Lab 5

Question 1

What are the offspring of P1 and P2 represented as

Answer 1

F1 (first filial generation)

Question 2

What is a gene

Answer 2

a factor of inheritance for a particular trait or characteristics of an organism

Question 3

genotype

Answer 3

genetic makeup of an organism all of the alleles of the genes in question

Question 4

phenotype

Answer 4

physical appearance of an organism for a particular trait. Phenotypes are indicated by words such as purple flowers

Question 5

Punnett square

Answer 5

used to simulate all possible combinations of male and female gametes to form offspring

Question 6

monohybrid cross

Answer 6

between two organisms that differ with respect to one characteristic

Question 7

How do you write a frequency for a monohybrid and dihybrid

Answer 7

di:
0.25; red, long

mono:
0.25, red

Question 8

Principal of dominance

Answer 8

when parents differ in one characteristic, their hybrid offspring resemble only one of the parents and are not a blend

Question 9

What did Mendel say about heterozygous plants reproducing and what is it known as

Answer 9

it produces two kinds of reproductive cells, half passing on the dominant character of one parent, and the other passing on the recessive character of the other parent

principle of segregation

Question 10

Mendel’s first law

Answer 10

alleles of one gene segregate one another during the formation of gametes

Question 11

Mendel’s second law

Answer 11

alleles of different genes assort independently of one another during gamete formation

Question 12

test cross

Answer 12

crossing an unknown individual with a homozygous recessive individual

Question 13

genes on different chromosomes

Answer 13

independent assortment

Question 14

genes on the same chromosome

Answer 14

gene linkage

Question 15

recombinant gametes

Answer 15

the combination of alleles that aren’t present in the parents of the F1 generation

Question 16

What does the chance of breakage or recombination depend on

Answer 16

how far apart the genes are on the chromosome

Question 17

a _____ cross is between two organisms that differ with respect to one characteristic

Answer 17

monohybrid

Question 18

a ____ cross can be an individual of ____ genotype with a homozygous recessive individual. If these organisms differ with respect to two characteristics this would also be a _____ cross

Answer 18

test
unknown
dihybrid

Question 19

independent assortment occurs when genes are located on ___ chromosomes and will result in gametes that have ____ likelihood. Which of Mendel’s laws describes this

Answer 19

different
Equal
2nd law