Genes And Alleles

Question 1

Define homozygous

Answer 1

Homozygous is having identical alleles for a trait. Whether it is dominant or recessive.
Example: BB, bb

Question 2

Define heterozygous

Answer 2

Heterozygous is having different alleles for a trait.
Example: Bb

Question 3

Define phenotype

Answer 3

Phenotype is an individuals observable traits, such as eyecolor, hair color, height and blood type.

Question 4

Define genotype

Answer 4

Genotype is the genetic make up of an organism.
Example: Bb, BB, bb

Question 5

Name the four bases

Answer 5

Adenine (A)
Cytosine (C)
Guanine (G)
Thymine (T)

Question 6

Name the strands (bases) that connect to each other by chemical bonds

Answer 6

A + T (Adenine + Thymine)
C + G (Cytosine + Guanine)

Question 7

How would you determine the babies gender from the sex chromosomes

Answer 7

A mothers egg = X
Fathers sperm = XY

Therefore:
Girl = XX
Boy = XY