BIOL 1201 Lecture Notes - Lecture 5: Gamete, New Zealand National Football Team, Meiosis

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skycamel466

23 Nov 2015

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What is the probability of producing an offspring with the genotype r/ - y/y: 1/8, 3/8, 1/16, 3/16, ex: r/r y/y a/a x r/r y/y a/a. What are the phenotypes of the parents: both are heterozygous; if there are two individuals that are phenotypically the same and they produce a variety of phenotypes, they. Must be heterozygous: variations on mendel"s theme. This gene is located on the x chromosome. C/c), what is the probability of producing an offspring w/the phenotype dominant a, dominant b, dominant d, and recessive c: 1/16, 3/32, 3/16, 9/16, 7/8. Importance of signaling mechanisms: nobel prizes 5 in the last 18 years, question, when epinephrine binds to cardiac (heart) muscle cells, it speeds their contraction. When it binds to muscle cells of the small intestine, it inhibits their contraction. Thromboxane a2 in turn stimulates vascular spasm and attracts additional platelets to the injured site.

Related Questions

1. In the flour moth, Ephestia, pigment production in eyes of moths depends on a pair of nuclear alleles, A and a. The A allele directs production of a diffusible substance that his involved in pigment synthesis. This substance diffuses from a heterozygous or homozygous dominant mother into all her young, enabling them to synthesize the final pigment. All progeny of a dark-eyed female have dark eyes initially. As the moths age, only those with an AA or Aa genotype can make the diffusible substance for themselves and continue to produce pigment. Without the diffusible substrate, pigment is no longer produced and the eyes lighten with age. What eye color do you expect in young progeny, and then as they age, from each of these crosses? a) Female AA X Male AA b) Female AA X Male Aa c) Female AA X Male aa d) Female Aa X Male AA e) Female Aa X Male Aa f) Female Aa X Male aa g) Female aa X Male AA h) Female aa X Male Aa i) Female aa X Male aa

In the flour moth, Ephestia, pigment production in eyes of moths depends on a pair of nuclear alleles, A and a. The A allele directs production of a diffusible substance that his involved in pigment synthesis. This substance diffuses from a heterozygous or homozygous dominant mother into all her young, enabling them to synthesize the final pigment. All progeny of a dark-eyed female have dark eyes initially. As the moths age, only those with an AA or Aa genotype can make the diffusible substance for themselves and continue to produce pigment. Without the diffusible substrate, pigment is no longer produced and the eyes lighten with age.

What eye color do you expect in young progeny, and then as they age, from each of these crosses?

a) Female AA X Male AA

b) Female AA X Male Aa

c) Female AA X Male aa

d) Female Aa X Male AA

e) Female Aa X Male Aa

f) Female Aa X Male aa

g) Female aa X Male AA

h) Female aa X Male Aa

i) Female aa X Male aa

1. Ifa species of flower has the allele R (red) which is incompletelydominant to the allele r (white) what color is the genotype of anindividual with a red flower? Choose as many as areappropriate. (Points: 2) RR
Rr
rr
R
r

2. A gene can be defined as... (Points :2)

alternateforms of the DNA for a trait
geneticcombination that determines the observable form of a trait
partof the DNA that codes for a specific protein
theobservable form of a trait

3. A homozygote is an individual in which(Points : 2)

allelesof the gene pair are different
allelesof the gene pair are identical
genesare homolgous
traitsare passed from parents to progeny

4. Which of the following might be aphenotype? (Points : 2)

A
Aa
pinkflowers
AaDd

5. What does "F2 generation" refer to? (Points: 2)

theparents
theoffspring of the parental generation
theoffspring of crossing the F1 generation with itself
theoffspring of crossing the F1 generation with the parentalgeneration

6. Which of the following genotypes isheterozygous? (Points : 2)

Aa
AABB
A
a

7. Which statement best describes a dominantallele? (Points : 2)

theallele expressed in the homozygote
theallele expressed in the heterozygote
theallele that is most common in the population
theallele that is lethal