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What else can I help you with?
4. Inherited traits are passed down from our parents to us their offspring by the information that is coded in our parents?
genes.
What two discoveries post-date the work of Darwin and provided a mechanism for natural selection?
Darwin didn't know how traits were passed on to offspring, and how traits were coded (DNA's existence)
What must be true of traits that are passed down through generations?
Traits that are passed down through the generations must be either culturally or environmentally inculcated or genetically inherited (or some combination of these). Evolutionary biology concerns itself with genetically inherited traits. In the long term, for genetically inherited traits to continue to be passed down through the generations, they must be at least neutral with regard to reproductive fitness, or advantageous (i.e. they must not be subject to negative selection pressure)
Is a dominant trait seen in the first generation or the second generation?
Dominant traits tend to manifest whenever they are inherited. The real question is, "When do you see recessive traits?" Traits are coded in genes. We all inherit genes from both of our parents. If the dominant trait is capital Y and the recessive trait is lowercase y we can calculate the odds fairly easily. There are only four combinations that can be inherited from one pair of parents: YY, Yy, yY, and yy (this is usually visualized using a "punnet square"). Only in the case of both inherited traits being lowercase y will we see the recessive trait. Otherwise, we will usually see the dominant trait.
The set of instrustions for making proteins that are coded in DNA and passed from parent to offspring each generation are called?
The set of instructions for making proteins coded in DNA and passed from parent to offspring each generation are called genes. Genes are the basic units of heredity and determine the traits and characteristics of an organism.
What is a genetic characteristic of the individual?
The genetic traits, both physical and behavioral, that the individual possesses on his personal genome.
What are sex-linked traits?
Traits caused by proteins coded for on the sex (X and/or Y) chromosomes.
What traits are sex-linked?
Traits caused by proteins coded for on the sex (X and/or Y) chromosomes.
Are large feet inherited?
Sometimes they are, sometimes you just get them. You can never know because feet size aren't coded with one gene, they're coded by a ton of genes.
What is the genotype of the offspring that do not share the parents phenotype?
If both parents have the same phenotype, but the offspring did not share that phenotype, then it is likely that the parents have a dominant phenotype, but the offspring has a recessive phenotype, which means that the offpring's genotype would be homozygous recessive, and it's parents' genotypes would be heterozygous. For example, the parents may both have the genotype Bb, which gives them black fur. Approximately 25% of their offspring should have the genotype bb, which gives them the phenotype of white fur.
What are Phenotypic features that are coded for by several genes called?
Linked
The DNA sequences that make up the genetic code of an organism determine which traits the organism will exhibit?
Yes, DNA sequences encode the instructions for making proteins, which play a key role in determining an organism's traits. Variations in the DNA sequence can lead to differences in traits among individuals. The genetic code is responsible for passing down inherited traits from one generation to the next.
