1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
solong [7]
3 years ago
13

The passing of __________________ is the basis of heredity. 2. our ________________ encode the instructions that define our trai

ts. 3. each of us has thousands of genes, which are made of _______ and reside in our chromosomes. 4. in addition to our genes, the _________________ we live in also helps define our traits. 5. humans have two complete sets of _________ chromosomes. 6. when parents conceive a child, each parent contributes ____________ set of chromosomes. 7. every child receives _______ of its chromosomes from the mother and half from the father. 8. this transfer takes place at ______________, when the father's sperm joins the mother's egg. 9. while most cells in our bodies have two sets of chromosomes, or a total of ______________, egg and sperm each have _________ chromosomes.
Biology
1 answer:
cluponka [151]3 years ago
5 0
1. The passing of traits from parents to the offsprings (children) is the basis of heredity. Traits are notable features or qualities in a person, such that each individual has a different combination of traits that makes us unique from others. They are inherited from our parents and passed from generation to generation. That is to our children, then our children to their children and so on.

2. Our genes encode the instructions that define our traits. Traits are majorly defined by the instructions encoded in the genes. However, environment may influences the traits and may play an important role in shaping the traits we posses. Often times these traits may be changed by the environmental factors.

3. Each of us has thousands of genes, which are made of DNA molecules and reside in our chromosomes. Genes are functional or fundamental units of heredity. They are made up of DNA molecules, and act as instructions to make proteins, through a process of transcription and translation. Transcription involves formation of a messenger RNA which then undergoes translation in the cytoplasm to make proteins.The protein formed determine the traits of an individual.

4. In addition to our genes, the Environment we live in also helps define our traits. The expression of genes in organisms may be influenced by environmental factors, these includes the external factors where the organism lives or develops, and also the internal factors such as its hormones and metabolism.

5. Human have two complete sets of 23 chromosomes.  A human being has a total of 46 chromosomes (23×2 = 46). This is referred to as a diploid number (2n). Each set is considered to be a one homologous chromosome set. This is the case of of the somatic cells or the body cells which represents a diploid number of chromosomes.

6. When parents conceive a child, each parent contributes one set of chromosomes.This enhances the passing of traits or genes to the child. The egg cell or the ovum from the mother and the sperm cell from the father contain the haploid number (n) or one set of chromosome. During conception the two combines/fuse to form a zygote which is now diploid (2n).

7. Every child receives half of its chromosomes from the mother and another half from the father. During meiosis in the gametes for both mother and father a haploid cell is formed with one set of chromosomes (haploid, n). Therefore, each child contains half number of chromosomes from the mother and the other half from the father making up the diploid number (2n).

8. This transfer takes place at conception, when the father's sperm joins the mother's egg. During conception, fertilization takes place and the sperm cell fuses with the mother cell (ovum) forming a single cell called Zygote. The zygote has the two sets of chromosomes (23 +23 = 46). The cells then divide by mitosis leading to the development of a child.

9. While most cells in our bodies have two sets of chromosomes, or a total of 46 chromosomes, egg and sperm each have 23 chromosomes. The body cells (somatic cells) contain two sets of chromosomes (diploid number, 2n) from mitosis, while the gametes have a single set of chromosomes (haploid, n), from meiosis.
You might be interested in
What is meant by chewing the cub?​
MatroZZZ [7]

informalif you chew the cud, you spend a long time thinking or talking about something. Synonyms and related words. To think carefully or a lot about things.

5 0
2 years ago
Read 2 more answers
Mendel crossed plants that produced only round seeds to those that produced only wrinkled seeds. In the next generation, all the
Artist 52 [7]

Answer:

Dominance

Explanation:

Mendel discovered certain principles that governs heredity or inheritance when he conducted experiments. In his experiments, he discovered that an organism receives two copies of a gene called allele, from each parent.

He discovered that one allele of a gene has the ability to mask or suppress the expression of its allele variant in the same gene. He called the allele that masks or is expressed, DOMINANT allele, while the allele that is masked, RECESSIVE allele. Based on this observation, he named his first principle, LAW OF DOMINANCE.

In this case, he crossed a purebreeding round-seeded pea plant and a purebreeding wrinkled-seeded pea plant, he noticed that in the F1 generation, all the offsprings possessed round seeds. This led to the conclusion that the allele for round seeds masks the phenotypic expression of the wrinkled allele in a heterozygous state. Hence, the allele for round seeds is dominant while the allele for Wrinkled seeds is recessive.

4 0
3 years ago
8 In sexual reproduction, an offspring is produced with genes from both parents. When the offspring has a new genetic variation
KatRina [158]

Answer: B

Explanation:

Mutations are changes in the DNA sequence that can lead to genetic diversity. Mutations are usually errors in DNA replication or mitosis.

8 0
2 years ago
Which of the following is a function of the motor division of the nervous system? A) providing sensation of the internal and ext
Fofino [41]

Answer:

The answer is D.

Explanation:

Among the given options in the question, the fitting function for the motor division of the nervous system is sending signals to muscles. The nervous systems' motor division is used to control muscles, organs and excretions of glands in the body. The functions described in the other option are for the somatic division of the nervous system. So the answer is D.

I hope this answer helps.

8 0
3 years ago
Describe the three main properties that scientists measure when they study populations
mars1129 [50]
Size, density, and growth rate are the three main ones. There is also dispersion, age structure, and survivorship. Hope this helps!
8 0
3 years ago
Other questions:
  • At the end of meiosis 2, each of the haploid sex cells has only half the number of chromosomes as the original diploid cell. Why
    8·1 answer
  • What are the components of Adenosine Triphosphate (ATP)
    6·1 answer
  • Suppose you throw a cube-shaped object and a spherical-shaped object of equal volume in the same volume of water. The ball sinks
    7·1 answer
  • Which occurs during translation?
    14·2 answers
  • In humans, DNA segments condense into 46 large structures called
    5·1 answer
  • PLEASE HELP EMERGENCY!! IF YOU ARE NOT 100% SURE ABOUT YOUR ANSWER DO NOT ANSWER THEN!! PLEASE!!
    7·2 answers
  • 32 POINTS!!
    8·1 answer
  • PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!
    10·2 answers
  • What do you mean by Zero population growth?
    7·1 answer
  • Which type of cell has: cell membrane, cytoplasm, genetic material, but no membrane bound organelles?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!