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Inheritance And Variation Of Traits

Inheritance And Variation Of Traits - Biology Questions asked by Filo students

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What is the diploid number of chromosomes in human cells? (See the "Mendels Law" notes) 46 chromasomes . Garden pea plants reproduce s Both male and female gametes are in the same

f

The male gamete is the

P

whereas the female gamete is in the 0 . (See poge 286 What is fertilization?

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2. In some dogs black fur is dominant over brown. If two black dogs are crossed and they have five black puppies and two brown puppies. What are the genotypes of the parents? is it possible to determine all of the genotypes of all the offspring? If so, what are they and if not, what are the possibilities? ( 5 pts.)

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3. A mother and father with normal color vision produce five male children, two of whom exhibit red-green colorblindness (a sex-linked condition). Their three female children exhibit normal color vision. What are the possible genotypes of the parents and children? ( 5 pts.)

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5 corm Playes (Connector

x

Pre-job briefings have which of the following benefits?

Improve job planning
All choices are correct
Teach employees to identify necessary safety precautions
Encourage communication between all individuals involved in the job

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Inheritance and Variation of Traits

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2. Can you try to buy products with less packaging so there is less trash? 3. Do you recyde?

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Trait: Falconi anemia Forms of the trait: The dominant form is normal bone marrow function - in other words, no anemia. The recessive form is Falconi anemia. Individuals affected show slow growth, heart defects, possible bone marrow failure and a high rate of leukemia. A typical pedigree for a family that carries Falconi anemia. Note that carriers are not indicated with half-colored shapes in this chart. Christopher To answer questions \#1-5, use the letter " " to indicate the recessive Falconi anemia allele, and the letter "F" for the normal allele.

What is Arlene's genotype?
What is George's genotype?
What are Ann \& Michael's genotypes?
Most likely, Sandra's genotype is
List three people from the chart (other than George) who are most likely carriers of Falconi anemia.

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(first 30 ) 1) Which one of the following is false? A) The hybrid offspring of an

F_{1}

F_{2}

generation. B) The hybrid offspring of a cross are the

P_{1}

generation. D) Hybridization is also called a cross. E) The offspral plants of a cross are the P generation. 2) Alleles of a gene are found at A) different loci on homologous B) the same locus on homologous C) the same locus on heterologous D) the same locus on homologous mitochondrial E) different loci on heterologous 3) Assuming that the probability of having a female child is

50%

50%

, what is the probability that a couple's first-born child is female A)

50%

75%

100%

25%

E) None of the choices are correct. carrier of a genetic disorder who does not show symptoms is ffspring.

heterozygous for the trait and able

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Problem \#2 In sheep, white wool (W) is dominant over black wool (w). What genotype and phenotype ratios are expected from a cross between a heterozygous sheep with white wool and a sheep with black wool? Copyright 2021 (5) Lincoln Learning Solutions. All rights reserved.

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Inheritance and Variation of Traits

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1. Homologous chromosomes are often confused with sister chromatids. Which analogy best describes the relationship between homologous chromosomes and chromatids?

Homologous chromosomes are to chromatids as blueprints are to architect.
Homologous chromosomes are to chromatids as pages are to a book.
Homologous chromosomes are to chromatids as brother is to sister.
Homologous chromosomes are to chromatids as shoes are to socks.

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Question 10

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7. The life cycle of an opossum is most similar to which organism?

human
grasshopper
kangaroo
catfish

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Inheritance and Variation of Traits

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Question 11

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You are looking at a group of lizards and are trying to describe their changes in traits over time.

How might the Lizards in this group vary?
What are traits in regards to this group?
What might be advantageous traits, if these lizards eat insects?
How might this group of lizards display natural selection based on your answers above?

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Question 12

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Problem \#4 What are the genotype and phenotype ratios of the potential offspring when a man who is heterozygous for type A blood marries a woman who has type B blood and whose mother had type O blood? P

x

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Question 13

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Problem \#1 In pea plants, round seeds, (R), are dominant to wrinkled, (r), and yellow seeds,

(Y)

, are dominant to green, (y). a. What phenotypic and genotypic ratios would be expected from the F1 cross of a wrinkled, homozygous yellow plant with a homozygous round, green plant?

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Question 14

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- Parental cross - this will be filled in as P_

x

In the blanks, please provide the genotypes of each parent. each question.) cat, frog, anole, and fish. - Phenotypic ratio - include the ratios of the offspring's phenotypes. The same rule holds true about units accompanying numbers for these ratios. - Explanation - this would be a detailed explanation, in complete sentence form. Correct spelling and proper grammar are expected.

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Question 15

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Human Blood Types Red blood cells carry antigens, molecules that can trigger an immune reaction, on their surfaces. Human blood type A carries an A antigen, type B has a B antigen, type AB has both antigens, and type

O

carries neither antigen. The gene for these antigens has three alleles:

A

B

O

. For a blood transfusion to succeed, it must not introduce a new antigen into the body of the recipient. So, a person with type A blood may receive type O, but not vice versa.

X =

Unsuccessful transfusion

\overline{=}

= Successful transfusion

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Question 16

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1. Cross between a

X^{- 4} Y

X^{-} X^{-}, A =

a = Bald

2. A normal woman is a carrier for color blindness, she mates a colorblind man What is the outcome?

B =

b =

color blind 3. A normal male mates with a color blind female.

B =

b =

color blind 4. A woman who has hemophilia marries a normal man. What is the outcome of their children? A = normal blood clotting, a = hemophilia 5. A woman who is a carrier for hemophilia marries a hemophiliac man. What is the outcome of their children? 6. If a woman with blood type

O

marries a man with heterozygous blood type

A

, What are the possible blood types of the children?

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Inheritance and Variation of Traits

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Question 17

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parts to the assembly line, tRNA delivers the amino acids to the ribosome DNA: The Molecule of Heredity 13. Which DNA strand can base pair with this DNA strand A-T-G-C-

T-A-C-G-A-T
U-A-C-G-A-U
A-T-G-C-T-A
A-U-G-C-U-A

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Inheritance and Variation of Traits

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Question 18

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Endocrine System 94. Which area of the brain receives messages from other areas of the brain and from internal organs?

cerebellum
cerebrum
thalamus
Hypothalamus

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Question 19

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The releasing of hormones directly affect the

pituitary gland
thyroid gland
adrenal gland
parathyroid gland

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Question 20

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Epinephrine and norepinephrine are produced by the

pituitary
pancreas
adrenal cortex
adrenal medulla

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Inheritance and Variation of Traits

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