BIOLOGY HIGH SCHOOL

Differences between DNA and RNA include which of the following? (1) RNA consists of one nucleotidechain. (2) RNA contains the nitrogen base uracil instead of thymine. (3) RNA contains the sugar ribose
instead of deoxyribose.
a. 1, 2, and 3
b. 1 and 2
c. 2 and 3
d. 2 only

Answers

Answer 1
Answer: A is the correct answer.
Answer 2
Answer:

Answer:

i think it's A

Explanation:

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Can someone explain to me what chromosomes are, and also explain briefly and understandably grade 10/ 10th grade biology term 1 with genetics and stuff? Thanks heaps if you can :D

Answers

Chromosomes are what the mother and father donate to the fetus in order to compose your basic genetics

The father gives half which is 25 and the mother gives 23


The reason for this is when a baby is being created it is given a gender. That gender is either boy or girl the boy has an added chromosome at the near middle of gestation and the girl lacks that last chromosome so thats why the father gives more chromosomes than the mother
Chromosomes are what the mother and father donate to the fetus in order to compose your basic genetics 

The father gives half which is 25 and the mother gives 23 


The reason for this is when a baby is being created it is given a gender. That gender is either boy or girl the boy has an added chromosome at the near middle of gestation and the girl lacks that last chromosome so thats why the father gives more chromosomes than the mother.

Hope this helps.

Several features of Gregor Mendel's experiments on plant breeding and patterns of inheritance distinguished his work from that of his contemporaries. Which of the following was a critical experimental innovation employed by Mendel that distinguished his experiments from those of his contemporaries?A. Mendel used self-fertilizing wild strains in his experiments.B. Mendel restricted his observations to the first-generation progeny from his crosses. C. Mendel performed controlled crosses with pure-breeding strains. D. Mendel used strains that displayed a broad range of phenotypes for each trait.

Answers

The correct answer is: C.

Explanation:

  • Gregor Mendel identified the manner in which different traits are transferred from the parents to their offspring.
  • He explained the three Laws which determines the pattern of inheritance by examining the some traits of pea plant in the parental and offspring generation.
  • The traits includes, seed colour seed shape, pod colour, etc.
  • The parent pea plants which Mendel experimented with belonged to the pure-breeding strains.
  • This means that the parent pea plants were homozygous (either dominant or recessive) and not heterozygous for the different traits which Mendel observed.
  • This is why Mendel could determine the pattern of inheritance of the traits in different generations of the offspring.
  • The three laws of inheritance as explained by Mendel were,
  1. The Law of Dominance. It states that in a diploid organism, each trait is controlled by two contrasting variants of the same gene called Alleles. Among the two variants one can express itself even in the presence of the other variant (heterozygous condition) and is called the Dominant allele. The other variant gets suppressed in the presence of the dominant allele and can express itself only in the homozygous condition. This is the Recessive allele.
  2. The Law of Segregation. It states that different pair of alleles segregate during the formation of gametes and during the process of fertilization they associate with the corresponding allele, obtained from the other parent, randomly.
  3. The Law of Independent Assortment. It states that during gamete formation, alleles of two different genes get randomly sorted in the gametes independent of each other.

A growth defect in cells

Answers

in a cell means that there is a problem with the cell so you should not go near one of these because they can harm you and spread harmful bacteria all over your body and everyone and everything you touch.

A dog Gave birth to four puppies. the father has brown eyes, and the mother has grren eyes. Two puppies have brown eyes. one has green eyes. one puppy has blue eyes.what does this tell you about how cellular information for eye color is passed on.?? please explane
:/

Answers

A puppy with blue eye, resulted from the brown and green eyed parents because there are two different genes for eye color.

There are two genes that are responsible for the eye color of the child. One is Green and another is Brown, both are dominant. This allows both of them to become carrier of the blue eye recessive allele.

Brown eye color (B) - Dominant

Green eye color (G) - Dominant

Blue eye colored (b) - recessive

Both mother and father will be heterozygous hence a child is resulted in the blue eyed puppy.

The Punnett's square is attached.

Therefore, a puppy with blue eye, resulted from the brown and green eyed parents because there are two different genes for eye color.

To know more about eye color inheritance,

brainly.com/question/10255313
This means that the mothers green eyes are recessive alleles and the fathers brown eyes are dominant alleles. The blue eyed puppy is blue eyed because there must have been a gene in the mothers or fathers past generation.

A) ChromosomeB) DNA nucleotide
C) Codon
D) Gene
Place the components in order, from smallest to largest.
A) A0B0D0C
B) B0C0D0A
C) C0D0B0A
D) D0C0B0A

Answers

since gene has multiple codons 
and codon has 3 sequence of nucleotides, 

The smallest would be a DNA nucleotide , then a codon, then a gene and finally a chromosome!

so the answer is B

Which of the following statements is false? A) A single gene can only influence a single trait.
B) The number of chromosomes is different in different organisms.
C) There are more genes in a cell than there are chromosomes.
D) The karyotypes for a male human and a female human look different.

Answers

Answer:

A) A single gene can only influence a single trait

Explanation:

One gene has the possibility of influencing many traits and in the same manner, multiple genes can affect a single trait.
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