Define 1 Reciprocal cross 2 True or purebreeding Fill in t

Define

1. Reciprocal cross –

2. True or pure-breeding –

Fill in the Blank

3. When trying to calculate the probability that two independent events will occur together you should _____________________ the individual probability of each event.

4. When crossing dihybrid peas, Mendel noticed that there were four phenotypic types amongst the resulting F2 progeny; two had the phenotype of the parental generation and the other two were ___________________.

True or False

5. The dominant trait is that which is masked in the F1 generation resulting from a cross between true breeding parents.

6. Mendel’s law of segregation says that during gamete formation different pairs of alleles segregate independently of each other.

Short Answer

7. Calculate the probability of A.) drawing a 4 from a deck of playing cards, B.) Drawing a black 4 and a red 8 from a deck of playing cards, C.) drawing a king, queen, or jack and the ace of spades from a deck of playing cards. (Show your work.)

8.

A. is this an autosomal, X linked or Y linked trait?
B. Is the transmission of this trait dominant or recessive?
C. what is the genotype of individual II-2?

Solution

1. Reciprocal cross: a pair of crosses between a male of one strain and a female of another, and vice versa.

2. True or pure-breeding: True breeding means that the parents will also pass down a specific phenotypic trait to their offspring. Remember that a phenotype is the outward appearance of something. True bred organisms will have a pure genotype (genetic expression of a trait) and will only produce a certain phenotype.

3. When trying to calculate the probability that two independent events will occur together you should specify size of the individual probability of each event.

4. When crossing dihybrid peas, Mendel noticed that there were four phenotypic types amongst the resulting F2 progeny; two had the phenotype of the parental generation and the other two were genotype.

5. The dominant trait is that which is masked in the F1 generation resulting from a cross between true breeding parents is True.

6. Mendel’s law of segregation says that during gamete formation different pairs of alleles segregate independently of each other is True.