geneticis

Question 1

• _______- heritable feature that varies among individuals
• ____- variant of a ____
• Gene- unit of _____ that determines ____
• Allele- _____ version of a gene

Answer 1

• Character- heritable feature that varies among individuals
• Trait- variant of a feature
• Gene- unit of heredity that determines characters •Allele- alternative version of a gene

Question 2

Mendel’s model:
Law of dominance
- Recessive alleles will be masked by ______ alleles
(If 2 alleles at locus differ then one (dominant allele) determines organism’s appearance and other (recessive allele) has no noticeable effect on appearance. )

Answer 2

Mendel’s model:
Law of dominance
- Recessive alleles will be masked by dominant alleles
(If 2 alleles at locus differ then one (dominant allele) determines organism’s appearance and other (recessive allele) has no noticeable effect on appearance. )

Question 3

Law of ______- 2 alleles for ______ character separate ______ during gamete formation and end up in different gametes, offspring inherit one copy from each parent

Answer 3

Law of Segregation- 2 alleles for heritable character separate randomly during gamete formation and end up in different gametes, offspring inherit one copy from each parent

Question 4

Law of Independent Assortment- genes for different _______ are sorted separately (depends on homologous chromosome pairing in meiosis)
Genes for different traits can segregate independently during the formation of gametes.

Answer 4

Law of Independent Assortment- genes for different traits are sorted separately (depends on homologous chromosome pairing in meiosis)

Question 5

Mendel demonstrated that parents pass on _____ heritable units (genes) to offspring by conducting experiments on garden peas.

Answer 5

Mendel demonstrated that parents pass on discrete heritable units (genes) to offspring by conducting experiments on garden peas.

Question 6

A _____ is a heritable feature that varies among individuals. A _____ is a variant of feature. A _____ is a unit of heredity that determines characters. An ______ is an alternative version of a gene.

Answer 6

A character is a heritable feature that varies among individuals. A trait is a variant of feature. A gene is a unit of heredity that determines characters. An allele is an alternative version of a gene.

Question 7

Mendel mated true-breeding pea varieties with 2 different traits for a given character. He then mated individuals from F1 generation and observed a 3:1 ratio of traits in the F2 offspring.

Answer 7

Mendel mated true-breeding pea varieties with 2 different traits for a given character. He then mated individuals from F1 generation and observed a 3:1 ratio of traits in the F2 offspring.

Question 8

Mendel’s model to explain the 3:1 ratio incorporated four concepts. Different alleles account for _____ in characters. For each character and organisms inherits 2 allele, one from each parent. If 2 alleles at a locus differ then one (dominant allele) determine the organism’s appearance and other (recessive allele) has no noticeable effect on its appearance. 2 alleles for a heritable character separate(segregate) during gamete formation and end up in different gametes(law of segregation)

Answer 8

Mendel’s model to explain the 3:1 ratio incorporated four concepts. Different alleles account for variation in characters. For each character an organisms inherits 2 allele, one from each parent. If 2 alleles at a locus differ then one (dominant allele) determine the organism’s appearance and other (recessive allele) has no noticeable effect on its appearance. 2 alleles for a heritable character separate(segregate) during gamete formation and end up in different gametes(law of segregation)

Question 9

Homozygous have two identical alleles for a gene (AA dominant or aa recessive) and heterozygous have two different alleles(Aa). A ______ is heterozygous for one character and a _____ is a heterozygous for two characters.

Answer 9

Homozygous have to identical alleles for a gene (AA dominant or aa recessive) and heterozygous have two different alleles(Aa). A monohybrid is heterozygous for one character and a dihybrid is a heterozygous for two characters.

Question 10

A ______ is an individuals genetic makeup, and phenotype is its physical appearance.

Answer 10

A genotype is an individuals genetic makeup, and phenotype is its physical appearance.