TMS Mendelian Genetics

Front

What is an allele?

Back

An allele is one of the two or more forms of a gene that arise by mutation and are found at the same place on a chromosome.

Front

What is the percentage of homozygous recessive offspring in a typical Mendelian cross?

Back

50% of the offspring will be homozygous recessive.

Front

How is genetic engineering best described?

Back

Genetic engineering is the process of transferring genes from the genetic material of one organism into the genetic material of another organism.

Front

What is the genotype for a homozygous recessive offspring if D = dimples and d = no dimples?

Back

The genotype for a homozygous recessive offspring is dd.

Front

What percentage of the offspring will be purebred dominant in a typical Mendelian cross?

Back

25% of the offspring will be purebred dominant.

Front

Define genotype.

Back

Genotype is the genetic constitution of an individual, specifically the alleles present for a particular gene.

Front

Define phenotype.

Back

Phenotype is the observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

Front

What is a hybrid organism?

Back

A hybrid organism is the offspring resulting from the crossbreeding of two different species or varieties.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene.