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Genetics

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Neoma Donnelly

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โˆ™ 2021-11-07 19:34:21
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Cards in this guide (30)
What is an allele

a form of a gene apex

How are some ways that crime scene investigators identify victims and criminals

The crime scene investigators use the biotechnology and genetis technology for solving their case. They collect every sample from the crime scene and perform the laboratory tests on it which gives them clue about what would have happened on the crime scene and then DNA and the fingerprints are used to prove the identity of the person associated with crime scene

What must happen before meiosis can begin

DNA doubles and produces sister chromatids before meiosis begins.

the chromosomes must replicate

What is a gamete

a sperm or egg cell produced by meiosis

What is the purpose of a punnet square

rffvvfwe

PCR stands for

PCR stands for Polymerase Chain Reaction.

What happens during S phase

DNA is replicated.

Chromosomes are duplicated.
During S Phase, there is the occurrence of DNA replication.

How can you explain the inheritance of sex-linked traits

Sex- linked traits are those where the genes are found on the X and Y chromosomes. Colorblindness and male pattern baldness are the most well-known sex-link traits.

Women have two X chromosomes. Men have one X and one Y, but the Y chromosome has fewer genes than the X. These differences help account for different patterns of inheritance than non-sex-linked traits.

Is color blindness a dominant or a recessive trait

Color blindness is a recessive sex linked trait.

What is the purpose of a punnett square

A Punnett Square is a diagram used by biologists and geneticists to analyze crossbreeding, i.e. to determine the probability of the possible types of offspring which would result from crossing parents of similar or different genotypes and phenotypes. It is used to show every type of combination possible when one or more maternal and paternal alleles interact, for each gene being studied in the cross.

Though not always accurate, this diagram also generally teaches students that are studying genetics how receiving one allele from two different parents does not always have a straightforward outcome. It shows students that there are a large number of possibilities when paternal and maternal alleles interact, especially when one or more parent has an unknown allele.

The inheritance pattern of a trait controlled by two or more genes is what

A polygenic inheritance pattern.

Why do more people have attached rather than unattached earlobes

Cause attached earlobes are the dominant trait. Unattached earlobes are reccessive.

Which is a reason cells divide

They divide so the can make NEW cells to replace the ones that died.

To reproduce

To replace damaged cells~

Why did Mendel study such a large sample of pea plants to determine the probability of inheritance

The more samples you use, the closer your results will match probability.

Why was mendels work not accepted at the time

because he had the things to

A scientist is preparing a punnett square for a dihybrid cross of a plant with a genotype of GGKk. What possible gametes can the plant produce

Gk, gk

Are restriction enzymes and restriction endonucleases the same thing

No restriction endonucleases is one of the examples for restriction enzymes.

Why do sex-linked traits follow different pattern of inheritance than other traits

males and females have different sex chromosomes

Why does sex linked traits follow different patterns of inheritance than other traits

Males and females have different sex chromosomes.

What best describes the the law of independent assortment

The factors for each trait are separated independently when sex cells form.

How did Mendel make the F1 generation for his experiment

he crossed two pure lines

How are meiosis and mitosis different

mitosis only has to do with celluar reproduction

meiosis has to do with sex cells reproducing
Mitosis creates new cells that are used for development, repair, asexual reproduction and growth. Meiosis creates cells in order for organisms to reproduce sexually.

A plant can have green (G) or yellow (g) leaves. It can also have a long (K) or short (k) stem. A scientist is preparing a Punnett square for a dihybrid cross of a plant with a genotype GGKk. What pos

Gk, gk

What is the probability that a father produces a gamete with the allele for attached earlobes if he has one allele for detached earlobes and one allele for attached earlobes

50%

Attached earlobes are a recessive trait in humans. In the tree below people with attached earlobes are shaded in. Which best describes the person labeled X in the tree

a female with one recessive allele (Apex)

The number of possible genetically different gamete for an organism quals 2n where n is the number of pairs of chromosomes if an organism has six pairs of chromosomes how man different gametes can it

64 - Apex

Which best describes probability

the likelihood that something will happen

Which is an example of incomplete dominance

(Apex Learning) A white cat and a black cat having grey kittens.

which best describes the result of mendels work with pea plants

(Apex Learning) He showed how traits are passed between generations.

A scientist uses material in her lab to separate dna fragments by size .what process is she using

Gel electrophoresis.

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