Biology - April 2007

likely to happen?
a. The gametes produced would accumulate lethal mutations, so the organism would be sterile.
b. The gametes would have fewer chromosomes than usual.
c. The gametes would have lower genetic variability than usual.
d. No gametes would be produced.
e. There would be no effect; the gametes would be the same as in a normal organism.

2007-04-25 14:39:36 · 3 answers · asked by Daved H 1

a. True for mitosis only.
b. True for meiosis 1 only.
c. True for meiosis 2 only.
d. True for mitosis and meiosis 1.
e. True for mitosis and meiosis 2.

2007-04-25 14:35:19 · 3 answers · asked by Daved H 1

equivalent structures that are found in related species.


present but have no apparent function.


found only in whales and humans.


common in related species.

2007-04-25 14:34:27 · 4 answers · asked by americanidolgivesback 1

a dog's tail and earthworm's body


a person's fingers and a cat's claws


a person's arm and a whale's flipper


a person's arm and the branch of a tree.

2007-04-25 14:33:13 · 2 answers · asked by americanidolgivesback 1

2007-04-25 14:32:11 · 4 answers · asked by Richard C 1

2007-04-25 14:30:24 · 3 answers · asked by Alyssa R 1

a. G2 phase
b. Cytophase
c. Cytokinesis
d. Spindle apparatus formation
e. Interphase

2007-04-25 14:28:33 · 4 answers · asked by Daved H 1

a. 46 pairs of chromosomes
b. 44 pairs of chromosomes
c. 23 unpaired chromosomes
d. 22 pairs of chromosomes
e. 23 pairs of chromosomes

2007-04-25 14:25:26 · 5 answers · asked by Daved H 1

In an organism, two separate genes influence the length of the hair. The allele for long hair, L, dominates teh allele for short hair, l. The allele for hair, H, dominates the hairless allele, h. In the cross between parents of genotype LlHh and llHh, what ratio of phenotypes would you expect to see?


8 long haired; 8 short haired.

4 long haired; 3 short haired; 1 no hair

9 long haired; 3 short haired; 4 no hair

3 long haired; 3 short haired; 2 no hair

2007-04-25 14:07:56 · 1 answers · asked by americanidolgivesback 1

-are possible in teh gamestes owing only to independent assortment?

a. 2
b. 4
c. 8
d. 16
e. 32

2007-04-25 14:06:43 · 1 answers · asked by Anonymous

1.living things composed of only one cell
2.tissue that carries messages throughout our bodies
3.organ system that breaks down food and absorbs nutrients
4.living things composed of more than one cell
5.system that removes solid and liquid wastes

2007-04-25 14:03:58 · 4 answers · asked by Anonymous

the ability to roll one's tongue is a dominant trait. Jane and Allen are both heterozygous for the trait. What are the chances that their first child will be a boy who can roll his tongue?


4/4

3/4

3/8

1/8

2007-04-25 14:03:52 · 4 answers · asked by americanidolgivesback 1

how much DNA does a polyp get from its dad?
Also how much dna does a medusa get from the polyp hydroid colony in asexual reproduction?
Plz i really need to know today!!!

2007-04-25 14:00:26 · 1 answers · asked by death 1

What body system do you think is the most important? and why?

2007-04-25 13:41:50 · 5 answers · asked by VanessaRose 1

How do body systems depend on each other?

2007-04-25 13:39:39 · 1 answers · asked by VanessaRose 1

A woman with brown eyes carries the blue-eyed allele. If she has children with a blue-eyed man, what is the probability that their offspring will have blue eyes?


1/4

1/2

3/4

1

2007-04-25 13:38:42 · 3 answers · asked by Anonymous

getting tails on the fourth toss?


1

3/4

1/2

0

2007-04-25 13:37:07 · 4 answers · asked by Anonymous

Crossing an individual who is homozygous dominant for a trait with an individual whose genotype is unknown will most likely produce which set of offspring?


100% dominant phenotype.


75% dominant phenotype, 25% recessive phenotype.


50% dominant phenotype, 50% recessive phenotype.


100% dominant genotype.

2007-04-25 13:31:15 · 4 answers · asked by Anonymous

Most reptiles do not care for their young, but some crocodiles do.

2007-04-25 13:31:10 · 2 answers · asked by Bijou 2

What is responsible for the fatal reaction that occurs when type A blood is given to an individual that has type B blood.


Antibodies from the type B blood attack the antigen in the type A blood.


The antigens in the type A blood attack the type B blood.


The blood types mix to form type AB blood with both A and B antigens.


No reaction occurs, blood type A is the universal donor.

2007-04-25 13:23:07 · 5 answers · asked by whatsinaname07 1

a. Environment
b.Genotype
C. Phenotype
d. Genetic code
e.number chromosomes

2007-04-25 13:22:00 · 4 answers · asked by Anonymous

alleles do not segregate from one another.


Codominance contradicts Mendelian Inheritance.


The intermediate phenotype is a blending of the two alleles.


Both alleles of a heterozygote are distinctly expressed.

2007-04-25 13:20:15 · 1 answers · asked by whatsinaname07 1

A red snapdragon is crossed with a white snapdragon. All the offspring are pink. The pink snapdragons are allowed to self-pollinate. What percentage of the F2 generation will be pink?


100, 75, 50, or 25%

2007-04-25 13:17:31 · 6 answers · asked by whatsinaname07 1

2007-04-25 13:14:52 · 3 answers · asked by whatsinaname07 1

Natural factors

Competing factors

Ecological factors

Limiting factors

2007-04-25 12:53:04 · 2 answers · asked by Alyssa R 1

2007-04-25 12:46:37 · 1 answers · asked by Dion 2

I need to use the following terms also:

Ozone layer, endosymbiosis, Photosynthesis, Prokaryotic cells, Eukaryotic cells, Aerobic organisms, organic molecules, and Archaebacteria. Please help!!

2007-04-25 12:06:26 · 3 answers · asked by Cloud Strife 1

2007-04-25 11:23:21 · 2 answers · asked by Anonymous

A truly reliable scientific theory must meet the following criteria :

1. thoroughly testable,
2. scientifically falsifiable, and
3. makes accurate predictions.

How many of these criteria does macroevolution (not to be confused with microevolution) meet?

2007-04-25 11:19:22 · 3 answers · asked by flandargo 5

There is basically no evidence today for macro-evolution. A bird hasn't become a dog...etc. Now dogs do change from one type of dog to another but that is inside its kind. (micro-evolution) There is also no examples today of changes in genes that involve the gain of information. We have mutations but that is the loss of information. How can someone blindly follow the theory of evolution when so many things are against it?

2007-04-25 10:43:11 · 11 answers · asked by Anonymous