Which type of cell division does produce gametes?

Answers

Answer 1

Answer: The malehuman has a sperm cell and the female has an egg cell. The cells from the maleand female that combine to form a zygote are called gametes. The human spermand egg cells each contain 23 chromosomes. . A combination of gametes forms azygote with 46 chromosomes. The type of cell division that produces gameteswith half the normal chromosome number is the meiosis. Meiosis is the type ofcell division used in sexual reproduction. It will occur in the testes andovaries.

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The fungi that produce penicillin, the fungi that we use to make bread, the fungi that we use to brew alcoholic drinks, and the fungi that we eat as truffles, all belong to the group of fungi known as:___________.
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Which group of organelles is directly responsible for the production of new molecules within a cell

Answers

The correct answer for the question that is being presented above is this one: the group of organelles is directly responsible for the production of new molecules within a cell are the following:

Nucleus: production of RNA
Mitochondria: production of ATP
Ribosomes: production of proteins
Chloroplasts: production of simple sugars

A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has codominant alleles M and N. Which of the following is a possible phenotype for the father?
A) A negative
B) O negative
C) B positive
D) AB negative
E) impossible to determine

Answers

The answer is C) B positive.

A mother has either AA or AO genotype. Since her daughter has OO genotype, the one O allele is from a father and one is from the mother. Thus, mother must have allele O. So mother's genotype is AO.

A mother with AO genotype will pass to her son either A or O allele. Since son is type B negative, it could inherit from mother only O allele. Son's genotype is BO. This means that he inherited from the father B allele.

Father has either BO or BB genotype. Since his daughter has OO genotype, she must inherit one O allele from the father. Thus, the father has BO genotype.

Talking of Rh, her son is type B negative. A negative Rh phenotype contains both recessive alleles r, so the mother must have allele r (she is either Rh+ heterozygous, or Rh- homozygous). The same is with father - he is either Rh+ heterozygous, or Rh- homozygous.

These waste items should always be discarded in the hazardous waste container. Which of the following are these?A. pieces of glass
B. plant specimens
C. all chemicals
D. bacterial cultures

Answers

The one that should always be discarded in the hazardous waste container is : D. Bacterial cultures
It could potentially caused several illness if it came into contact with other organisms

hope this helps

Bacterial cultures is the correct answer

What can directly lead to unconformity on an exposed rock?A. Uplift
B. Uneven rock layers
C. Climate change
D. Erosion

Answers

I'm pretty sure its B.

A high birth to death ratio leads to smaller populations. Please select the best answer from the choices provideda. True
b. False

Answers

False, a high birth to death ratio do not lead to smaller populations. High birth to death ratio means that more children are born each time than people dying. Therefore, population is increasing. It does not lead to smaller population rather younger population.

A high birth-to-death ratio leads to larger populations. This is because the birth rate is the number of births per 1,000 people in a population, and the death rate is the number of deaths per 1,000 people in a population. Hence the statement is false.

If the birth rate is higher than the death rate, then the population will grow. On the other hand, a low birth-to-death ratio leads to smaller populations. This is because the birth rate is lower than the death rate, so the population will shrink.

Therefore, the statement "A high birth-to-death ratio leads to larger populations, not smaller populations." is False.

To know more aboutthe birth rate:

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Light alerts the biological clock to slow down the secretion of which hormone that promotes sleep

Answers

Light alerts the biological clock to slow down the secretion of melatonin hormone that promotes sleep. Melatonin hormone is a hormone that is produced by the pineal gland in animals and regulates sleep and wakefulness. . The hormone is used to regulate night and day cycles or sleep-wake cycles, darkness causes the body to produce more melatonin, which signals the body to prepare for sleep. Light decreases melatonin production and signals the body to prepare being awake.

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