It is suggested that the most important advantage of sex arises when two genetically different populations migrate into a new environment, in which the best adapted genotype is a combination of genes from the two invading populations. 展开 关键词:...
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...
What are the general purposes of mitosis and meiosis? How are the cells produced different in terms of chromosome number and general function? Who determines the gender of an offspring: the mother or the father? What is the main reason?
In some cases, people inherit two copies of the same allele, making them homozygous for that particular trait. 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...
What are 3 examples of population evolution and microbial life? What are two factors that could limit the size of the human population? A population is solely comprised of 56 A2A2 individuals. 9 A1A1 individuals migrate in and contribute to the mating pool. What is the frequency of A1A2 in...
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 ...
they are homozygous for that gene. If they inherit two different alleles of the gene–one from their father and the other from their mother–they are heterozygous for that gene. If they inherit only one allele of a gene, by contrast, they are hemizygous. In males of many species, the ma...
namelymale parent and female parent. The copies, however, are not necessarily the same. When the copies of a gene differ from each other, they are known as alleles. A given gene may have multiple different alleles, though only two alleles are present at the gene’s locus in any individual...
Diploidcells, symbolized by 2n, possess two sets of chromosomes. Somatic (body) cells are diploid. Chromosomes contain two gene alleles (copies) for inheritable traits. Two haploid gametes result in a diploidzygote. You'll also read aboutpolyploidcells, which are other ploidys such as triploid ...
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. ...