Question

Question 61 pts __________ is a homozygous recessive genotype. BB Bb bb blue Flag this Question...

Question 61 pts

__________ is a homozygous recessive genotype.

BB
Bb
bb
blue

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Question 71 pts

If both parents are heterozygotes (Bb), what is the probability that their offspring will have a brown phenotype or have brown eyes?

25%
50%
75%
100%

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Question 81 pts

If both parents are heterozygotes (Bb), what is the probability that their offspring will have a heterozygous genotype?

25%
50%
75%
100%

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Question 91 pts

If the mother is homozygous dominant for brown eyes, and the dad is a heterozygote, what is the probability of producing a blue phenotype in the offspring?

25%
50%
75%
100%
0%

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Question 101 pts

If the mother is homozygous dominant for brown eyes, and the dad is a heterozygote, what is the probability of producing a homozygous dominant offspring?

25%
50%
75%
100%
0%

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Question 111 pts

When crossing two heterozygous plants with incomplete dominance for Red and White, what is the probability that they will have pink offspring?

25%
50%
75%
100%
0%

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Question 121 pts

What is the probability of having a child with B blood type, from parents who have AB and A0?

25%
50%
75%
100%
0%

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Question 131 pts

If the alleles for different traits (eye and hair color) are on different chromosomes, then during anaphase of meiosis I and II, the chromosomes or eye and hair color can end up in different gametes. This is called _________________.

linked traits
incomplete dominance
independent assortment
complete dominance

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Question 141 pts

In a dihybrid cross for brown/blue eyes and big/little teeth, what is the probability of having a big tooth, brown eyed child?

9/16
3/16
1/16
0%

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Question 151 pts

The 22 pairs of chromosomes in a human nucleus that do not code for gender are called _________________.

body chromosomes
sex-linked
autosomal
autolysal

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Question 161 pts

If the 23rd pair of chromosome's genotype is "XY" then the phenotype is a __________ and if the 23rd pair's genotype is "XX" then the phenotye is a ________________.

female, male
male, female
male, gender neutral
gender neutral, female

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Question 171 pts

Which sex determines whether the offpsring are male or female?

The male can donate either an X or a Y, so determines the sex.
The male can donate either an X or a X, so determines the sex.
The female can donate either an X or a Y, so determines the sex.
The female can donate either an X or a X, so determines the sex.

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Question 181 pts

If a female is a carrier for hemophilia (XXh), her phenotype will be ___________.

hemophilia
normal blood clotting
color blind
normal color vision

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Question 191 pts

If a male's phenotype is hemophilia, he got it from his _______________.

father
mother
mother and father

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Question 201 pts

If a female's phenotype is hemophilia, then she got it from her ________________.

father
mother
mother and father

Homework Answers

Answer #1

Question 61 pts

The answer is: bb

BB - homozygous dominant

Bb - Heterozygous

blue - its a phenotype and not a genotype.

Question 71 pts

The answer is: 75%

Bb x Bb

Punnett square analysis:

B b
B BB (Brown) Bb (Brown)
b Bb (Brown) bb (Blue)

The Punnett square analysis shows that 75% of their offspring will have brown phenotype.

Question 81 pts

The answer is: 50%

Bb x Bb

Punnett square analysis:

B b
B BB (Homozygous) Bb (heterozygous)
b Bb (heterozygous) bb (homozygous)

The Punnett square analysis shows that 50% of their offspring will have a heterozygous genotype.

Question 91 pts

The answer is: 0%

BB x Bb

Punnett square analysis:

B B
B BB (Brown) BB (Brown)
b Bb (Brown) Bb (Brown)

The Punnett square analysis shows that none of their offspring will produce a blue phenotype.

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