Unit 14 Alleles and Genes

Question 1

In humans, a sperm cell has _____ chromosomes and an egg cell has ______ chromosomes

Answer 1

23, 23

Question 2

When sperm + eggs come together, it fertilized egg, and has _____ chromosomes

Answer 2

46

Question 3

What is the portion of chromosomes?

Answer 3

GENES that can CODE for SPECIFIC TRAITS

Question 4

Blue eyes, black eyes, blonde hair, brown hair, are the examples of_____

Answer 4

traits

Question 5

many traits involve multiple ________.
Genes can come in varieties known as ______.
______ are formes of a ______.

Answer 5

genes, alleles

Question 6

If treating this is a single gene trait, we would say the gene is a _____ tasting gene

Answer 6

PTC

Question 7

T ______ _________ (tasting)
t ________ _________ (non tasting)

Answer 7

dominant alleles
recessive alleles

Question 8

TT ________ __________ (PTC/non)
Tt ________ __________ (PTC/non)
tt ________ __________ (PTC/non)

Answer 8

Homozygous dominant
Heterozygous
Homozygous recessive