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3 years ago

What is the difference between metaphase in mitosis and metaphase I in meiosis? How are they the same?

1 answer:

7 0

The difference between is metaphase in mitosis has ‘pairs of chromosomes’, while metaphase in meiosis have ‘spindle fibers’. They are the same because metaphase 2 is found in meiosis 2. The metaphase 2 in mitosis, chromosomes are arranged on the metaphase plate and are attached to the completed spindle.

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In horses, black color(B) dominates chestnut color(b). The trotting gait(T) dominates the pacing gait (t). A cross is made betwe

bulgar [2K]

Answer:

<h2>a. BbTt;</h2><h2>b. BbTt X BbTt ;</h2><h2> Parent 1: BT bt Bt bT </h2><h2> Parent 2: BT bt Bt bT ;</h2><h2>c. BBTT , BbTt , BBTt , BbTT , BbTt , BbTt , BBTt , BbTT , BBTt , Bbtt , BBtt , BbTt , BbTT , bbTt , BbTt , bbTT.</h2><h2> d. 12:1:1:2</h2>

Explanation:

As given Block color is dominant over chesnut color, so B is dominant over b.

Chestnut color=bb ;

Trotting gait is dominant over pacing gait, so T is dominant over t .

Pacing gait=tt

Now; cross between

(a) homozygous black, pacing gait is= BBtt; and horse homozygous for chestnut color, trotting gait is= bbTT

BBtt x bbTT

gametes are ; Bt and bT,

Progeny are BbTt, BbTt,

All progeny will be BbTt heterozygous Black color and heterozygous trotting gait

b. a cross is made between two horses, both of who are heterozygous black trotter = BbTt X BbTt

Possible gametes of each parent are;

Parent 1: BT bt Bt bT

Parent 2: BT bt Bt bT

c. Punnett square and all the possible gene combinations that results are;

Cross between these gametes

BT bt Bt bT

possible gene combinations ; BBTT , BbTt , BBTt , BbTT , BbTt , BbTt , BBTt , BbTT , BBTt , Bbtt , BBtt , BbTt , BbTT , bbTt , BbTt , bbTT.

d. expected phenotype ration of the offspring.

Black color and trotting gait horse 12: chestnut and trotting gait horse 1: Black color pacing gait horse 1: chestnut and trotting gait horse 2.

so 12:1:1:2

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4 years ago

When 10,000 molecules of ATP are hydrolyzed to ADP and i in a test tube, about half as much heat is liberated as when a cell hyd

Korolek [52]

Answer:

C. Reactant and product concentrations in the test tube are different from those in the cell.

Explanation:

Cells convert some of the energy from ATP hydrolysis in to different forms of energy other than heat. ATP energy does not always generate more heat. Many times, energy is used for different purposes.

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4 years ago

Read 2 more answers

Meristic traits are characterized by having phenotypes that are described by ________. Meristic traits are characterized by havi

mrs_skeptik [129]

Answer:

whole numbers

Explanation:

Meristic traits are referred to as traits that are countable, hence the phenotypes are described by whole numbers instead of irrational, prime, complex or imaginary numbers. Meristics traits are usually associated with fishes, it is used to characterize different known species of fish or can also be employed in identifying unknown fish species. Meristic studies are mostly done on dead fishes than on living fishes

An example of a countable trait in fishes is the number of gill rakers. The identification of the number of gill rakers can be used in identifying the specie of fish.

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3 years ago

Describe weight reducing adaptation of birds

Novay_Z [31]

Answer:

Birds have a significant number of reduced muscles to help them reduce their weight. The most-developed muscles in birds are the flight muscles that they need to fly. The bones are mostly fused, reducing the need for muscles to hold the bones together. The skulls of birds are very thin and the beaks are very light.

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3 years ago

How do australian bearded lizards reproduce?

elena55 [62]

Answer:

Bearded dragons mating

The male will approach and circle the female. His beard will be darkened, and he will bob his head up and down. The female will respond by bobbing her head up and down and waving her arm in a circular motion. ... Sperm can be stored by the female within the breeding seasson.

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3 years ago