Solving Genetic Problems

1)

  a)

Rr	R	r
R	RR	Rr
r	Rr	rr

 

 

 

b)

RrYy	R	r	Y	y
R	RR	Rr	RY	Ry
r	Rr	Rr	Yr	yr
Y	YR	Yr	YY	yr
y	Ry	yr	Yy	Yy

 

 

 

c)

rrYy	r	r	Y	y
r	rr	rr	Yr	yr
r	rr	rr	Yr	yr
Y	Yr	Yr	Yy	Yy
y	ry	yr	Yy	Yy

 

 

d)

RrYY	R	r	Y	Y
R	RR	Rr	YR	YR
r	Rr	Rr	Yr	Yr
Y	RY	Yr	YY	YY
Y	RY	Yr	YY	YY

 

 

2)

 

a)      D is the genotype of a diploid cell.

b)      GG is the genotype of a haploid cell.

c)       P is the genotype of a diploid.

d)      The ee is the genotype of a haploid.

 

 

 

 

3)  The yellow and the white guinea pigs both had dominant color alleles so the results were always the same. On the other hand the cream guinea pig had both dominant and recessive color alleles; this is known as the law of segregation.

 

4)  The genotype of the parents was most likely BbBb or bBbB. This type of inheritance represents the law of independent assortment.

 

5) The peas would be 3 yellow to 1 green, this is an example of the law of independent assortment.

 

6)  The squash would be 3 white to 1 yellow, this is an example the law of independent assortment.

 

7) The predicted phenotype of the flowers would be 1white-2 pink-1red, this is an example of the law of segregation.

 

8) The male child would have about a 43% chance of having normal blood clotting. This is an example of the law of independent assortment.

 

9) Their children’s blood types would most likely be

AO BO	A	O	B	O
A	AA	AO	AB	AO
O	AO	OO	AB	OO
B	AB	BO	BB	OO
O	AO	OO	BO	OO

 

This is an example of the law of independent assortment.

 

 

10) The genotypes of skin from darkest to lightest are as follows: AaBBCC, AaBbCc, AAbbcc,   aabbCc. This is an example of independent assortment.

 

                                                             Flip a Coin Lab

                                                                     

 

 

 

 

                                                          Mother   Father         Genotype   Phenotype

                                                                          Alleles    Alleles

Sex of child		girl
Hair type	c	C	Cc	wavy
Widows Peak	W	W	WW	Widows Peak
Eyebrows I	b	b	bb	fine
Eyebrows II	N	N	NN	Not connected
Color of eyebrows	h	H	hh	lighter
Eyes distance apart	e	E	Ee	Average distance
Eye size	E	e	Ee	Medium
Eye shape	A	a	Aa	Wide
Eye slant	H	H	HH	horizontal
Eyelashes,	l	L	Ll	Long
Eye Color	aBC	ABC	aABBCC	Brown
Mouth size	M	m	Mm	Average
Lips	l	L	Ll	thick
Protruding lower lip	H	H	HH	Very protruding
Dimples	H	H	HH	Present
Nose size	n	N	Nn	Average
Nose shape	r	r	rr	pointed
Nostril Shape	r	r	rr	pointed
Earlobe attachment	F	F	FF	Free
Freckles	f	F	Ff	Present
Hair Color	ABc	Abc	AABbcc	Dark blond
Chin Shape I	v	v	vv	Less prominent
Chin Shape II	R	R	RR	Round
Cleft in chin	v	V	Vv	Absent

 The is what she looks like, it would be better if I found a sketch artist.