百度试题 结果1 题目 Is the following definition valid or invalid?Inherited trait is a characteristic that is passed from parents to offspring. A. 正确 B. 错误 相关知识点: 试题来源: 解析 B 反馈 收藏
Refers to a trait that is expressed only when genotype is homozygous; a trait that tends to be masked by other inherited traits, yet persists in a population among heterozygous genotypes.Scitable
Bird song is a highly labile trait, affected greatly by anatomy, the environment10, and in most species by cultural learning11,12. Indeed, most genetic studies on bird song have so far focused on the genes implicated in song learning13,14,15,16, thus leaving the molecular mechanisms underlyi...
We suggest that restoration of male fertility is probably best viewed as a quantitative trait controlled by many loci. We develop a threshold model that accommodates an underlying polygenic trait, which is resolved at the phenotypic level in discrete sexual morphs. We use this model to reanalyse...
How can a trait such as height be both highly heritable and still be influenced by the environment? 1. Why do genetic mutations happen? 2. What factors do they depend on? How are hereditary changes responsible for evolution? How are inherited characteristics passed on through generations?
to thousands of genes. Every normal human cell comprises 23 pairs of chromosomes that mean a total of 46 chromosomes. A trait is any gene-determined characteristic. It is often determined by more than one gene. Whereas, some traits are also caused by mutated genes that a...
Trait decay may occur when selective pressures shift, owing to changes in environment or life style, rendering formerly adaptive traits non-functional or even maladaptive. It remains largely unknown if such decay would stem from multiple mutations with small effects or rather involve few loci with ...
A gene is a sequence of DNA that can be transcribed into mRNA. This mRNA can then be used to make a protein. The mRNA is a copy of the gene, and the gene is essentially a set of instructions that tells the cellular machinery how to...
Evolutionary mismatch can be defined as “a negative consequence that results from a trait that evolved in one environment being placed in another environment” [78]. However, this concept itself is not made explicit (to teachers or students) in the material. Teachers and students are thus not...
When both alleles for a trait are the same, the alleles are said to be: a. Recessive b. Dominant c. Homozygous d. Heterozygous If a person has blood type A, the possible genotypes that the person may have are ___ and ___. Cons...