Mendelian Genetics

Question 2

What is a gene pair

Answer 2

Two copies of the same gene on homologous chromosomes

Question 3

Locus

Answer 3

Physical location of a gene on a chromosome

Question 4

Allele

Answer 4

Different versions of the same gene, some are dominant

Question 5

Dominant allele

Answer 5

Always fully expressed when present

Question 6

Recessive allele

Answer 6

Only expressed if gene pair consists of versions of that allele

Question 7

Homozygous

Answer 7

Gene pair consists of two of the same allele

Question 8

Heterozygous

Answer 8

Different alleles in gene pair

Question 9

Genotype

Answer 9

Allelic makeup of the genepair

Question 10

Two copies of the same gene on homologous chromosomes

Answer 10

Gene pair

Question 11

Physical location of a gene on a chromosome

Answer 11

Locus

Question 12

Different version of the same gene and some dominant

Answer 12

Allele

Question 13

Always fully expressed when present

Answer 13

Dominant allele

Question 14

Only express if Gene pair consists of versions of that allele

Answer 14

Recessive allele

Question 15

Allelic makeup of the genepair

Answer 15

Genotype

Question 16

Phenotype

Answer 16

Physical expression of genotype

Question 17

What is mendelian genetics

Answer 17

The study of inheritance from generation to generation

Question 18

What is molecular genetics

Answer 18

The study of structure and function of DNA and RNA

Question 19

Why can pea plants self fertilize?

Answer 19

They are monecious

Question 20

What did Mendel deduce

Answer 20

Mendel deduced meiosis and the diploid nature of eukaryotic cells

Question 21

What is Mendels first law?

Answer 21

The principal of segregation; individuals have two factors for each trait that separate during gamete formation or meiosis so that each gamete only gets one

Question 22

What assumption is needed to make punnet squares work?

Answer 22

Any sperm can fertilize any egg, this is not always true

Question 23

What assumption is needed to make punnet squares work?

Answer 23

Any sperm can fertilize any egg, this is not always true

Question 24

What is Mendels second law?

Answer 24

The law of independent assortment; this says traits are inherited independently of each other

Question 25

What circumstances did mendel get lucky with?

Answer 25

All the traits he looked at where on separate chromosomes, they all only had 2 alleles, where one was clearly dominant and one clearly recessive, and that all traits where controlled by one gene

Question 26

What could have messed with Mendels results?

Answer 26

Linkage: genes for two traits are on the same chromosome , Incomplete dominance: where the dominant allele does not fully suppress the expression of the recessive allele in a heterozygote, Codominate alleles: Where both alleles are fully expressed in the heterozygote