BIOLOGY HIGH SCHOOL

1.0 mL of water has a mass of 1.0 g when frozen 1.0 mL of water expands into a1.1 cm^3 piece of ice what is the density of the ice

Answers

Answer 1
Answer:

Explanation:

Density=

\: density = (mass)/(volume)

= (1)/(1.1) \n = 0.91 {gcm}^( - 3)

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Because of its size, messenger RNA (mRNA) is able to exit the nucleus through nuclear pores andenter the cytoplasm where ribosomes are located true or false.​

Answers

Answer:

true

Explanation:

What type of molecule is this strand? UCGAUAAUUGCUUGCAGU

Answers

The strand UCGAUAAUUGCUUGCAGU is an RNA molecule.

Which main change can happen in a small population that is the direct result of genetic drift? (Points : 3) Large changes in allele frequencies can occur in a short time. The Hardy-Weinberg equilibrium will not equal 1. Recessive traits always become dominant. New individuals add their genes to the gene pool.

Answers

Genetic drift is the variation in different genotypes in a small population due to certain events that produce a large change in population, such as organisms dying out. The result of this genetic drift is that large changes in allele frequencies can occur in a short time.

Answer: New individuals add their genes to the gene pool.

Genetic drift is a natural phenomena which supports evolution in this the allele frequencies of a population changes over generation.It occurs in all populations but the effect is more prominent in small populations. The selection of allele from the gene pool to be transferred to the next generation is a chance event. Genetic drift occurs when a few number of individuals establish a population. Therefore, new individuals add their genes to the gene pool is the main change that can happen in a small population that is the direct result of genetic drift.

What is the purpose of dna replication

Answers

the purpose of dna replication is to ensure continuity of hereditary traits 

Which two species of trout are most closely related

Answers

Answer:

     Trout is a freshwater fish found all over the world.Salmonidae is the only family of actinopterite fish belonging to the order Salmoniformes. Salmon and trout of the genus Salmo name this family and its order. Salvelinus fontinalis and Cynoscion nebulosus are examples of related trout by this family.

   

Spotted trout and Speckled trout are closely related

Which of the following shows a reduction of chromosomes by half? Male gametophyte to flagellated sperm
Sporophyte to spores
Male gametophyte to spores
Female gametophyte to zygote

Answers

"Sporophyte to spores" is the one among the following choices given in the question that shows a reduction of chromosomes by half. The correct option among all the options that are given in the question is the second option. I hope that this is the answer that has actually come to your desired help.

Answer: The correct answer is-  

A sporophyte can be described as the multicellular, diploid phase in the life cycle of plants and alga.

It is the dominant phase in higher plants ( such as angiosperms and gymnosperms) and undergoes alternation of generation with a haploid, gametophyte phase.

Sporophyte produces haploid spores ( having half the number of chromosome as their diploid parent cell) by a process of cell division called meiosis ( also termed as reductional cell division)

The spores fuse to form a dipolid zygote that undergoes mitotic division to produce the sporophyte again.

On the contrary, male and female gametophyte are already haploid.

Thus, second option is the right answer.
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