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This topic contains 2 attachments.
Home Q & A Board Science-Related Homework Help High School Level Science
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princess001 princess001
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11 years ago
First attachment asks for :
1. A drosophila with white eye colour was crossed with a Drosophila with apricot eye colour. 50% of the offspring had apricot eye colour and 50% had honey eye colour. The genotypes of the parents were E4E4 and
a) E1E4
b) E2E2
c) E2E3
d) E2E4

2. If a man has type AB blood and a woman has type A blood, what possible blood types could their children have?

3. Two different genes control the expression of coat colour in an organism. The allele B produces a black coat colour and the allele G produces a gray-striped coat. The gene B influences the expression of gene G. The gray-stripped coat pattern appears only when gene B is homozygous recessive. An albino (coat colour lacking) occurs when both genes are homozygous.
A pure-breeding black coated organism was mated with an albino organism; all offspring had black coats.
The genotypes of the parents of these F1 offspring could be
a) BbGG x bbgg
b) bbGG x BBgg
c) Bbgg x bbGG
d) BBGG x bbgg

4. Second attachment asks for:
A valid conclusion based on the pedigree is that
a) individual II-3 is unable to father children with type B blood
b) individuals I-1 and I-2 both carry the allele i
c) individuals II-2 and III-4 are both homozygous for blood type alleles
d) individual II-4 is homozygous for the allele IA
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scooterbscooterb
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#1
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11 years ago Edited: 11 years ago, scooterb
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princess001 Author
wrote...
#2
11 years ago
Thank you so much that was reallu helpful Slight Smile
wrote...
#3
10 years ago
Does anyone have the answer for the first question???
wrote...
#4
10 years ago
The answer for the 1st question is C. E2E3
wrote...
#5
10 years ago
thank you!
EA
wrote...
#6
10 years ago
can someone pls explain why 1 is c? thnx
wrote...
#7
Staff Member
Educator
10 years ago
Quote from: EA (10 years ago)
can someone pls explain why 1 is c? thnx

Do you know how to create a dihybrid cross?
Mastering in Nutritional Biology
Tralalalala Slight Smile
EA
wrote...
#8
10 years ago
Quote from: padre (10 years ago)
Quote from: EA (10 years ago)
can someone pls explain why 1 is c? thnx

Do you know how to create a dihybrid cross?
i suck at them Frowning Face
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