Mendel and Inheritance Sapling Questions

Why are linked genes often inherited together?

Linked genes are close together on the same chromosome

Genotype (Definition)

The allele combinations an organism has, Rr

Chromosome

A DNA and protein structure that carries and transmits genetic information

Autosome

A chromosome that does not determine sex

Genome

A complete set of genetic information for an organism

Allele

A variation of a gene, B or b

What is an individual that is true-breeding for a particular trait?

An individual that is homozygous for the gene that encodes the trait

What describes an organism with a wild type phenotype?

An organism that has the phenotype that occurs most frequently in natural populations

Which statement describes dominant alleles? -two alleles that are expressed separately and equally -two alleles that blend to create an intermediate phenotype -any allele whose presence can be masked by another allele -any allele that can hide the presence of a different allele

Any allele that can hide the presence of a different allele

Which statement describes recessive alleles? -any allele that can hide the presence of a different allele -any allele whose presence can be masked by another allele -two alleles that are expressed separately and equally -two alleles that blend to create an intermediate phenotype

Any allele whose presence can be masked by another allele

Why does genetic variation not always determine the differences in a given trait between individuals?

Environmental influences can change gene expression

Genotype (example)

The genetic combinations in an organism, a pair of alleles, rr

Phenotype (Definiton)

The physical expression of a gene, Baldness

Which statement describes a phenotype? -the physical trait produced by an organism's genetic makeup -a section of DNA in which the code for a protein is located -the pair of DNA sequences an organism has for a trait -one variation of the code for a protein

The physical trait produced by an organism's genetic makeup

Phenotype (example)

The way an organism looks or functions as determined by its genes, red hair, sickle-cell anemia

What is the offspring of a genetic cross between two true-breeding organisms with different genotypes called?

Hybrid

What idea was developed to explain the physical basis of Mendel's finding that hereditary factors undergo segregation and independent assortment?

The chromosomal theory of inheritance

Which statement describes a genotype? -the physical trait produced by an organism's genetic makeup -the pair of DNA sequences an organism has for a trait -a section of DNA in which the code for a protein is located -one variation of the code for a protein

The pair of DNA sequences an organism has for a trait

How is a true breeding yellow-seeded pea plant different from a hybrid yellow-seeded pea plant?

They have the same phenotype but different genotypes