Genetics and Developmental Biology

Amensalism is the type of interaction in which a. one participant benefits and t

Amensalism is the type of interaction in which a. one participant benefits and t

Amensalism is the type of interaction in which
a. one participant benefits and the other is unaffected.
b. two organisms use the same limited resources.
c. one participant is harmed while the other benefits.
d. one participant is

arealhero   198   3 Replies

milestone23

Dihybrid Inheritance of two traits in Maize (corn)

Dihybrid Inheritance of two traits in Maize (corn)

1. A corn plant homozygous in both yellow seed colour and smooth coat is pollinated with a purple and wrinkled corn plant. Make the P1 = ? X ?
 
2. Complete a Punnett Square of the parental cross. Record genotype(s) and phenotype(s). Recor

ccutiee97sience   198   2 Replies

bio_man

The PCR (polymerase chain reaction) protocol that is currently used in laborator

The PCR (polymerase chain reaction) protocol that is currently used in laborator

The PCR (polymerase chain reaction) protocol that is currently used in laboratories was facilitated by the discovery of a bacterium called Thermus aquaticus in a hot spring inside Yellowstone National Park, in Wyoming. This organism contains a heat-s

nite_n_day   197   2 Replies

nite_n_day

How to determine if carrier for the disease?

How to determine if carrier for the disease?

A is allele for enzyme involved in making melanin and a is the allele that codes for the inactive form of the enzyme. Albinism is observed in an individual with two non-functional copies of the enzyme.

a.) What is the genotype of an indiv

sldamm1   197   1 Reply

bio_man

What fraction of offspring of the cross AaBb × AaBb is homozygous for all the do

What fraction of offspring of the cross AaBb × AaBb is homozygous for all the do

What fraction of offspring of the cross AaBb × AaBb is homozygous for all the dominant alleles, assuming that they are on different chromosomes?
a. 1/4
b. 1/8
c. 1/16
d. 1/32
e. 1/64

arealhero   197   3 Replies

milestone23

In eukaryotic cells, each chromosome has a. one origin of replication. b. two or

In eukaryotic cells, each chromosome has a. one origin of replication. b. two or

In eukaryotic cells, each chromosome has
a. one origin of replication.
b. two origins of replication.
c. many origins of replication.
d. only one origin of replication per nucleus.
e. None of the above

arealhero   197   3 Replies

milestone23

_______ interactions benefit a consumer while harming the species that is consum

_______ interactions benefit a consumer while harming the species that is consum

_______ interactions benefit a consumer while harming the species that is consumed.
a. Mutualistic
b. Antagonistic
c. Agonistic
d. Both a and c
e. None of the above

arealhero   197   3 Replies

milestone23

In women, the function of progesterone is _________, and in men the function is _________.

In women, the function of progesterone is _________, and in men the function is _________.

In women, the function of progesterone is _________, and in men the function is _________.
      a.   to increase sexual interest . . . also to increase sexual interest
      b.   related to preparing the body for pregnancy . . . . unknown
      c.   to

Kai96   197   3 Replies

Gorgias

Explain how polygenic inheritance differs from multiple alleles.

Explain how polygenic inheritance differs from multiple alleles.

Explain how polygenic inheritance differs from multiple alleles.

Cali Fornia   197   2 Replies

Cali Fornia

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

Proteins are modified before they leave the cell
 
a) True
 
b) False

JoeE   197   1 Reply

bio_man

Questions help please soon ______SOME ARE ATTACHED

Questions help please soon ______SOME ARE ATTACHED

1) SEE FIRST PHOTO ATTACHED

2) SEE SECOND PHOTO ATTACHED

3) In tomatoes, red fruit (R) is dominant over yellow fruit (r).

Red tomato plants were cross pollinated with yellow tomato plants.  The next generation of

Anonymous   197   2 Replies

Anonymous

The structure of DNA explains which three major properties of genes?

The structure of DNA explains which three major properties of genes?

The structure of DNA explains which three major properties of genes?
a. They contain information, direct the synthesis of proteins, and are contained in the cell nucleus.
b. They contain nitrogenous bases, direct the synthesis of RNA, and a

arealhero   196   3 Replies

milestone23

Mutations that result in human disease include a. expanding triplet repeats that

Mutations that result in human disease include a. expanding triplet repeats that

Mutations that result in human disease include
a. expanding triplet repeats that occur during DNA synthesis.
b. point mutations that do not change the amino acid sequence of the gene.
c. prion diseases such as “mad cow” in humans.

arealhero   196   3 Replies

milestone23

What is the statistical principle underlying genetic health risk assessment is called?

What is the statistical principle underlying genetic health risk assessment is called?

What is the statistical principle underlying genetic health risk assessment is called?

▸ causality

▸ the placebo effect

▸ case/control

▸ association

▸ determinism

Bince   196   1 Reply

soniazhai

What is the difference between F+ and F- bacteria?

What is the difference between F+ and F- bacteria?

What is the difference between F+ and F- bacteria?

mikael   195   2 Replies

mikael

In bacteria, the enzyme that removes the RNA primers is called a. DNA ligase. b.

In bacteria, the enzyme that removes the RNA primers is called a. DNA ligase. b.

In bacteria, the enzyme that removes the RNA primers is called
a. DNA ligase.
b. primase.
c. reverse transcriptase.
d. helicase.
e. DNA polymerase I.

arealhero   195   3 Replies

milestone23

Animal viruses are termed obligate parasites. What is the meaning of this term?

Animal viruses are termed obligate parasites. What is the meaning of this term?

Animal viruses are termed obligate parasites. What is the meaning of this term?

arealhero   195   3 Replies

milestone23

Which of the following statements about the lac operon is not true?

Which of the following statements about the lac operon is not true?

Which of the following statements about the lac operon is not true?
a. When lactose binds to the repressor, the repressor can no longer bind to the operator.
b. When lactose binds to the operator, transcription is stimulated.
c. When t

arealhero   195   3 Replies

milestone23

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

In DNA, the terms 3’ and 5’ refer to the

A) bonds that form between  adenine and thymine and between guanine and cytosine

B) carbon atoms of deoxyribose to which phosphate groups may bond

C) cross-linking of the

JoeE   195   1 Reply

bio_man

Genetics Help for Practice (Bio)

Genetics Help for Practice (Bio)

Through their experiments, Hershey and Chase made what contributions to our understanding of genetics?

A) DNA alone is the hereditary material and not protein

B) How the bacteriaphage virus infects bacteria

C) Discove

JoeE   195   1 Reply

bio_man

Pyrophosphate is a a. building block for DNA synthesis. b. by-product of DNA syn

Pyrophosphate is a a. building block for DNA synthesis. b. by-product of DNA syn

Pyrophosphate is a
a. building block for DNA synthesis.
b. by-product of DNA synthesis.
c. precursor to DNA synthesis.
d. fire phosphate used in nucleic acid metabolism.
e. All of the above

arealhero   194   3 Replies

milestone23

8 QUESTIONS PLEASE ANSWER ALL SOME ARE ATTACHED

8 QUESTIONS PLEASE ANSWER ALL SOME ARE ATTACHED

1) SEE FIRST PHOTO ATTACHED:

Use the following diagram to answer the next question.

Place the number that represents the base, cell structure, or unit of inheritance in the blank beside each.

Adenine    &nbs

Anonymous   194   2 Replies

Anonymous

Science question, genetics!?

Science question, genetics!?

Is this a simple enough definition? -Heterozygous is when someone/something possesses two different forms of a particular gene, one inherited from each parent. It has to be pretty basic!

ilovemarica   193   5 Replies

lemonz

Amniocentesis is commonly used in prenatal screening for _______.

Amniocentesis is commonly used in prenatal screening for _______.

Amniocentesis is commonly used in prenatal screening for _______.

arealhero   193   3 Replies

milestone23

Explain basic concepts of single gene inheritance using the terms alleles, chromosomes,

Explain basic concepts of single gene inheritance using the terms alleles, chromosomes,

I need to explain basic concepts of single gene inheritance using the terms alleles, chromosomes, homozygous, heterozygous, dominant, recessive?

I am a grade 10 student and need your help, please and thank you.

Sasumhouse   193   1 Reply

bio_man

Population Genetics 2 questions ASAP

Population Genetics 2 questions ASAP

1) In fruit flies, long wings (L) are dominant over short wings (l).

In a population of 60 fruit flies, 38 have LL genotypes, 22 have Ll genotypes, and 0 have ll genotypes.

Find the frequency of

a.    long-w

Anonymous   193   2 Replies

Anonymous

Roles in DNA replication help..

Roles in DNA replication help..

All of the following play a role in DNA replication EXCEPT _______.
   RNA primase
   helicase
   DNA primase
   RNA primers

khassin101   192   1 Reply

Mint

Refer to the diagram below showing the RFLP patterns at a hypothetical locus in

Refer to the diagram below showing the RFLP patterns at a hypothetical locus in

Refer to the diagram below showing the RFLP patterns at a hypothetical locus in a family wherein some individuals develop high cholesterol. Immediately below the RFLP patterns are the cholesterol levels of each corresponding individual. What inferenc

arealhero   192   3 Replies

milestone23

In fragile-X syndrome, a. females are affected more severely than males. b. a sh

In fragile-X syndrome, a. females are affected more severely than males. b. a sh

In fragile-X syndrome,
a. females are affected more severely than males.
b. a short sequence of DNA is repeated many times to create the fragile site.
c. both the X and Y chromosomes tend to break when prepared for microscopy.
d.

arealhero   192   3 Replies

milestone23

__________ is a foot deformity characterized by the inward turning of the foot at the ankle with the ...

__________ is a foot deformity characterized by the inward turning of the foot at the ankle with the ...

__________ is a foot deformity characterized by the inward turning of the foot at the ankle with the toe fixed in a tiptoe position.
 
  Fill in the blank(s) with correct word

19zbell   192   2 Replies

19zbell

The localization of enzyme is the one and only factor that creates the difference between

The localization of enzyme is the one and only factor that creates the difference between

I have a assignment. It is illustrated like this,

There is a cell that has a localized intracellular enzyme. It divides into two distinct characteristic daughter cells. However, there is only one of the daughter cells gets the enzyme produ

anna_lee   192   5 Replies

bio_man

A common method for sorting DNA by size is _______.

A common method for sorting DNA by size is _______.

A common method for sorting DNA by size is _______.

arealhero   191   3 Replies

milestone23

Some primatologists believe that the competitive pressures....

Some primatologists believe that the competitive pressures....

Some primatologists believe that the competitive pressures produced by several variables worked together to cause the brain to enlarge and reorganize. If this is true, which of the following occurred first?

Sociality
      
Innovatio

Eclipsed11   191   4 Replies

Eclipsed11

Most known parasitic relationships involve parasites with nonlethal effects on t

Most known parasitic relationships involve parasites with nonlethal effects on t

Most known parasitic relationships involve parasites with nonlethal effects on their hosts. The most likely explanation for this is that
a. parasitic tactics that have lethal effects are energetically expensive for the parasite.
b. parasiti

arealhero   190   3 Replies

milestone23

How do tiny kelp spores get enough energy to grow???

How do tiny kelp spores get enough energy to grow???

When a kelp spores fall in a kelp forest thing, and is surrounded by other giant kelp, how does it get enough energy to grow since it can't carry out photosynthesis since there is no light???

finksta   189   1 Reply

nurseverse

In meiosis, a. a single nucleus gives rise to two daughter nuclei. b. the daught

In meiosis, a. a single nucleus gives rise to two daughter nuclei. b. the daught

In meiosis,
a. a single nucleus gives rise to two daughter nuclei.
b. the daughter nuclei are genetically identical to the parent nucleus.
c. the centromeres separate at the onset of anaphase I.
d. homologous chromosomes synapse i

arealhero   189   3 Replies

milestone23

In meiosis II, a. four genetically identical cells are generated. b. sister chro

In meiosis II, a. four genetically identical cells are generated. b. sister chro

In meiosis II,
a. four genetically identical cells are generated.
b. sister chromatids are separated.
c. DNA replication occurs.
d. crossing over occurs.
e. Both a and b

arealhero   189   3 Replies

milestone23

Suppose that a group of male pied flycatchers migrated from a region where there were no collared ...

Suppose that a group of male pied flycatchers migrated from a region where there were no collared ...

7. Suppose that a group of male pied flycatchers migrated from a region where there were no collared flycatchers to a region where both species were present Assuming events like this are very rare, which of the following scenarios is least likely?

bigsmile1k   189   2 Replies

bigsmile1k

Anencephaly, a fatal condition, results from the failure of the anterior end of the neural tube to ...

Anencephaly, a fatal condition, results from the failure of the anterior end of the neural tube to ...

Anencephaly, a fatal condition, results from the failure of the anterior end of the neural tube to close properly, causing failure of the forebrain to develop. Determine and discuss the germ layer involved in this defect.

Cali Fornia   189   2 Replies

Cali Fornia

In a circular DNA molecule of 126 bp with 10.5 bp/turn, which of the following represents an ...

In a circular DNA molecule of 126 bp with 10.5 bp/turn, which of the following represents an ...

In a circular DNA molecule of 126 bp with 10.5 bp/turn, which of the following represents an unstrained circle?  (L = linking number, T = twist and W = writhe)

A) L = 12, T = 12, W = 0
B) L = 11, T = 11, W = 0
C) L = 11, T =

bogdan   189   2 Replies

Anonymous