexual reproduction is the fusion of male and female gametes (haploid) to form a genetically different zygote (diploid) which constitutes a new life. Answer and Explanation: Learn more about this topic: ...