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2 years ago

How would you know whether it was in metaphase i and metaphase ii.

1 answer:

7 0

Metaphase 1 is associated with meiosis 1 whereas the metaphase 2 is associated with meiosis 2. The main difference between metaphase 1 and 2 is that chromosomes are attached as homologous pairs at the equator during the metaphase 1 and during metaphase 2, single chromosomes are attached at the equator

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Why do we have to get the flu shot every year ?

SOVA2 [1]

Answer:

Because flu viruses evolve so quickly, last year's vaccine may not protect you from this year's viruses. New flu vaccines are released every year to keep up with rapidly adapting flu viruses.

4 0

3 years ago

What two chromosomes do males have for gender

mojhsa [17]

Males have two different chromosome that determine their sex: X and Y

Females have two of the same chromosome which determines their sex: X and X

Chromosomes carry genetic information, and they are called X and Y because that's just just what they look like coincidentally. Look it up! It's pretty interesting.

7 0

4 years ago

Read 2 more answers

What intravenous anesthetic administered by the anesthesiologist has a powerful respiratory depressant effect sufficient to caus

mafiozo [28]

Answer:

Thiopental sodium.

Explanation:

Anesthesia may be defined as the state of the loss of temporary sensation that are generally done by the use of chemicals. This is mainly done for the surgical procedure.

Thiopental sodium is the general anesthesia and considered as the most safe anesthesia that can be given to the patients. The Thiopental sodium is given intravenously and cause the loss of sensation within 30 to 45 minutes after the injection. This anesthesia is a high depressant and moves from the brain to the different part of body to cause consciousness.

Thus, the answer is Thiopental sodium.

7 0

3 years ago

Can someone answer this?

polet [3.4K]

1a. The parent is homozygote dominant and homozygote recessive where red(R) is the dominant trait and white(r) is the recessive trait. The genotype of the parents should be:

homozygote dominant= RR

homozygote recessive= rr

1b. To find the possible offspring, you need to know the possible gametes from each parent and make a punnet square with it.

possible gamete= 100% R

possible gamete= 100% r

punnet square of the offspring:

r Rr

The answer is 100% Rr

1c. Red flower is a phenotype. This because red is dominant, phenotype will be expressed when the gene is homozygote dominant or heterozygote. The offspring from the cross is 100% heterozygote, so the chance for red flower would be 100% too.

1d. White flower is a phenotype. This because white is recessive, phenotype will be expressed when the gene is homozygote recessive only. The offspring from the cross is 100% heterozygote which mean 0% chance for homozygote recessive. So the chance for white flower would be 0%.

2.
The purple stem(P) is dominant of green stem(p) and red fruit(R) is dominant over yellow fruit(r).
Both parents for the crossing is heterozygote for both traits, so the phenotype and genotype would be green stem and yellow fruit(Pp Rr)

PpRr possible gamete: PR, Pr, pR, pr
The punnet square should be 4x4 with the possible gamete above. It is hard to draw in here but the phenotype should be at 9:3:3:1 ratio

3a. Brown allele is dominant to all other traits. That means you need at least 1 brown allele to make the cat has brown eyes phenotype. The possible phenotype would be:
$C^{W}$ $C^{W}$
$C^{W}$ $C^{N}$
$C^{W}$ $C^{Y}$
$C^{W}$ $C^{B}$
The total is 4 possible genotype

3b. The grey allele is dominant to blue, but recessive to brown and green. Grey eye phenotype would need at least one grey allele, without the brown or green allele. The possible genotype would be:
$C^{Y}$ $C^{Y}$
$C^{Y}$ $C^{B}$
The total is 2 possible genotype

3c. Green eye cat will need at least green allele without brown allele. The punnet square should be:

W Y
N WN YN
Y WY YY
The phenotype of the offspring is WN(brown), WY(brown), YN(green), YY(grey). So, the chance for green eye would be 1/4 = 25%

8 0

4 years ago

The ability of an ecosystem to support life declines sharply after a population crash

Elodia [21]

Answer:

Explanation: all other traits are irrelevant and could reply to any part o the food chain, c means that the plats have dropped, meaning that the things that eat the plants wot be able to eat the plants, (primary consumers)and the secondary consumers wont be able to eat the primary consumers,then the tertiary consumers wont be able to eat the secondary consumers. In simpler terms it would cause a chain reaction that would detonate the whole foodchain.

6 0

3 years ago