Genetics and Developmental Biology

In humans colorblindness is a recessive sex-linked trait.?

In humans colorblindness is a recessive sex-linked trait.?

What is the probability that the children of a woman heterozygous for colorblindness an a man with normal color vision will be colorblind? explain... I honestly don't understand it. (:

Askelto2   779   2 Replies

jujs9322

If Colorblindness is a sexed-linked recessive trait, while normal color vision is dominant.?

If Colorblindness is a sexed-linked recessive trait, while normal color vision is dominant.?

A. If two parents with normal vision have a colorblind son, what are the parents genotypes?

B. What are the chances that their daughter will be colorblind?

ask4help   724   2 Replies

dattrussianki

cDNA vs. Genomic Library

cDNA vs. Genomic Library

When looking for a gene of interest, we often scan cDNA libraries. What is the difference between a cDNA and a genomic library? Can you think of situations in which we would probe a genomic library?

selfstudy   2498   2 Replies

selfstudy

How Do You Get a Certain DNA Sequence?

How Do You Get a Certain DNA Sequence?

You want to make a bunch of DNA from a sample you have, but you only want a certain sequence from the DNA you've isolated. What do you do? Give any components involved in the process, in addition to stating what the process is.

selfstudy   2136   2 Replies

biolove

Compare and Contrast h2 and H2

Compare and Contrast h2 and H2

Compare and contrast h2 and H2. Discuss the limitations of each in determining heritability, especially in humans.

selfstudy   2580   2 Replies

selfstudy

Chi-Squared Test

Chi-Squared Test

One-thousand individuals were screened for their genotype at the MN blood group locus. The numbers of each genotype were:

MM      MN      NN
298      48

selfstudy   1434   2 Replies

selfstudy

The son of a man who does not have Huntington's develops Huntington's after age

The son of a man who does not have Huntington's develops Huntington's after age

The son of a man who does not have Huntington's develops Huntington's after age 50. His son develops Huntington's in his late thirties.

sperl   596   2 Replies

als2915

Are embryo cells the only pluripotent cells? Or can embryo cells also be totipotent cells?

Are embryo cells the only pluripotent cells? Or can embryo cells also be totipotent cells?

Are embryo cells the only pluripotent cells? Or can embryo cells also be totipotent cells?

bugbugs4   630   2 Replies

buggmoma10

Blastocyst,Pluripotent,Binary Fission,Apoptosis,Cell culture...What are they?

Blastocyst,Pluripotent,Binary Fission,Apoptosis,Cell culture...What are they?

can you help me with my science homework?
What do these terms mean?
Blastocyst
Embryo
Pluripotent
Binary Fission
Apoptosis
Cell culture

rjandmj82   430   2 Replies

rkarthik301

Is a stem cell totipotent or pluripotent?

Is a stem cell totipotent or pluripotent?

also, explain your answer.

rjframe   477   2 Replies

juli3_jon3s

Tumor Formation

Tumor Formation

We now understand that mutations that cause the inhibition of apoptosis are found in tumors. Because proliferation itself is not induced by the inhibition of apoptosis, explain how this inhibition might co

selfstudy   1664   2 Replies

sperl

If a gene pool has multiple alleles for a single trait, which of the following is true?

If a gene pool has multiple alleles for a single trait, which of the following is true?

A:There is more than one dominant or recessive allele for a given trait within that gene pool.
B:Each trait is controlled by at least two alleles.
C:There is one dominant and one recessive allele for that trait within the gene pool.
D:Each trait is

snadra   729   2 Replies

rlrim1

How many alleles iinfluence the phenotype in complete dominance?

How many alleles iinfluence the phenotype in complete dominance?

How many alleles influence the phenotype in incomplete dominance?

How can cross-pollination of pea plants be controlled?

rlee02135   671   2 Replies

snadra

How is blood type inherited? Can parents with A and B have a child with O?

How is blood type inherited? Can parents with A and B have a child with O?

I saw something on a sitcom that confused me. They said a parent with B cannot have a child with O. Is that right?

How is blood type inherited? Can two parents with different types have a child with a third type?

DAVEMUSSO   604   2 Replies

irina

Would plants with the genotype TT and Tt have the same phenotype or different phenotypes?

Would plants with the genotype TT and Tt have the same phenotype or different phenotypes?

If two plants had the genotypes TT and Tt would they have different phenotypes or the same? Would they have all dominant alleles or recessive?

rlee02135   810   2 Replies

julesh22

Which of the following terms best describes when the phenotype of the heterozygote differs from the phenotype?

Which of the following terms best describes when the phenotype of the heterozygote differs from the phenotype?

Which of the following terms best describes when the phenotype of the heterozygote differs from the phenotypes of both homozygotes?
A.  Pleiotopy
B.  Incomplete dominance
C.  Epistasis
D.  Multiple alleles

micromarc   1941   2 Replies

julesh22

If an organism expresses a recessive phenotype, can you tell the genotype? Explain your answer by giving an ex?

If an organism expresses a recessive phenotype, can you tell the genotype? Explain your answer by giving an ex?

If an organism expresses a recessive phenotype, can you tell the genotype? Explain your answer by giving an example Please.

Fire_Fly   6617   2 Replies

julesarth

How would you determine the genotype of a person with a dominant phenotype if they don't wanna have sex?

How would you determine the genotype of a person with a dominant phenotype if they don't wanna have sex?

Seriously, I'm not trying to be a pervert. But according to my biology book, you can perform a test cross (which means they have sex) between the individual witht he dominant phenotype with an individual that has a homozygous recessive phenotype. But

RLeanne   519   2 Replies

rk_9879

If a gene is carried on the same chromosome as another, would results of phenotype be the same?

If a gene is carried on the same chromosome as another, would results of phenotype be the same?

If a gene is carried on the same chromosome as another, would results of baby's phenotype be the same? Why or why not?

Thanks
For example hair and eye color. Would the phenotype still be the same or would it change because those two genes are now on

microbioflop   567   2 Replies

Julia

Example of a change in genes that results in a new phenotype?

Example of a change in genes that results in a new phenotype?

I know this is a stupid question, but I'm confused about what exactly a phenotype is. Could someone give me an example of a change in genes that results in a new phenotype?
So if there were a change in genes, resulting in a new phenotype, would this

microlin   303   2 Replies

rl93

How to do the geno/phenotype ratios of a dihyrbid cross?

How to do the geno/phenotype ratios of a dihyrbid cross?

Hey guys, I know how to do them for a monohybrid cross, for ex: genotype ratio: 0:4:0 and phenotype ratio: 1:0

But how do I do geno/phenotype ratios of a dihybrid cross? Is it the same as what you do for monohybrids, only with greater values?
What I

rlcdiver11   499   2 Replies

rl127

(read details) and Give the phenotype and genotype when a homozygous?

(read details) and Give the phenotype and genotype when a homozygous?

In tomato plants, long vines are dominant over short vines. Give the phenotype and genotype when a homozygous long vined plant is crossed with a heterozygous long vined plant.

rkahn   564   2 Replies

rlfowler

Why does natural selection act on the phenotype?

Why does natural selection act on the phenotype?

Why does natural selection act on the phenotype, rather than the genotype? I thought the genotype basically determined the phenotype?

rkarthik301   6205   2 Replies

fire_crystal

Heredity questions: Are there only 23 chromosomes in 1 gamete?; How many genes are in 1 chromosome?; and...?

Heredity questions: Are there only 23 chromosomes in 1 gamete?; How many genes are in 1 chromosome?; and...?

My questions regard the heredity of the human species:

Are there only 23 chromosomes in 1 gamete?  
How many genes are in 1 chromosome?
How many alleles are in 1 gene?

Thanks, and I will give best answer.
Steve, you didn't answer my question.

Rkumar2577   483   2 Replies

rk90

Which gamete determines the sex of the resulting individual?

Which gamete determines the sex of the resulting individual?

Which gamete determines the sex of the resulting individual?

Julia Jeffrey   520   2 Replies

microB

Why would a gamete with Ee and one with Rr be wrong?

Why would a gamete with Ee and one with Rr be wrong?

This has to do with Mendel and genetics.

rlee02135   482   2 Replies

micromarc

What is the condition where a diploid gamete fuses with a haploid gamete?

What is the condition where a diploid gamete fuses with a haploid gamete?

What is the condition where a diploid gamete fuses with a haploid gamete?

jules_1978   1743   2 Replies

FISH0818

The number of chromosomes in a gamete is represented by what symbol?

The number of chromosomes in a gamete is represented by what symbol?

The number of chromosomes in a gamete is represented by the symbol
A. z.
B. y.
C. n.
D. x.
C. n?

Rkumar2577   2431   2 Replies

rlalonie28

Are the correct numbers of chromosomes in a gamete determined during mitosis or meiosis?

Are the correct numbers of chromosomes in a gamete determined during mitosis or meiosis?

?

FISH0818   652   2 Replies

rlalonie28

What kind of cell results when a diploid and a haploid gamete fuse during fertilization?

What kind of cell results when a diploid and a haploid gamete fuse during fertilization?

What kind of cell results when a diploid and a haploid gamete fuse during fertilization?

juli3_jon3s   1697   2 Replies

micromarc

How do you get a gamete without crossing over?

How do you get a gamete without crossing over?

And an explanation/examples please! Thank You!

rk_9879   618   2 Replies

rkkovach

What process in the first prophase of meiosis makes every gamete different?

What process in the first prophase of meiosis makes every gamete different?

What process in the first prophase of meiosis makes every gamete different?

microbiology1   1913   2 Replies

fire_crystal

How do I supply the number of chromosomes and the number of different combinations of chromosomes in a gamete?

How do I supply the number of chromosomes and the number of different combinations of chromosomes in a gamete?

for a specific organism when given the number of chromosomes in its somatic cells?

Rkamu   559   2 Replies

microbioflop

Would a cell with any 23 chromosomes be considered a gamete?

Would a cell with any 23 chromosomes be considered a gamete?

Why or why not? Please answer fast i need help with my bio homework.

Micromowie   1025   2 Replies

rkim12

compare the genes on the chromosomes in the gamete cells when crossing over occurs and when it does not occur.?

compare the genes on the chromosomes in the gamete cells when crossing over occurs and when it does not occur.?

compare the genes on the chromosomes in the gamete cells when crossing over occurs and when it does not occur. Are they the same or different?

rknicker   1621   2 Replies

rlc1226

The number of gamete types from independent assortment of the homologues during meiosis in humans would be?

The number of gamete types from independent assortment of the homologues during meiosis in humans would be?

1. 46 x 2 (92)
2. 23^2 (529)
3. 2^23 (78 million)
4. 21 x 2 (42)

Help please?

rkearl27   692   2 Replies

microman

What is the difference between a gamete and a haploid?

What is the difference between a gamete and a haploid?

What is the difference between a gamete and a haploid?

microbioflop   5144   2 Replies

rk_9897

Why is there only one homologous pair of chromosomes in a gamete where n=14?

Why is there only one homologous pair of chromosomes in a gamete where n=14?

Thanks!

julia.k18   656   2 Replies

MicroGirl

Research since Mendel's time has established that the law of the segregation of genes during gamete formation?

Research since Mendel's time has established that the law of the segregation of genes during gamete formation?

a) applies to all forms of life
b) applies to all sexually reproducing organisms
c) applies to all asexually reproducing organisms
d) applies only to unicellular organisms
e) is invalid

Would appreciate the help, thank you!

MicroMan84   1394   2 Replies

Rkamu

Which of the following represents a gamete that can be produced by an individual with the genotype YySs?

Which of the following represents a gamete that can be produced by an individual with the genotype YySs?

Which of the following represents a gamete that can be produced by an individual with the genotype YySs? (Mark all that apply.)

  1. ys  
  2. YS  
  3. yS  
  4. Ys

firestorm5   1209   2 Replies

rla0705