Introduction To Genetics unit 9

Question 1

We inherit 2 sets from who.

Answer 1

One from mom and one form dad

Question 2

Paired chromosomes are called what?

Answer 2

Homologous chromosomes

Question 3

Gene

Answer 3

A segment of DNA that codes for a particular trait

Question 4

Trait

Answer 4

An inherited characteristic

Ex: eye color

Question 5

Allele

Answer 5

Different versions (alternate forms) for a gene at a single location in the DNA

Question 6

What are some examples of alleles

Answer 6

For the eye color gene there are several alleles- brown, blue, green, etc

Question 7

Dominant

Answer 7

Observed trait of an organism. Masks any other allele.

Brown eyes B

Question 8

Recessive

Answer 8

Masked by dominant alleles

Blue eyes b

Question 9

Where are alleles found

Answer 9

Homologous chromosomes

Question 10

Whom do you receive alleles from

Answer 10

Mom and dad

Question 11

How many alleles do you have

Answer 11

2 one from each parent

Question 12

Genotype

Answer 12

The alleles of an individual

Question 13

HH two dominant is

Answer 13

Homozygous dominant

Question 14

hh two recessive is

Answer 14

Homozygous recessive

Question 15

Hh one dominant one recessive

Answer 15

Heterozygous

Question 16

Phenotype

Answer 16

The appearance of of an individual

Question 17

What is an example of phenotype

Answer 17

There are only three types of genotype a (HH, Hh, hh) but only two appearances (phenotype = hitchhikers thumb or not)

Question 18

Chromosomes are?

Answer 18

Discrete package of DNA that codes for genes.