Mendelian concepts

Question 1

phenotype

Answer 1

Expression of the trait

Question 2

genotype

Answer 2

genetic make up

Question 3

Homozygous

Answer 3

genotype of 2 dominant or 2 recessive alleles

Question 4

Heterozygous

Answer 4

one dominant and one recessive allele (hybrid)

Question 5

What is mendel’s first law of Heredity?

Answer 5

Law of segregation : states that alleles segregate independently of each other when form gametes

Question 6

What is mendels 2nd law of Heredity?

Answer 6

Law of independent assortment: states that genes located on different chromosomes assort independently of each other. In other words, genes that code for different traits ( pea shape, pea colour)when located on different chromosomes do not affect each other during gamete formation.

Question 7

what is the phenotypic ratio of a dihybrid cross?

Answer 7

9:3:3:1

Question 8

when a gene is found on the sex chromosome it is called what?

Answer 8

sex linked

ex) hemophilia is a sex linked gene